Area Code 203 — Hartford, Stamford, Bloomfield, Connecticut
ActiveData last updated: June 25, 2026
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | 338 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | 61 |
| NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | 52 |
| OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | 47 |
| LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | 41 |
| PAETEC ITEL, LLC | 829J | 40 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | 7230 | 37 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CT | 7143 | 33 |
| CABLEVISION LIGHTPATH, INC. - CT | 4950 | 30 |
| METROPCS, INC. | 5562 | 25 |
Rate Centers
NEW HAVEN
DARIEN
GREENWICH
GUILFORD
DANBURY
WATERBURY
BRANFORD
BRIDGEPORT
WILTON
MERIDEN
WESTPORT
STAMFORD
TRUMBULL
HUNTINGTON
NORWALK
ANSONIDRBY
RIDGEFIELD
MADISON
CHESHIRE
FAIRFIELD
WOODBURY
WALLINGFD
NEWTOWN
OLDGRNWICH
MILFORD
NEW CANAAN
BYRAM
REDDING
WOLCOTT
SEYMOUR
XXXXXXXXXX
NAUGATUCK
GEORGETOWN
Exchange Listings (NXX)
| NPA-NXX | Carrier | Rate Center | Type | LATA | Status |
|---|---|---|---|---|---|
| 203-200 | BANDWIDTH.COM CLEC, LLC - CT | NEW HAVEN | VoIP | 920 | active |
| 203-201 | SPOK, INC. | NEW HAVEN | Landline | 920 | active |
| 203-202 | CABLEVISION LIGHTPATH, INC. - CT | DARIEN | Landline | 920 | active |
| 203-203 | ONVOY, LLC - CT | GREENWICH | Landline | 132 | active |
| 203-204 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | GUILFORD | Landline | 920 | active |
| 203-205 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-206 | NEW CINGULAR WIRELESS PCS, LLC - DC | WATERBURY | Wireless | 920 | active |
| 203-207 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-208 | COMCAST IP PHONE, LLC | BRANFORD | VoIP | 920 | active |
| 203-209 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-210 | CABLEVISION LIGHTPATH, INC. - CT | WILTON | Landline | 920 | active |
| 203-212 | NEW CINGULAR WIRELESS PCS, LLC - DC | BRIDGEPORT | Wireless | 920 | active |
| 203-213 | NEW CINGULAR WIRELESS PCS, LLC - DC | MERIDEN | Wireless | 920 | active |
| 203-214 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-215 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-216 | NEW CINGULAR WIRELESS PCS, LLC - DC | WESTPORT | Wireless | 920 | active |
| 203-217 | NEW CINGULAR WIRELESS PCS, LLC - DC | WATERBURY | Wireless | 920 | active |
| 203-218 | NEW CINGULAR WIRELESS PCS, LLC - DC | BRIDGEPORT | Wireless | 920 | active |
| 203-219 | NEW CINGULAR WIRELESS PCS, LLC - DC | STAMFORD | Wireless | 920 | active |
| 203-220 | CABLEVISION LIGHTPATH, INC. - CT | TRUMBULL | Landline | 920 | active |
| 203-221 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WESTPORT | Landline | 920 | active |
| 203-222 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WESTPORT | Landline | 920 | active |
| 203-223 | OMNIPOINT COMMUNICATIONS, INC. - CT | STAMFORD | Wireless | 920 | active |
| 203-224 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-225 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | HUNTINGTON | Landline | 920 | active |
| 203-226 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WESTPORT | Landline | 920 | active |
| 203-227 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WESTPORT | Landline | 920 | active |
| 203-228 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | WATERBURY | Wireless | 920 | active |
| 203-229 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-230 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-231 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | ANSONIDRBY | Wireless | 920 | active |
| 203-232 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | WATERBURY | Wireless | 920 | active |
| 203-233 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | WATERBURY | Wireless | 920 | active |
| 203-234 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-235 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MERIDEN | Landline | 920 | active |
| 203-236 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-237 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MERIDEN | Landline | 920 | active |
| 203-238 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MERIDEN | Landline | 920 | active |
| 203-239 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-240 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | DANBURY | Wireless | 920 | active |
| 203-241 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | DANBURY | Wireless | 920 | active |
| 203-242 | CABLEVISION LIGHTPATH, INC. - CT | HUNTINGTON | Landline | 920 | active |
| 203-243 | OMNIPOINT COMMUNICATIONS, INC. - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-244 | CSC VOICE, LLC | RIDGEFIELD | VoIP | 920 | active |
| 203-245 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MADISON | Landline | 920 | active |
| 203-246 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NORWALK | Wireless | 920 | active |
| 203-247 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NORWALK | Wireless | 920 | active |
| 203-248 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-249 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | STAMFORD | Wireless | 920 | active |
| 203-250 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | CHESHIRE | Landline | 920 | active |
| 203-251 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-252 | CABLEVISION LIGHTPATH, INC. - CT | STAMFORD | Landline | 920 | active |
| 203-253 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | STAMFORD | Wireless | 920 | active |
| 203-254 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | FAIRFIELD | Landline | 920 | active |
| 203-255 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | FAIRFIELD | Landline | 920 | active |
| 203-256 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | FAIRFIELD | Landline | 920 | active |
| 203-257 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-258 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-259 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | FAIRFIELD | Landline | 920 | active |
| 203-260 | NEW CINGULAR WIRELESS PCS, LLC - DC | BRIDGEPORT | Wireless | 920 | active |
| 203-261 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | TRUMBULL | Landline | 920 | active |
| 203-262 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WOODBURY | Landline | 920 | active |
| 203-263 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WOODBURY | Landline | 920 | active |
| 203-264 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WOODBURY | Landline | 920 | active |
| 203-265 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WALLINGFD | Landline | 920 | active |
| 203-266 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WOODBURY | Landline | 920 | active |
| 203-267 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WOODBURY | Landline | 920 | active |
| 203-268 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | TRUMBULL | Landline | 920 | active |
| 203-269 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WALLINGFD | Landline | 920 | active |
| 203-270 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEWTOWN | Landline | 920 | active |
| 203-271 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | CHESHIRE | Landline | 920 | active |
| 203-272 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | CHESHIRE | Landline | 920 | active |
| 203-273 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | STAMFORD | Wireless | 920 | active |
| 203-274 | NEW CINGULAR WIRELESS PCS, LLC - DC | STAMFORD | Wireless | 920 | active |
| 203-275 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-276 | CABLEVISION LIGHTPATH, INC. - CT | STAMFORD | Landline | 920 | active |
| 203-277 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | OLDGRNWICH | Landline | 920 | active |
| 203-278 | OMNIPOINT COMMUNICATIONS, INC. - CT | ANSONIDRBY | Wireless | 920 | active |
| 203-279 | SPOK, INC. | BRIDGEPORT | Landline | 920 | active |
| 203-280 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | DARIEN | Landline | 920 | active |
| 203-281 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-282 | SPOK, INC. | STAMFORD | Landline | 920 | active |
| 203-283 | CABLEVISION LIGHTPATH, INC. - CT | MILFORD | Landline | 920 | active |
| 203-284 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WALLINGFD | Landline | 920 | active |
| 203-285 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | NEW HAVEN | Landline | 920 | active |
| 203-286 | PAETEC ITEL, LLC | NORWALK | VoIP | 920 | active |
| 203-287 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-288 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-289 | SPOK, INC. | DANBURY | Landline | 920 | active |
| 203-290 | OMNIPOINT COMMUNICATIONS, INC. - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-291 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WESTPORT | Landline | 920 | active |
| 203-292 | CABLEVISION LIGHTPATH, INC. - CT | FAIRFIELD | Landline | 920 | active |
| 203-293 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | WESTPORT | Landline | 920 | active |
| 203-294 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WALLINGFD | Landline | 920 | active |
| 203-295 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | NORWALK | Landline | 920 | active |
| 203-296 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | BRIDGEPORT | Landline | 920 | active |
| 203-297 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | DANBURY | Landline | 920 | active |
| 203-298 | CABLEVISION LIGHTPATH, INC. - CT | NEW HAVEN | Landline | 920 | active |
| 203-299 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-300 | OMNIPOINT COMMUNICATIONS, INC. - CT | DANBURY | Wireless | 920 | active |
| 203-301 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MILFORD | Landline | 920 | active |
| 203-302 | TC SYSTEMS, INC. - NY | GREENWICH | Landline | 132 | active |
| 203-303 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | WALLINGFD | Landline | 920 | active |
| 203-304 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | NEWTOWN | Landline | 920 | active |
| 203-305 | NEW CINGULAR WIRELESS PCS, LLC - DC | ANSONIDRBY | Wireless | 920 | active |
| 203-306 | PAETEC ITEL, LLC | MILFORD | VoIP | 920 | active |
| 203-307 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | FAIRFIELD | Landline | 920 | active |
| 203-308 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | ANSONIDRBY | Wireless | 920 | active |
| 203-309 | METROPCS, INC. | DARIEN | Wireless | 920 | active |
| 203-310 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | NEW CANAAN | Landline | 920 | active |
| 203-312 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-313 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | DANBURY | Wireless | 920 | active |
| 203-314 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-315 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRANFORD | Landline | 920 | active |
| 203-316 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-317 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MERIDEN | Landline | 920 | active |
| 203-318 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MADISON | Landline | 920 | active |
| 203-319 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | FAIRFIELD | Landline | 920 | active |
| 203-320 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | DARIEN | Landline | 920 | active |
| 203-321 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-322 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-323 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-324 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-325 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-326 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-327 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-328 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-329 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-330 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-331 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-332 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-333 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-334 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-335 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-336 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-337 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-338 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-339 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-340 | CABLEVISION LIGHTPATH, INC. - CT | GREENWICH | Landline | 132 | active |
| 203-341 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WESTPORT | Landline | 920 | active |
| 203-342 | SPOK, INC. | BRIDGEPORT | Landline | 920 | active |
| 203-343 | NEW CINGULAR WIRELESS PCS, LLC - DC | ANSONIDRBY | Wireless | 920 | active |
| 203-344 | CABLEVISION LIGHTPATH, INC. - CT | OLDGRNWICH | Landline | 920 | active |
| 203-345 | CABLEVISION LIGHTPATH, INC. - CT | BRIDGEPORT | Landline | 920 | active |
| 203-346 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-347 | LEVEL 3 COMMUNICATIONS, LLC - CT | BYRAM | Landline | 132 | active |
| 203-348 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-349 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | WESTPORT | Landline | 920 | active |
| 203-350 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | MADISON | Landline | 920 | active |
| 203-351 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-352 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-353 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-354 | CABLEVISION LIGHTPATH, INC. - CT | NORWALK | Landline | 920 | active |
| 203-355 | CABLEVISION LIGHTPATH, INC. - CT | STAMFORD | Landline | 920 | active |
| 203-356 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-357 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-358 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-359 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-360 | METROPCS, INC. | BRIDGEPORT | Wireless | 920 | active |
| 203-361 | LEVEL 3 COMMUNICATIONS, LLC - CT | NEW HAVEN | Landline | 920 | active |
| 203-362 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-363 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-364 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEWTOWN | Landline | 920 | active |
| 203-365 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-366 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-367 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-368 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-369 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | OLDGRNWICH | Landline | 920 | active |
| 203-370 | AMERICAN MESSAGING SERVICES, LLC | NEW HAVEN | Landline | 920 | active |
| 203-371 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-372 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-373 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-374 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-375 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-376 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-377 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-378 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-379 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MERIDEN | Landline | 920 | active |
| 203-380 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-381 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-382 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-383 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-384 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-385 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-386 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-387 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-388 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | STAMFORD | Landline | 920 | active |
| 203-389 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-390 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | NEW HAVEN | Landline | 920 | active |
| 203-391 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | STAMFORD | Landline | 920 | active |
| 203-392 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-393 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-394 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-395 | METROPCS, INC. | BRIDGEPORT | Wireless | 920 | active |
| 203-396 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-397 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-398 | SPOK, INC. | NORWALK | Landline | 920 | active |
| 203-399 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | STAMFORD | Landline | 920 | active |
| 203-400 | NEW CINGULAR WIRELESS PCS, LLC - DC | TRUMBULL | Wireless | 920 | active |
| 203-401 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-402 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | HUNTINGTON | Landline | 920 | active |
| 203-403 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | RIDGEFIELD | Landline | 920 | active |
| 203-404 | LEVEL 3 COMMUNICATIONS, LLC - CT | NEW HAVEN | Landline | 920 | active |
| 203-405 | PAETEC ITEL, LLC | WOODBURY | VoIP | 920 | active |
| 203-406 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-407 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-408 | BANDWIDTH.COM CLEC, LLC - CT | REDDING | VoIP | 920 | active |
| 203-409 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | OLDGRNWICH | Landline | 920 | active |
| 203-410 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-412 | AMERICAN MESSAGING SERVICES, LLC | NEW HAVEN | Landline | 920 | active |
| 203-413 | PAETEC ITEL, LLC | GREENWICH | VoIP | 132 | active |
| 203-414 | NEW CINGULAR WIRELESS PCS, LLC - DC | BRIDGEPORT | Wireless | 920 | active |
| 203-415 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-416 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-417 | NEW CINGULAR WIRELESS PCS, LLC - DC | DANBURY | Wireless | 920 | active |
| 203-418 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | FAIRFIELD | Landline | 920 | active |
| 203-419 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-420 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MERIDEN | Landline | 920 | active |
| 203-421 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MADISON | Landline | 920 | active |
| 203-422 | VERIZON NEW YORK, INC. | GREENWICH | Landline | 132 | active |
| 203-423 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | WILTON | Landline | 920 | active |
| 203-424 | METROPCS, INC. | DARIEN | Wireless | 920 | active |
| 203-425 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-426 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEWTOWN | Landline | 920 | active |
| 203-427 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | MERIDEN | Landline | 920 | active |
| 203-428 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | STAMFORD | Landline | 920 | active |
| 203-429 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | WESTPORT | Landline | 920 | active |
| 203-430 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-431 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | RIDGEFIELD | Landline | 920 | active |
| 203-432 | BANDWIDTH.COM CLEC, LLC - CT | NEW HAVEN | VoIP | 920 | active |
| 203-433 | COMCAST IP PHONE, LLC | BRANFORD | VoIP | 920 | active |
| 203-434 | OMNIPOINT COMMUNICATIONS, INC. - CT | NORWALK | Wireless | 920 | active |
| 203-435 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-436 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-437 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | WATERBURY | Landline | 920 | active |
| 203-438 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | RIDGEFIELD | Landline | 920 | active |
| 203-439 | COMCAST IP PHONE, LLC | CHESHIRE | VoIP | 920 | active |
| 203-440 | COMCAST IP PHONE, LLC | MERIDEN | VoIP | 920 | active |
| 203-441 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | WOLCOTT | Landline | 920 | active |
| 203-442 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | NEW CANAAN | Landline | 920 | active |
| 203-443 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | MERIDEN | Landline | 920 | active |
| 203-444 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-445 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | TRUMBULL | Landline | 920 | active |
| 203-446 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | ANSONIDRBY | Landline | 920 | active |
| 203-447 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | HUNTINGTON | Landline | 920 | active |
| 203-448 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | DANBURY | Landline | 920 | active |
| 203-449 | METROPCS, INC. | BRIDGEPORT | Wireless | 920 | active |
| 203-450 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-451 | NEW CINGULAR WIRELESS PCS, LLC - DC | WESTPORT | Wireless | 920 | active |
| 203-452 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | TRUMBULL | Landline | 920 | active |
| 203-453 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | GUILFORD | Landline | 920 | active |
| 203-454 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WESTPORT | Landline | 920 | active |
| 203-455 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | BRIDGEPORT | Landline | 920 | active |
| 203-456 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | DANBURY | Wireless | 920 | active |
| 203-457 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | GUILFORD | Landline | 920 | active |
| 203-458 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | GUILFORD | Landline | 920 | active |
| 203-459 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | TRUMBULL | Landline | 920 | active |
| 203-460 | METROPCS, INC. | DANBURY | Landline | 920 | active |
| 203-461 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-462 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-463 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | SEYMOUR | Landline | 920 | active |
| 203-464 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-465 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-466 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-467 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-468 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-469 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-470 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | DANBURY | Wireless | 920 | active |
| 203-471 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | XXXXXXXXXX | Landline | 999 | active |
| 203-472 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | XXXXXXXXXX | Landline | active | |
| 203-473 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | XXXXXXXXXX | Landline | active | |
| 203-474 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | XXXXXXXXXX | Landline | active | |
| 203-476 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | XXXXXXXXXX | Landline | active | |
| 203-477 | SPOK, INC. | NEW HAVEN | Landline | 920 | active |
| 203-478 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | XXXXXXXXXX | Landline | active | |
| 203-479 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-480 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | FAIRFIELD | Landline | 920 | active |
| 203-481 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRANFORD | Landline | 920 | active |
| 203-482 | NEW CINGULAR WIRELESS PCS, LLC - DC | DANBURY | Wireless | 920 | active |
| 203-483 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRANFORD | Landline | 920 | active |
| 203-484 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRANFORD | Landline | 920 | active |
| 203-485 | CABLEVISION LIGHTPATH, INC. - CT | GREENWICH | Landline | 132 | active |
| 203-486 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WOODBURY | Landline | 920 | active |
| 203-487 | LEVEL 3 COMMUNICATIONS, LLC - CT | STAMFORD | Landline | 920 | active |
| 203-488 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRANFORD | Landline | 920 | active |
| 203-489 | CABLEVISION LIGHTPATH, INC. - CT | GREENWICH | Landline | 132 | active |
| 203-490 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | NAUGATUCK | Landline | 920 | active |
| 203-491 | BANDWIDTH.COM CLEC, LLC - CT | NEWTOWN | VoIP | 920 | active |
| 203-492 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-493 | LEVEL 3 COMMUNICATIONS, LLC - CT | GEORGETOWN | Landline | 920 | active |
| 203-494 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-495 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-496 | METROPCS, INC. | GREENWICH | Wireless | 132 | active |
| 203-497 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-498 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-499 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-500 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-501 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | DANBURY | Wireless | 920 | active |
| 203-502 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-503 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-504 | PAETEC ITEL, LLC | STAMFORD | VoIP | 920 | active |
| 203-505 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NORWALK | Wireless | 920 | active |
| 203-506 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-507 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-508 | PAETEC ITEL, LLC | NEW HAVEN | VoIP | 920 | active |
| 203-509 | METROPCS, INC. | WATERBURY | Wireless | 920 | active |
| 203-510 | METROPCS, INC. | WATERBURY | Wireless | 920 | active |
| 203-512 | OMNIPOINT COMMUNICATIONS, INC. - CT | DANBURY | Wireless | 920 | active |
| 203-513 | AT&T - LOCAL | HUNTINGTON | Landline | 920 | active |
| 203-514 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | MERIDEN | Landline | 920 | active |
| 203-515 | OMNIPOINT COMMUNICATIONS, INC. - CT | NORWALK | Wireless | 920 | active |
| 203-516 | LEVEL 3 COMMUNICATIONS, LLC - CT | ANSONIDRBY | Landline | 920 | active |
| 203-517 | LEVEL 3 COMMUNICATIONS, LLC - CT | STAMFORD | Landline | 920 | active |
| 203-518 | NEW CINGULAR WIRELESS PCS, LLC - DC | WATERBURY | Wireless | 920 | active |
| 203-519 | METROPCS, INC. | WATERBURY | Wireless | 920 | active |
| 203-520 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-521 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-522 | NEW CINGULAR WIRELESS PCS, LLC - DC | BRIDGEPORT | Wireless | 920 | active |
| 203-523 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | NORWALK | Landline | 920 | active |
| 203-524 | NEW CINGULAR WIRELESS PCS, LLC - DC | STAMFORD | Wireless | 920 | active |
| 203-525 | NEW CINGULAR WIRELESS PCS, LLC - DC | WATERBURY | Wireless | 920 | active |
| 203-526 | METROPCS, INC. | BRIDGEPORT | Wireless | 920 | active |
| 203-527 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-528 | LEVEL 3 COMMUNICATIONS, LLC - CT | WATERBURY | Landline | 920 | active |
| 203-529 | AT&T - LOCAL | WILTON | Landline | 920 | active |
| 203-530 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-531 | VERIZON NEW YORK, INC. | BYRAM | Landline | 132 | active |
| 203-532 | VERIZON NEW YORK, INC. | BYRAM | Landline | 132 | active |
| 203-533 | LEVEL 3 COMMUNICATIONS, LLC - CT | GUILFORD | Landline | 920 | active |
| 203-534 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-535 | COMCAST IP PHONE, LLC | NEW HAVEN | VoIP | 920 | active |
| 203-536 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | STAMFORD | Wireless | 920 | active |
| 203-537 | METROPCS, INC. | MERIDEN | Wireless | 920 | active |
| 203-538 | PAETEC ITEL, LLC | HUNTINGTON | VoIP | 920 | active |
| 203-539 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-540 | NEW CINGULAR WIRELESS PCS, LLC - DC | BRIDGEPORT | Wireless | 920 | active |
| 203-541 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-542 | AT&T - LOCAL | GREENWICH | Landline | 132 | active |
| 203-543 | OMNIPOINT COMMUNICATIONS, INC. - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-544 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | GEORGETOWN | Landline | 920 | active |
| 203-545 | METROPCS, INC. | BRIDGEPORT | Wireless | 920 | active |
| 203-546 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | DANBURY | Landline | 920 | active |
| 203-547 | ONVOY, LLC - CT | STAMFORD | Landline | 920 | active |
| 203-548 | LEVEL 3 COMMUNICATIONS, LLC - CT | STAMFORD | Landline | 920 | active |
| 203-549 | PAETEC ITEL, LLC | BRIDGEPORT | VoIP | 920 | active |
| 203-550 | OMNIPOINT COMMUNICATIONS, INC. - CT | STAMFORD | Wireless | 920 | active |
| 203-551 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | BRIDGEPORT | Landline | 920 | active |
| 203-552 | VERIZON NEW YORK, INC. | BYRAM | Landline | 132 | active |
| 203-553 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-554 | NEW CINGULAR WIRELESS PCS, LLC - DC | STAMFORD | Wireless | 920 | active |
| 203-556 | NEW CINGULAR WIRELESS PCS, LLC - DC | BRIDGEPORT | Wireless | 920 | active |
| 203-557 | CABLEVISION LIGHTPATH, INC. - CT | WESTPORT | Landline | 920 | active |
| 203-558 | NEW CINGULAR WIRELESS PCS, LLC - DC | WATERBURY | Wireless | 920 | active |
| 203-559 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | DARIEN | Landline | 920 | active |
| 203-560 | NEW CINGULAR WIRELESS PCS, LLC - DC | WATERBURY | Wireless | 920 | active |
| 203-561 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | STAMFORD | Wireless | 920 | active |
| 203-562 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-563 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WILTON | Landline | 920 | active |
| 203-564 | AT&T - LOCAL | STAMFORD | Landline | 920 | active |
| 203-565 | METROPCS, INC. | WATERBURY | Wireless | 920 | active |
| 203-566 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | STAMFORD | Landline | 920 | active |
| 203-567 | PAETEC ITEL, LLC | HUNTINGTON | VoIP | 920 | active |
| 203-568 | PAETEC ITEL, LLC | WATERBURY | VoIP | 920 | active |
| 203-569 | CABLEVISION LIGHTPATH, INC. - CT | STAMFORD | Landline | 920 | active |
| 203-570 | OMNIPOINT COMMUNICATIONS, INC. - CT | STAMFORD | Wireless | 920 | active |
| 203-571 | AT&T - LOCAL | WESTPORT | Landline | 920 | active |
| 203-572 | OMNIPOINT COMMUNICATIONS, INC. - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-573 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-574 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-575 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-576 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-577 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-578 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-579 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-580 | PEERLESS NETWORK OF CONNECTICUT, LLC - CT | BYRAM | Landline | 132 | active |
| 203-581 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-582 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-583 | LEVEL 3 COMMUNICATIONS, LLC - CT | BRIDGEPORT | Landline | 920 | active |
| 203-584 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-585 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-586 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | WOODBURY | Landline | 920 | active |
| 203-587 | CSC VOICE, LLC | GEORGETOWN | VoIP | 920 | active |
| 203-588 | CABLEVISION LIGHTPATH, INC. - CT | STAMFORD | Landline | 920 | active |
| 203-589 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-590 | LEVEL 3 COMMUNICATIONS, LLC - CT | TRUMBULL | Landline | 920 | active |
| 203-591 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-592 | NEW CINGULAR WIRELESS PCS, LLC - DC | WATERBURY | Wireless | 920 | active |
| 203-593 | SPOK, INC. | NORWALK | Landline | 920 | active |
| 203-594 | CABLEVISION LIGHTPATH, INC. - CT | NEW CANAAN | Landline | 920 | active |
| 203-595 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-596 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-597 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-598 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-599 | LEVEL 3 COMMUNICATIONS, LLC - CT | MERIDEN | Landline | 920 | active |
| 203-600 | METROPCS, INC. | MERIDEN | Wireless | 920 | active |
| 203-601 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | TRUMBULL | Landline | 920 | active |
| 203-602 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-603 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-604 | LEVEL 3 COMMUNICATIONS, LLC - CT | NORWALK | Landline | 920 | active |
| 203-605 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-606 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-607 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | STAMFORD | Landline | 920 | active |
| 203-608 | PAETEC ITEL, LLC | MERIDEN | VoIP | 920 | active |
| 203-609 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-610 | PAETEC ITEL, LLC | BRIDGEPORT | VoIP | 920 | active |
| 203-612 | LEVEL 3 COMMUNICATIONS, LLC - CT | BRIDGEPORT | Landline | 920 | active |
| 203-613 | METROPCS, INC. | NORWALK | Wireless | 920 | active |
| 203-614 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-615 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-616 | LEVEL 3 COMMUNICATIONS, LLC - CT | DANBURY | Landline | 920 | active |
| 203-617 | OMNIPOINT COMMUNICATIONS, INC. - CT | DANBURY | Wireless | 920 | active |
| 203-618 | VERIZON NEW YORK, INC. | GREENWICH | Landline | 132 | active |
| 203-619 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-620 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | DARIEN | Landline | 920 | active |
| 203-621 | PAETEC ITEL, LLC | DARIEN | VoIP | 920 | active |
| 203-622 | VERIZON NEW YORK, INC. | GREENWICH | Landline | 132 | active |
| 203-623 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-624 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-625 | VERIZON NEW YORK, INC. | GREENWICH | Landline | 132 | active |
| 203-626 | AT&T - LOCAL | WALLINGFD | Landline | 920 | active |
| 203-627 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-628 | CABLEVISION LIGHTPATH, INC. - CT | DANBURY | Landline | 920 | active |
| 203-629 | VERIZON NEW YORK, INC. | GREENWICH | Landline | 132 | active |
| 203-630 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MERIDEN | Landline | 920 | active |
| 203-631 | NEW CINGULAR WIRELESS PCS, LLC - DC | MERIDEN | Wireless | 920 | active |
| 203-632 | PAETEC ITEL, LLC | NAUGATUCK | VoIP | 920 | active |
| 203-633 | LEVEL 3 COMMUNICATIONS, LLC - CT | WOLCOTT | Landline | 920 | active |
| 203-634 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MERIDEN | Landline | 920 | active |
| 203-635 | LEVEL 3 COMMUNICATIONS, LLC - CT | WESTPORT | Landline | 920 | active |
| 203-636 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | DARIEN | Landline | 920 | active |
| 203-637 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | OLDGRNWICH | Landline | 920 | active |
| 203-638 | PAETEC ITEL, LLC | TRUMBULL | VoIP | 920 | active |
| 203-639 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MERIDEN | Landline | 920 | active |
| 203-640 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-641 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-642 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | NORWALK | Landline | 920 | active |
| 203-643 | PAETEC ITEL, LLC | BRANFORD | VoIP | 920 | active |
| 203-644 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NORWALK | Wireless | 920 | active |
| 203-645 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-646 | ONVOY, LLC - CT | BRANFORD | Landline | 920 | active |
| 203-647 | PAETEC ITEL, LLC | MILFORD | VoIP | 920 | active |
| 203-648 | LEVEL 3 COMMUNICATIONS, LLC - CT | DANBURY | Landline | 920 | active |
| 203-649 | PAETEC ITEL, LLC | CHESHIRE | VoIP | 920 | active |
| 203-650 | METROPCS, INC. | BRIDGEPORT | Wireless | 920 | active |
| 203-651 | PAETEC ITEL, LLC | CHESHIRE | VoIP | 920 | active |
| 203-652 | PAETEC ITEL, LLC | NEW CANAAN | VoIP | 920 | active |
| 203-653 | PAETEC ITEL, LLC | STAMFORD | VoIP | 920 | active |
| 203-654 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-655 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DARIEN | Landline | 920 | active |
| 203-656 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DARIEN | Landline | 920 | active |
| 203-657 | AMERICAN MESSAGING SERVICES, LLC | NEW HAVEN | Landline | 920 | active |
| 203-658 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | STAMFORD | Landline | 920 | active |
| 203-659 | PAETEC ITEL, LLC | FAIRFIELD | VoIP | 920 | active |
| 203-660 | ONVOY, LLC - CT | BYRAM | Landline | 132 | active |
| 203-661 | VERIZON NEW YORK, INC. | GREENWICH | Landline | 132 | active |
| 203-662 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DARIEN | Landline | 920 | active |
| 203-663 | PAETEC ITEL, LLC | NORWALK | VoIP | 920 | active |
| 203-664 | CABLEVISION LIGHTPATH, INC. - CT | REDDING | Landline | 920 | active |
| 203-665 | PAETEC ITEL, LLC | WILTON | VoIP | 920 | active |
| 203-666 | LEVEL 3 COMMUNICATIONS, LLC - CT | BRIDGEPORT | Landline | 920 | active |
| 203-667 | OMNIPOINT COMMUNICATIONS, INC. - CT | STAMFORD | Wireless | 920 | active |
| 203-668 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-669 | LEVEL 3 COMMUNICATIONS, LLC - CT | DARIEN | Landline | 920 | active |
| 203-670 | OMNIPOINT COMMUNICATIONS, INC. - CT | FAIRFIELD | Wireless | 920 | active |
| 203-671 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-672 | PAETEC ITEL, LLC | NEW HAVEN | VoIP | 920 | active |
| 203-673 | AT&T - LOCAL | BRIDGEPORT | Landline | 920 | active |
| 203-674 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-675 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-676 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-677 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WALLINGFD | Landline | 920 | active |
| 203-678 | PAETEC ITEL, LLC | WALLINGFD | VoIP | 920 | active |
| 203-679 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WALLINGFD | Landline | 920 | active |
| 203-680 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-681 | VERIZON NEW YORK, INC. | BYRAM | Landline | 132 | active |
| 203-682 | PAETEC ITEL, LLC | WESTPORT | VoIP | 920 | active |
| 203-683 | PAETEC ITEL, LLC | BRIDGEPORT | VoIP | 920 | active |
| 203-684 | METROPCS, INC. | NEW HAVEN | Wireless | 920 | active |
| 203-685 | OMNIPOINT COMMUNICATIONS, INC. - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-686 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MERIDEN | Landline | 920 | active |
| 203-687 | LEVEL 3 COMMUNICATIONS, LLC - CT | NEW HAVEN | Landline | 920 | active |
| 203-688 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-689 | AT&T - LOCAL | GUILFORD | Landline | 920 | active |
| 203-690 | OMNIPOINT COMMUNICATIONS, INC. - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-691 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-692 | LEVEL 3 COMMUNICATIONS, LLC - CT | FAIRFIELD | Landline | 920 | active |
| 203-693 | CABLEVISION LIGHTPATH, INC. - CT | MILFORD | Landline | 920 | active |
| 203-694 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MERIDEN | Landline | 920 | active |
| 203-695 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-696 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | BRIDGEPORT | Landline | 920 | active |
| 203-697 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WALLINGFD | Landline | 920 | active |
| 203-698 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | OLDGRNWICH | Landline | 920 | active |
| 203-699 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | CHESHIRE | Landline | 920 | active |
| 203-701 | AT&T - LOCAL | MILFORD | Landline | 920 | active |
| 203-702 | PAETEC ITEL, LLC | DANBURY | VoIP | 920 | active |
| 203-703 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-704 | LEVEL 3 COMMUNICATIONS, LLC - CT | WOLCOTT | Landline | 920 | active |
| 203-705 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | STAMFORD | Landline | 920 | active |
| 203-706 | PAETEC ITEL, LLC | WATERBURY | VoIP | 920 | active |
| 203-707 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | WATERBURY | Wireless | 920 | active |
| 203-708 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-709 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-710 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-712 | LEVEL 3 COMMUNICATIONS, LLC - CT | HUNTINGTON | Landline | 920 | active |
| 203-713 | ONVOY, LLC - CT | MILFORD | Landline | 920 | active |
| 203-714 | ONVOY SPECTRUM, LLC | NAUGATUCK | Wireless | 920 | active |
| 203-715 | OMNIPOINT COMMUNICATIONS, INC. - CT | MERIDEN | Wireless | 920 | active |
| 203-716 | LEVEL 3 COMMUNICATIONS, LLC - CT | NEW CANAAN | Landline | 920 | active |
| 203-717 | CSC VOICE, LLC | GREENWICH | VoIP | 132 | active |
| 203-718 | LEVEL 3 COMMUNICATIONS, LLC - CT | CHESHIRE | Landline | 920 | active |
| 203-719 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | STAMFORD | Landline | 920 | active |
| 203-720 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NAUGATUCK | Landline | 920 | active |
| 203-721 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | WATERBURY | Wireless | 920 | active |
| 203-722 | NEW CINGULAR WIRELESS PCS, LLC - DC | NORWALK | Wireless | 920 | active |
| 203-723 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NAUGATUCK | Landline | 920 | active |
| 203-724 | PAETEC ITEL, LLC | STAMFORD | VoIP | 920 | active |
| 203-725 | COMCAST IP PHONE, LLC | WATERBURY | VoIP | 920 | active |
| 203-726 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-727 | OMNIPOINT COMMUNICATIONS, INC. - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-728 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-729 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NAUGATUCK | Landline | 920 | active |
| 203-730 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-731 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-732 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | ANSONIDRBY | Landline | 920 | active |
| 203-733 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | DANBURY | Wireless | 920 | active |
| 203-734 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | ANSONIDRBY | Landline | 920 | active |
| 203-735 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | ANSONIDRBY | Landline | 920 | active |
| 203-736 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | ANSONIDRBY | Landline | 920 | active |
| 203-737 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-738 | PAETEC ITEL, LLC | GUILFORD | VoIP | 920 | active |
| 203-739 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-740 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-741 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WALLINGFD | Landline | 920 | active |
| 203-742 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | GREENWICH | Landline | 132 | active |
| 203-743 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-744 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-745 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-746 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-747 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | NEW HAVEN | Landline | 920 | active |
| 203-748 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-749 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-750 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-751 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | ANSONIDRBY | Landline | 920 | active |
| 203-752 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-753 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-754 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-755 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-756 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-757 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-758 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-759 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WATERBURY | Landline | 920 | active |
| 203-760 | PEERLESS NETWORK OF CONNECTICUT, LLC - CT | BRIDGEPORT | Landline | 920 | active |
| 203-761 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WILTON | Landline | 920 | active |
| 203-762 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WILTON | Landline | 920 | active |
| 203-763 | LEVEL 3 COMMUNICATIONS, LLC - CT | FAIRFIELD | Landline | 920 | active |
| 203-764 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-765 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-766 | AMERICAN MESSAGING SERVICES, LLC | NEW HAVEN | Landline | 920 | active |
| 203-767 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-768 | OMNIPOINT COMMUNICATIONS, INC. - CT | WATERBURY | Wireless | 920 | active |
| 203-769 | VERIZON NEW YORK, INC. | GREENWICH | Landline | 132 | active |
| 203-770 | NEW CINGULAR WIRELESS PCS, LLC - DC | DANBURY | Wireless | 920 | active |
| 203-771 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-772 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-773 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-774 | PAETEC ITEL, LLC | WALLINGFD | VoIP | 920 | active |
| 203-775 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-776 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-777 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-778 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-779 | PAETEC ITEL, LLC | MADISON | VoIP | 920 | active |
| 203-780 | PEERLESS NETWORK OF CONNECTICUT, LLC - CT | NEW HAVEN | Landline | 920 | active |
| 203-781 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-782 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-783 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MILFORD | Landline | 920 | active |
| 203-784 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-785 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-786 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-787 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-788 | NEW CINGULAR WIRELESS PCS, LLC - DC | DANBURY | Wireless | 920 | active |
| 203-789 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-790 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-791 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-792 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-793 | LEVEL 3 COMMUNICATIONS, LLC - CT | WALLINGFD | Landline | 920 | active |
| 203-794 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-795 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-796 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-797 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-798 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-799 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-800 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-801 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW CANAAN | Landline | 920 | active |
| 203-802 | METROPCS, INC. | WATERBURY | Wireless | 920 | active |
| 203-803 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NORWALK | Wireless | 920 | active |
| 203-804 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-805 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | WATERBURY | Landline | 920 | active |
| 203-806 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | CHESHIRE | Landline | 920 | active |
| 203-807 | NEW CINGULAR WIRELESS PCS, LLC - DC | NORWALK | Wireless | 920 | active |
| 203-808 | OMNIPOINT COMMUNICATIONS, INC. - CT | WATERBURY | Wireless | 920 | active |
| 203-809 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-810 | CABLEVISION LIGHTPATH, INC. - CT | NORWALK | Landline | 920 | active |
| 203-812 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-813 | TC SYSTEMS, INC. - NY | BYRAM | Landline | 132 | active |
| 203-814 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-815 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-816 | LEVEL 3 COMMUNICATIONS, LLC - CT | TRUMBULL | Landline | 920 | active |
| 203-817 | CABLEVISION LIGHTPATH, INC. - CT | STAMFORD | Landline | 920 | active |
| 203-818 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | NORWALK | Landline | 920 | active |
| 203-819 | NEW CINGULAR WIRELESS PCS, LLC - DC | WATERBURY | Wireless | 920 | active |
| 203-820 | METROPCS, INC. | NORWALK | Wireless | 920 | active |
| 203-821 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-822 | AT&T - LOCAL | NORWALK | Landline | 920 | active |
| 203-823 | COMCAST IP PHONE, LLC | NEW HAVEN | VoIP | 920 | active |
| 203-824 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-825 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-826 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-827 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | OLDGRNWICH | Landline | 920 | active |
| 203-828 | LEVEL 3 COMMUNICATIONS, LLC - CT | SEYMOUR | Landline | 920 | active |
| 203-829 | OMNIPOINT COMMUNICATIONS, INC. - CT | NORWALK | Wireless | 920 | active |
| 203-830 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-831 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-832 | NEW CINGULAR WIRELESS PCS, LLC - DC | STAMFORD | Wireless | 920 | active |
| 203-833 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-834 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WILTON | Landline | 920 | active |
| 203-835 | SPOK, INC. | NORWALK | Landline | 920 | active |
| 203-836 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-837 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | DANBURY | Landline | 920 | active |
| 203-838 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-839 | SPOK, INC. | NORWALK | Landline | 920 | active |
| 203-840 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-841 | PAETEC ITEL, LLC | WATERBURY | VoIP | 920 | active |
| 203-842 | LEVEL 3 COMMUNICATIONS, LLC - CT | NORWALK | Landline | 920 | active |
| 203-843 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Landline | 920 | active |
| 203-844 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | FAIRFIELD | Landline | 920 | active |
| 203-845 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-846 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-847 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-848 | PAETEC ITEL, LLC | NEW HAVEN | VoIP | 920 | active |
| 203-849 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-850 | METROPCS, INC. | NEW HAVEN | Wireless | 920 | active |
| 203-851 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-852 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-853 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-854 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-855 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-856 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NORWALK | Wireless | 920 | active |
| 203-857 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-858 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NORWALK | Wireless | 920 | active |
| 203-859 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | NEW HAVEN | Landline | 920 | active |
| 203-861 | VERIZON NEW YORK, INC. | GREENWICH | Landline | 132 | active |
| 203-862 | VERIZON NEW YORK, INC. | GREENWICH | Landline | 132 | active |
| 203-863 | VERIZON NEW YORK, INC. | GREENWICH | Landline | 132 | active |
| 203-864 | METROPCS, INC. | BRIDGEPORT | Wireless | 920 | active |
| 203-865 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-866 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-867 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-868 | AT&T - LOCAL | NEW HAVEN | Landline | 920 | active |
| 203-869 | VERIZON NEW YORK, INC. | GREENWICH | Landline | 132 | active |
| 203-870 | CABLEVISION LIGHTPATH, INC. - CT | BRIDGEPORT | Landline | 920 | active |
| 203-871 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | BRANFORD | Landline | 920 | active |
| 203-872 | BANDWIDTH.COM CLEC, LLC - CT | CHESHIRE | VoIP | 920 | active |
| 203-873 | NEW CINGULAR WIRELESS PCS, LLC - DC | BRIDGEPORT | Wireless | 920 | active |
| 203-874 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MILFORD | Landline | 920 | active |
| 203-875 | AT&T - LOCAL | DARIEN | Landline | 920 | active |
| 203-876 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MILFORD | Landline | 920 | active |
| 203-877 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MILFORD | Landline | 920 | active |
| 203-878 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MILFORD | Landline | 920 | active |
| 203-879 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WOLCOTT | Landline | 920 | active |
| 203-880 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | TRUMBULL | Landline | 920 | active |
| 203-881 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | SEYMOUR | Landline | 920 | active |
| 203-882 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | MILFORD | Landline | 920 | active |
| 203-883 | LEVEL 3 COMMUNICATIONS, LLC - CT | STAMFORD | Landline | 920 | active |
| 203-884 | ONVOY, LLC - CT | GUILFORD | Landline | 920 | active |
| 203-885 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | DANBURY | Wireless | 920 | active |
| 203-886 | PAETEC ITEL, LLC | MERIDEN | VoIP | 920 | active |
| 203-887 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-888 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | SEYMOUR | Landline | 920 | active |
| 203-889 | LEVEL 3 COMMUNICATIONS, LLC - CT | NEW HAVEN | Landline | 920 | active |
| 203-890 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-891 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-892 | OMNIPOINT COMMUNICATIONS, INC. - CT | ANSONIDRBY | Wireless | 920 | active |
| 203-893 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | ANSONIDRBY | Wireless | 920 | active |
| 203-894 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | RIDGEFIELD | Landline | 920 | active |
| 203-895 | NEW CINGULAR WIRELESS PCS, LLC - DC | TRUMBULL | Wireless | 920 | active |
| 203-896 | PEERLESS NETWORK OF CONNECTICUT, LLC - CT | MADISON | Landline | 920 | active |
| 203-897 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | STAMFORD | Landline | 920 | active |
| 203-898 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | DARIEN | Landline | 920 | active |
| 203-899 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-900 | CSC VOICE, LLC | GREENWICH | VoIP | 132 | active |
| 203-901 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-902 | ONVOY, LLC - CT | NEW HAVEN | Landline | 920 | active |
| 203-903 | LEVEL 3 COMMUNICATIONS, LLC - CT | NEW HAVEN | Landline | 920 | active |
| 203-904 | OMNIPOINT COMMUNICATIONS, INC. - CT | NORWALK | Wireless | 920 | active |
| 203-905 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | STAMFORD | Landline | 920 | active |
| 203-906 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | ANSONIDRBY | Wireless | 920 | active |
| 203-907 | PAETEC ITEL, LLC | NEW HAVEN | VoIP | 920 | active |
| 203-908 | OMNIPOINT COMMUNICATIONS, INC. - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-909 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-910 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | WATERBURY | Wireless | 920 | active |
| 203-912 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | STAMFORD | Wireless | 920 | active |
| 203-913 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-914 | CSC VOICE, LLC | STAMFORD | VoIP | 920 | active |
| 203-915 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-916 | LEVEL 3 COMMUNICATIONS, LLC - CT | BRIDGEPORT | Landline | 920 | active |
| 203-917 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | DANBURY | Wireless | 920 | active |
| 203-918 | NEW CINGULAR WIRELESS PCS, LLC - DC | STAMFORD | Wireless | 920 | active |
| 203-919 | OMNIPOINT COMMUNICATIONS, INC. - CT | NORWALK | Wireless | 920 | active |
| 203-920 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | NEW CANAAN | Landline | 920 | active |
| 203-921 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-922 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | HUNTINGTON | Landline | 920 | active |
| 203-923 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | BRIDGEPORT | Landline | 920 | active |
| 203-924 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | HUNTINGTON | Landline | 920 | active |
| 203-925 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | HUNTINGTON | Landline | 920 | active |
| 203-926 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | HUNTINGTON | Landline | 920 | active |
| 203-927 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-928 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-929 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | HUNTINGTON | Landline | 920 | active |
| 203-930 | LEVEL 3 COMMUNICATIONS, LLC - CT | GREENWICH | Landline | 132 | active |
| 203-931 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-932 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-933 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-934 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-935 | LEVEL 3 COMMUNICATIONS, LLC - CT | MERIDEN | Landline | 920 | active |
| 203-936 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-937 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-938 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | REDDING | Landline | 920 | active |
| 203-939 | CSC VOICE, LLC | NORWALK | VoIP | 920 | active |
| 203-940 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-941 | BANDWIDTH.COM CLEC, LLC - CT | SEYMOUR | VoIP | 920 | active |
| 203-942 | OMNIPOINT COMMUNICATIONS, INC. - CT | DANBURY | Wireless | 920 | active |
| 203-943 | OMNIPOINT COMMUNICATIONS, INC. - CT | NORWALK | Wireless | 920 | active |
| 203-944 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | HUNTINGTON | Landline | 920 | active |
| 203-945 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-946 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-947 | NEW CINGULAR WIRELESS PCS, LLC - DC | DANBURY | Wireless | 920 | active |
| 203-948 | OMNIPOINT COMMUNICATIONS, INC. - CT | DANBURY | Wireless | 920 | active |
| 203-949 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | WALLINGFD | Landline | 920 | active |
| 203-951 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | MILFORD | Landline | 920 | active |
| 203-952 | METROPCS, INC. | NORWALK | Wireless | 920 | active |
| 203-953 | OMNIPOINT COMMUNICATIONS, INC. - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-954 | PAETEC ITEL, LLC | ANSONIDRBY | VoIP | 920 | active |
| 203-955 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | FAIRFIELD | Landline | 920 | active |
| 203-956 | CABLEVISION LIGHTPATH, INC. - CT | NORWALK | Landline | 920 | active |
| 203-957 | CSC VOICE, LLC | NORWALK | VoIP | 920 | active |
| 203-960 | CABLEVISION LIGHTPATH, INC. - CT | STAMFORD | Landline | 920 | active |
| 203-961 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-962 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-963 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-964 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-965 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-966 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW CANAAN | Landline | 920 | active |
| 203-967 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-968 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-969 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-970 | CABLEVISION LIGHTPATH, INC. - CT | NORWALK | Landline | 920 | active |
| 203-971 | CABLEVISION LIGHTPATH, INC. - CT | GREENWICH | Landline | 132 | active |
| 203-972 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW CANAAN | Landline | 920 | active |
| 203-973 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-974 | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | NEW HAVEN | Landline | 920 | active |
| 203-975 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-977 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-978 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | STAMFORD | Landline | 920 | active |
| 203-979 | NEW CINGULAR WIRELESS PCS, LLC - DC | STAMFORD | Wireless | 920 | active |
| 203-980 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NEW HAVEN | Wireless | 920 | active |
| 203-981 | METROPCS, INC. | NORWALK | Wireless | 920 | active |
| 203-982 | METROPCS, INC. | WATERBURY | Wireless | 920 | active |
| 203-983 | PAETEC ITEL, LLC | GREENWICH | VoIP | 132 | active |
| 203-984 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | NORWALK | Wireless | 920 | active |
| 203-985 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NEW HAVEN | Landline | 920 | active |
| 203-986 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | OLDGRNWICH | Landline | 920 | active |
| 203-987 | LEVEL 3 COMMUNICATIONS, LLC - CT | GREENWICH | Landline | 132 | active |
| 203-988 | NEW CINGULAR WIRELESS PCS, LLC - DC | NEW HAVEN | Wireless | 920 | active |
| 203-989 | LEVEL 3 COMMUNICATIONS, LLC - CT | STAMFORD | Landline | 920 | active |
| 203-990 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | OLDGRNWICH | Landline | 920 | active |
| 203-991 | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | NORWALK | Landline | 920 | active |
| 203-992 | CSC VOICE, LLC | GREENWICH | VoIP | 132 | active |
| 203-993 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | BRIDGEPORT | Wireless | 920 | active |
| 203-994 | OMNIPOINT COMMUNICATIONS, INC. - CT | DANBURY | Wireless | 920 | active |
| 203-995 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT | BRIDGEPORT | Landline | 920 | active |
| 203-996 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
| 203-997 | OMNIPOINT COMMUNICATIONS, INC. - CT | ANSONIDRBY | Wireless | 920 | active |
| 203-998 | LEVEL 3 COMMUNICATIONS, LLC - CT | STAMFORD | Landline | 920 | active |
| 203-999 | OMNIPOINT COMMUNICATIONS, INC. - CT | NEW HAVEN | Wireless | 920 | active |
Related Area Codes
Area code 203 shares its geographic region with the following overlay area codes: