Area Code 720 — Denver, Aurora, Fort Collins, Colorado
ActiveData last updated: June 25, 2026
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| T-MOBILE USA, INC. | 6529 | 132 |
| QWEST CORPORATION | 9636 | 103 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 92 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | 75 |
| BANDWIDTH.COM CLEC, LLC - CO | 078F | 55 |
| ONVOY, LLC - CO | 026D | 54 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 51 |
| LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | 46 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CO | 7378 | 31 |
| COMCAST IP PHONE, LLC | 318J | 21 |
Rate Centers
DENVER
LONGMONT
ALLNSPKLYN
KEENESBURG
HUDSON
FORTLUPTON
GEORGETOWN
DEER TRAIL
DECKERS
STRASBURG
BYERS
BENNETT
Exchange Listings (NXX)
| NPA-NXX | Carrier | Rate Center | Type | LATA | Status |
|---|---|---|---|---|---|
| 720-200 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-201 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-202 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-203 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-204 | LEVEL 3 COMMUNICATIONS, LLC - CO | LONGMONT | Landline | 656 | active |
| 720-205 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-206 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-207 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-208 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-209 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-210 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-212 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-213 | PAETEC ITEL, LLC | DENVER | VoIP | 656 | active |
| 720-214 | PAETEC ITEL, LLC | DENVER | VoIP | 656 | active |
| 720-215 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-216 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | Landline | 656 | active |
| 720-217 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-218 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-219 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-220 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-221 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-222 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-223 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-224 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-225 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-226 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-227 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-228 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-229 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-230 | XO COLORADO, LLC | DENVER | Landline | 656 | active |
| 720-231 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-232 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-233 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-234 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-235 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-236 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-237 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-238 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-239 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | Landline | 656 | active |
| 720-240 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-241 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-242 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-243 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-244 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-245 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-246 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-247 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-248 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-249 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-250 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-251 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-252 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-253 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-254 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-255 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-256 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-257 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-258 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | Landline | 656 | active |
| 720-259 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-260 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-261 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-262 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-263 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-264 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-265 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-266 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-267 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-268 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-269 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-270 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-271 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-272 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-273 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-274 | PAETEC ITEL, LLC | DENVER | VoIP | 656 | active |
| 720-275 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-276 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-277 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-278 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-279 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-280 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-281 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-282 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-283 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-284 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-285 | XO COLORADO, LLC | DENVER | Landline | 656 | active |
| 720-286 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | Landline | 656 | active |
| 720-287 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-288 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-289 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-290 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-291 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-292 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-293 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-294 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-295 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-296 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-297 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-298 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-299 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-300 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-301 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-302 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-303 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-304 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-305 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-306 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-307 | AT&T - LOCAL | ALLNSPKLYN | Landline | 656 | active |
| 720-308 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-309 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-310 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | ALLNSPKLYN | VoIP | 656 | active |
| 720-312 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-313 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-314 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-315 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-316 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-317 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-318 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-319 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-320 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-321 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-322 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-323 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-324 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-325 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-326 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-327 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-328 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-329 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-330 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-331 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-332 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-333 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-334 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-335 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-336 | BANDWIDTH.COM CLEC, LLC - CO | KEENESBURG | VoIP | 656 | active |
| 720-337 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-338 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-339 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-340 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | LONGMONT | Wireless | 656 | active |
| 720-341 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-342 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-343 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-344 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-345 | ZIPPYTECH INCORPORATED | DENVER | Landline | 656 | active |
| 720-346 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-347 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-348 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-349 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-350 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-351 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-352 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-353 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-354 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-355 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-356 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-357 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-358 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | HUDSON | Landline | 656 | active |
| 720-359 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-360 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-361 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-362 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-363 | METROPCS, INC. | DENVER | Wireless | 656 | active |
| 720-364 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-365 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-366 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-367 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-368 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-369 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-370 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-371 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-372 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-373 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-374 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-375 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-376 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-377 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-378 | NEW CINGULAR WIRELESS PCS, LLC | LONGMONT | Wireless | 656 | active |
| 720-379 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-380 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-381 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-382 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-383 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | FORTLUPTON | Wireless | 656 | active |
| 720-384 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-385 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-386 | BANDWIDTH.COM CLEC, LLC - CO | GEORGETOWN | VoIP | 656 | active |
| 720-387 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-388 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-389 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-390 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-391 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-392 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DEER TRAIL | Wireless | 656 | active |
| 720-393 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-394 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-395 | AT&T - LOCAL | DENVER | Landline | 656 | active |
| 720-396 | AT&T - LOCAL | DENVER | Landline | 656 | active |
| 720-397 | AT&T - LOCAL | DENVER | Landline | 656 | active |
| 720-398 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-399 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-400 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-401 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-402 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-403 | PEERLESS NETWORK OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-404 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-405 | INTRADO COMMUNICATIONS, LLC | DENVER | Landline | 656 | active |
| 720-406 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-407 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-408 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-409 | PAETEC ITEL, LLC | DENVER | VoIP | 656 | active |
| 720-410 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-412 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-413 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-414 | LEVEL 3 COMMUNICATIONS, LLC - CO | ALLNSPKLYN | Landline | 656 | active |
| 720-415 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-416 | METROPCS, INC. | DENVER | Wireless | 656 | active |
| 720-417 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-418 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-419 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-420 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-421 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-422 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-423 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-424 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-425 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-426 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-427 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-428 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-429 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-430 | AT&T - LOCAL | DENVER | Landline | 656 | active |
| 720-431 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-432 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-433 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-434 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-435 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-436 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-437 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-438 | ONVOY, LLC - CO | LONGMONT | Landline | 656 | active |
| 720-439 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-440 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-441 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-442 | BANDWIDTH.COM CLEC, LLC - CO | LONGMONT | VoIP | 656 | active |
| 720-443 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-444 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-445 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-446 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-447 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-448 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-449 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-450 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-451 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-452 | PEERLESS NETWORK OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-453 | T-MOBILE USA, INC. | LONGMONT | Wireless | 656 | active |
| 720-454 | PAETEC ITEL, LLC | DENVER | VoIP | 656 | active |
| 720-455 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-456 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-457 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-458 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-459 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-460 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-461 | METROPCS, INC. | DENVER | Wireless | 656 | active |
| 720-462 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-463 | ONVOY, LLC - CO | DECKERS | Landline | 656 | active |
| 720-464 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-465 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-466 | NEW CINGULAR WIRELESS PCS, LLC | FORTLUPTON | Wireless | 656 | active |
| 720-467 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-468 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-469 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-470 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-471 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-472 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-473 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-474 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-475 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-476 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-477 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-478 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-479 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | Landline | 656 | active |
| 720-480 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-481 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-482 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-483 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-484 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-485 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-486 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-487 | TELNYX LLC | LONGMONT | VoIP | 656 | active |
| 720-488 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-489 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-490 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-491 | NEW CINGULAR WIRELESS PCS, LLC | LONGMONT | Wireless | 656 | active |
| 720-492 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-493 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-494 | QWEST CORPORATION | LONGMONT | Landline | 656 | active |
| 720-495 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-496 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-497 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-498 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-499 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-500 | PEERLESS NETWORK OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-501 | METROPCS, INC. | DENVER | Wireless | 656 | active |
| 720-502 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-503 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-504 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-505 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-506 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-507 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-508 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-509 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-510 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-512 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-513 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-514 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | Landline | 656 | active |
| 720-515 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-516 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-517 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-518 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-519 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-520 | ONVOY SPECTRUM, LLC | DENVER | Wireless | 656 | active |
| 720-521 | AMERICAN MESSAGING SERVICES, LLC | DENVER | Landline | 656 | active |
| 720-522 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-523 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-524 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-525 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-526 | NEW CINGULAR WIRELESS PCS, LLC | LONGMONT | Wireless | 656 | active |
| 720-527 | TELIAX, INC. - CO | DENVER | Landline | 656 | active |
| 720-528 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-529 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-530 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-531 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-532 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-533 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-534 | VONAGE AMERICA LLC | LONGMONT | VoIP | 656 | active |
| 720-535 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-536 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-537 | FASTTRACK COMMUNICATIONS, INC. - CO | DENVER | Landline | 656 | active |
| 720-538 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | FORTLUPTON | Wireless | 656 | active |
| 720-539 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-540 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-541 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-542 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-543 | PEERLESS NETWORK OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-544 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-545 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-546 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-547 | BANDWIDTH.COM CLEC, LLC - CO | KEENESBURG | VoIP | 656 | active |
| 720-548 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-549 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-550 | PAETEC ITEL, LLC | DENVER | VoIP | 656 | active |
| 720-551 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-552 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | LONGMONT | Wireless | 656 | active |
| 720-553 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-554 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-556 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-557 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-558 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-559 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-560 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-561 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-562 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-563 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-564 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-565 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-566 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-567 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-568 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-569 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-570 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-571 | ONVOY, LLC - CO | ALLNSPKLYN | Landline | 656 | active |
| 720-572 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-573 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-574 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-575 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-576 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-577 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-578 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-579 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-580 | BANDWIDTH.COM CLEC, LLC - CO | KEENESBURG | VoIP | 656 | active |
| 720-581 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-582 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-583 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-584 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-585 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-586 | METROPCS, INC. | DENVER | Wireless | 656 | active |
| 720-587 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-588 | NUSO, LLC | DENVER | Wireless | 656 | active |
| 720-589 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-590 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-591 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-592 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-593 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-594 | AIRUS, INC. - CO | DENVER | Landline | 656 | active |
| 720-595 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-596 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-597 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | LONGMONT | Wireless | 656 | active |
| 720-598 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-599 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-600 | ONVOY, LLC - CO | LONGMONT | Landline | 656 | active |
| 720-601 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-602 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-603 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-604 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-605 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-606 | NEW CINGULAR WIRELESS PCS, LLC | FORTLUPTON | Wireless | 656 | active |
| 720-607 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-608 | BANDWIDTH.COM CLEC, LLC - CO | GEORGETOWN | VoIP | 656 | active |
| 720-609 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-610 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-612 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-613 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | HUDSON | Landline | 656 | active |
| 720-614 | AIRESPRING, INC. | DENVER | VoIP | 656 | active |
| 720-615 | BANDWIDTH.COM CLEC, LLC - CO | KEENESBURG | VoIP | 656 | active |
| 720-616 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-617 | PAETEC ITEL, LLC | DENVER | VoIP | 656 | active |
| 720-618 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-619 | BANDWIDTH.COM CLEC, LLC - CO | GEORGETOWN | VoIP | 656 | active |
| 720-620 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-621 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-622 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-623 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-624 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-625 | PAETEC ITEL, LLC | DENVER | VoIP | 656 | active |
| 720-626 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-627 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-628 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-629 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-630 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-631 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-632 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-633 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-634 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-635 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-636 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-637 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-638 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-639 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-640 | LEVEL 3 COMMUNICATIONS, LLC - CO | HUDSON | Landline | 656 | active |
| 720-641 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-642 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-643 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-644 | PAETEC ITEL, LLC | DENVER | VoIP | 656 | active |
| 720-645 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-646 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-647 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-648 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-649 | BANDWIDTH.COM CLEC, LLC - CO | GEORGETOWN | VoIP | 656 | active |
| 720-650 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-651 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-652 | QWEST CORPORATION | LONGMONT | Landline | 656 | active |
| 720-653 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-654 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-655 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-656 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-657 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-658 | TELSTAR COMMUNICATIONS INC | DENVER | Landline | 656 | active |
| 720-659 | VONAGE AMERICA LLC | DENVER | VoIP | 656 | active |
| 720-660 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-661 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-662 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-663 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-664 | ONVOY, LLC - CO | ALLNSPKLYN | Landline | 656 | active |
| 720-665 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-666 | PEERLESS NETWORK OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-667 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-668 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-669 | ONVOY, LLC - CO | HUDSON | Landline | 656 | active |
| 720-670 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-671 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-672 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-673 | EXIANT COMMUNICATIONS LLC | DENVER | VoIP | 656 | active |
| 720-674 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-675 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-676 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-677 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-678 | CSC WIRELESS, LLC | DENVER | Wireless | 656 | active |
| 720-679 | ONVOY, LLC - CO | GEORGETOWN | Landline | 656 | active |
| 720-680 | T-MOBILE USA, INC. | LONGMONT | Wireless | 656 | active |
| 720-681 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-682 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-683 | BANDWIDTH.COM CLEC, LLC - CO | FORTLUPTON | VoIP | 656 | active |
| 720-684 | LEVEL 3 COMMUNICATIONS, LLC - CO | LONGMONT | Landline | 656 | active |
| 720-685 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-686 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-687 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-688 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-689 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-690 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-691 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-692 | METROPCS, INC. | DENVER | Wireless | 656 | active |
| 720-693 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-694 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-695 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-696 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-697 | CENTURYLINK COMMUNICATIONS, LLC | DENVER | VoIP | 656 | active |
| 720-698 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | LONGMONT | Wireless | 656 | active |
| 720-699 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-701 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-702 | ONVOY, LLC - CO | KEENESBURG | Landline | 656 | active |
| 720-703 | NUSO, LLC | DENVER | VoIP | 656 | active |
| 720-704 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-705 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-706 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-707 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-708 | TELIAX, INC. - CO | DENVER | VoIP | 656 | active |
| 720-709 | PAETEC ITEL, LLC | DENVER | VoIP | 656 | active |
| 720-710 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-712 | BANDWIDTH.COM CLEC, LLC - CO | FORTLUPTON | VoIP | 656 | active |
| 720-713 | ONVOY, LLC - CO | LONGMONT | Landline | 656 | active |
| 720-714 | ONVOY, LLC - CO | LONGMONT | Landline | 656 | active |
| 720-715 | BANDWIDTH.COM CLEC, LLC - CO | DECKERS | VoIP | 656 | active |
| 720-716 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-717 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-718 | QWEST CORPORATION | LONGMONT | Landline | 656 | active |
| 720-719 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-720 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-721 | THE VOICE APPLICATION NETWORK, LLC | DENVER | VoIP | 656 | active |
| 720-722 | CENTURYLINK COMMUNICATIONS, LLC | DENVER | VoIP | 656 | active |
| 720-723 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-724 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-725 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-726 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-727 | BANDWIDTH.COM CLEC, LLC - CO | LONGMONT | VoIP | 656 | active |
| 720-728 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-729 | BANDWIDTH.COM CLEC, LLC - CO | KEENESBURG | VoIP | 656 | active |
| 720-730 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-731 | LEVEL 3 COMMUNICATIONS, LLC - CO | LONGMONT | Landline | 656 | active |
| 720-732 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-733 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-734 | ONVOY, LLC - CO | DENVER | Wireless | 656 | active |
| 720-735 | ONVOY, LLC - CO | KEENESBURG | Landline | 656 | active |
| 720-736 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-737 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-738 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-739 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-740 | HD CARRIER LLC | DECKERS | VoIP | 656 | active |
| 720-741 | ONVOY, LLC - CO | GEORGETOWN | Landline | 656 | active |
| 720-742 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-743 | BANDWIDTH.COM CLEC, LLC - CO | LONGMONT | VoIP | 656 | active |
| 720-744 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-745 | LEVEL 3 COMMUNICATIONS, LLC - CO | LONGMONT | Landline | 656 | active |
| 720-746 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-747 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-748 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-749 | PEERLESS NETWORK OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-750 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-751 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-752 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-753 | NEW CINGULAR WIRELESS PCS, LLC | FORTLUPTON | Wireless | 656 | active |
| 720-754 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-755 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-756 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-757 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-758 | CENTURYLINK COMMUNICATIONS, LLC | DENVER | VoIP | 656 | active |
| 720-759 | BANDWIDTH.COM CLEC, LLC - CO | LONGMONT | Landline | 656 | active |
| 720-760 | TWILIO INTERNATIONAL, INC. | DENVER | VoIP | 656 | active |
| 720-761 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-762 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-763 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-764 | ONVOY, LLC - CO | HUDSON | Landline | 656 | active |
| 720-765 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-766 | FRACTEL, LLC | DENVER | VoIP | 656 | active |
| 720-767 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-768 | COMMIO, LLC | DENVER | Wireless | 656 | active |
| 720-769 | VONAGE AMERICA LLC | DENVER | VoIP | 656 | active |
| 720-770 | BANDWIDTH.COM CLEC, LLC - CO | DECKERS | VoIP | 656 | active |
| 720-771 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-772 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-773 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-774 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-775 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-776 | PEERLESS NETWORK OF COLORADO, LLC - CO | DECKERS | Landline | 656 | active |
| 720-777 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-778 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-779 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-780 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-781 | T-MOBILE USA, INC. | LONGMONT | Wireless | 656 | active |
| 720-782 | AT&T - LOCAL | HUDSON | Landline | 656 | active |
| 720-783 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-784 | ONVOY, LLC - CO | GEORGETOWN | Landline | 656 | active |
| 720-785 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-786 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-787 | METROPCS, INC. | DENVER | Landline | 656 | active |
| 720-788 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-789 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-790 | ONVOY, LLC - CO | ALLNSPKLYN | Landline | 656 | active |
| 720-791 | TELNYX LLC | GEORGETOWN | VoIP | 656 | active |
| 720-792 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-793 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-794 | ONVOY, LLC - CO | ALLNSPKLYN | Landline | 656 | active |
| 720-795 | CENTURYLINK COMMUNICATIONS, LLC | DENVER | VoIP | 656 | active |
| 720-796 | NUSO, LLC | GEORGETOWN | VoIP | 656 | active |
| 720-797 | BANDWIDTH.COM CLEC, LLC - CO | KEENESBURG | VoIP | 656 | active |
| 720-798 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-799 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-800 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-801 | HD CARRIER LLC | GEORGETOWN | VoIP | 656 | active |
| 720-802 | ONVOY, LLC - CO | FORTLUPTON | Landline | 656 | active |
| 720-803 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-804 | T-MOBILE USA, INC. | LONGMONT | VoIP | 656 | active |
| 720-805 | VOIP INNOVATIONS, LLC | DENVER | VoIP | 656 | active |
| 720-806 | PEERLESS NETWORK OF COLORADO, LLC - CO | DECKERS | Landline | 656 | active |
| 720-807 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-808 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-809 | METROPCS, INC. | DENVER | Wireless | 656 | active |
| 720-810 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-812 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-813 | IP HORIZON LLC | DENVER | VoIP | 656 | active |
| 720-814 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DEER TRAIL | Wireless | 656 | active |
| 720-815 | COMCAST IP PHONE, LLC | LONGMONT | VoIP | 656 | active |
| 720-816 | ONVOY SPECTRUM, LLC | ALLNSPKLYN | Wireless | 656 | active |
| 720-817 | COMCAST IP PHONE, LLC | STRASBURG | VoIP | 656 | active |
| 720-818 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | LONGMONT | Wireless | 656 | active |
| 720-819 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-820 | WIDE VOICE, LLC - CO | DENVER | Landline | 656 | active |
| 720-821 | ONVOY, LLC - CO | LONGMONT | Landline | 656 | active |
| 720-822 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-823 | ONVOY, LLC - CO | DENVER | VoIP | 656 | active |
| 720-824 | VONAGE AMERICA LLC | HUDSON | VoIP | 656 | active |
| 720-825 | HD CARRIER LLC | DENVER | VoIP | 656 | active |
| 720-826 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-827 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-828 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-829 | METROPCS, INC. | DENVER | Wireless | 656 | active |
| 720-830 | HD CARRIER LLC | DENVER | VoIP | 656 | active |
| 720-831 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-832 | ONVOY SPECTRUM, LLC | HUDSON | Wireless | 656 | active |
| 720-833 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-834 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-835 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-836 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-837 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-838 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-839 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-840 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-841 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-842 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-843 | ONVOY SPECTRUM, LLC | DENVER | Wireless | 656 | active |
| 720-844 | LEAP TELECOM, LLC | DENVER | VoIP | 656 | active |
| 720-845 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-846 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DEER TRAIL | Wireless | 656 | active |
| 720-847 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-848 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-849 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-850 | FIVE9, INC. | DENVER | VoIP | 656 | active |
| 720-851 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-852 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-853 | BANDWIDTH.COM CLEC, LLC - CO | LONGMONT | VoIP | 656 | active |
| 720-854 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-855 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-856 | ONVOY, LLC - CO | FORTLUPTON | Landline | 656 | active |
| 720-857 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-858 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-859 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-860 | ONVOY SPECTRUM, LLC | DENVER | Wireless | 656 | active |
| 720-861 | BANDWIDTH.COM CLEC, LLC - CO | GEORGETOWN | VoIP | 656 | active |
| 720-862 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-863 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-864 | QWEST CORPORATION | LONGMONT | Landline | 656 | active |
| 720-865 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-866 | TERRA NOVA TELECOM INC. | DENVER | VoIP | 656 | active |
| 720-868 | ONVOY, LLC - CO | FORTLUPTON | Landline | 656 | active |
| 720-869 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-870 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-871 | T-MOBILE USA, INC. | LONGMONT | Wireless | 656 | active |
| 720-872 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-873 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-874 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-875 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-876 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-877 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-878 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-879 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-880 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-881 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-882 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-883 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-884 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-885 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-886 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-887 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-888 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-889 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | DENVER | Landline | 656 | active |
| 720-890 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-891 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-892 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-893 | BANDWIDTH.COM CLEC, LLC - CO | ALLNSPKLYN | VoIP | 656 | active |
| 720-894 | BANDWIDTH.COM CLEC, LLC - CO | DECKERS | VoIP | 656 | active |
| 720-895 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-896 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-897 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-898 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-899 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | LONGMONT | Wireless | 656 | active |
| 720-900 | PEERLESS NETWORK OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-901 | TELNYX LLC | DENVER | VoIP | 656 | active |
| 720-902 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-903 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-904 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-905 | FIVE9, INC. | DENVER | VoIP | 656 | active |
| 720-906 | COMCAST IP PHONE, LLC | BYERS | VoIP | 656 | active |
| 720-907 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-908 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-909 | BANDWIDTH.COM CLEC, LLC - CO | DENVER | VoIP | 656 | active |
| 720-910 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-912 | ONVOY, LLC - CO | DENVER | Landline | 656 | active |
| 720-913 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-914 | T-MOBILE USA, INC. | FORTLUPTON | Wireless | 656 | active |
| 720-915 | VONAGE AMERICA LLC | ALLNSPKLYN | VoIP | 656 | active |
| 720-916 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-917 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-918 | VONAGE AMERICA LLC | KEENESBURG | VoIP | 656 | active |
| 720-919 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-920 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-921 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-922 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-923 | ADVANCED TELECOM SOLUTIONS, LLC | DENVER | VoIP | 656 | active |
| 720-924 | QWEST CORPORATION | DECKERS | Landline | 656 | active |
| 720-925 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-926 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-927 | BANDWIDTH.COM CLEC, LLC - CO | LONGMONT | VoIP | 656 | active |
| 720-928 | BANDWIDTH.COM CLEC, LLC - CO | FORTLUPTON | VoIP | 656 | active |
| 720-929 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-930 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | VoIP | 656 | active |
| 720-931 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-932 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-933 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-934 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-935 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-936 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-937 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-938 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-939 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-940 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-941 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-942 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-943 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-944 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-945 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-946 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-947 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-948 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-949 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-951 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-952 | VONAGE AMERICA LLC | DECKERS | VoIP | 656 | active |
| 720-953 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-954 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | FORTLUPTON | Wireless | 656 | active |
| 720-955 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | DENVER | Wireless | 656 | active |
| 720-956 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-957 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-960 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-961 | LEVEL 3 COMMUNICATIONS, LLC - CO | DENVER | Landline | 656 | active |
| 720-962 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-963 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-964 | T-MOBILE USA, INC. | LONGMONT | Wireless | 656 | active |
| 720-965 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-966 | NEW CINGULAR WIRELESS PCS, LLC | FORTLUPTON | Wireless | 656 | active |
| 720-967 | LEAP TELECOM, LLC | DENVER | VoIP | 656 | active |
| 720-968 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-969 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-970 | BANDWIDTH.COM CLEC, LLC - CO | LONGMONT | VoIP | 656 | active |
| 720-971 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-972 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-973 | HADLO TECHNOLOGIES, LLC | DENVER | VoIP | 656 | active |
| 720-974 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-975 | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | DENVER | Landline | 656 | active |
| 720-977 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-978 | NUSO, LLC | DENVER | VoIP | 656 | active |
| 720-979 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-980 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-981 | QWEST CORPORATION | DENVER | Landline | 656 | active |
| 720-982 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-983 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-984 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-985 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-986 | BANDWIDTH.COM CLEC, LLC - CO | LONGMONT | VoIP | 656 | active |
| 720-987 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-988 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-989 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-990 | LEVEL 3 TELECOM OF COLORADO, LLC - CO | DENVER | Landline | 656 | active |
| 720-991 | COMMIO, LLC | DECKERS | VoIP | 656 | active |
| 720-992 | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | DENVER | VoIP | 656 | active |
| 720-993 | NEW CINGULAR WIRELESS PCS, LLC | DENVER | Wireless | 656 | active |
| 720-994 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
| 720-995 | EON TELECOM, INC. | DENVER | VoIP | 656 | active |
| 720-996 | COMMIO, LLC | DENVER | VoIP | 656 | active |
| 720-997 | COMCAST IP PHONE, LLC | BENNETT | VoIP | 656 | active |
| 720-998 | COMCAST IP PHONE, LLC | DENVER | VoIP | 656 | active |
| 720-999 | T-MOBILE USA, INC. | DENVER | Wireless | 656 | active |
Related Area Codes
Area code 720 shares its geographic region with the following overlay area codes: