Reference Data
Area Code Directory
Area Code 312 — Chicago, Elgin, Burr Ridge, Illinois

Area Code 312 — Chicago, Elgin, Burr Ridge, Illinois

Active

Data last updated: March 10, 2026

State
Illinois
Country
US
Timezone
America/Chicago
Assigned
February 14, 2001
Exchanges (NXX)
786
Carriers
38
Rate Centers
8
Overlay
Yes — 872

Top Carriers

Carrier OCN NXX Count
ILLINOIS BELL TEL CO 9329 334
NEW CINGULAR WIRELESS PCS, LLC - IL 6534 82
T-MOBILE USA, INC. 6529 60
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 54
SPOK, INC. 6630 34
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 32
LEVEL 3 COMMUNICATIONS, LLC - IL 6115 31
TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 22
ONVOY, LLC 224C 20
AMERICAN MESSAGING SERVICES, LLC 9748 14

Rate Centers

CHICGOZN01 NORTHBROOK WHEELING ROSELLE CHICGOZN07 LA GRANGE HINSDALE CHICGOZN04

Exchange Listings (NXX)

NPA-NXX Carrier Rate Center Type LATA Status
312-200 METROPCS, INC. CHICGOZN01 Wireless 358 active
312-201 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-202 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-203 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-204 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-205 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-206 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-207 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-208 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-209 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL NORTHBROOK Wireless 358 active
312-210 PEERLESS NETWORK OF ILLINOIS, LLC - IL CHICGOZN01 Landline 358 active
312-212 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-213 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-214 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-215 NEW CINGULAR WIRELESS PCS, LLC - IL WHEELING Wireless 358 active
312-216 FIRST COMMUNICATIONS, LLC CHICGOZN01 VoIP 358 active
312-217 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-218 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-219 BANDWIDTH.COM CLEC, LLC - IL CHICGOZN01 VoIP 358 active
312-220 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-221 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-222 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-223 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-224 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-225 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-226 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-227 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-228 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-229 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-230 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-231 NEW CINGULAR WIRELESS PCS, LLC - IL ROSELLE Wireless 358 active
312-232 AMERICAN MESSAGING SERVICES, LLC CHICGOZN01 Landline 358 active
312-233 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-234 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-235 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-236 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-237 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-238 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-239 AT&T - LOCAL CHICGOZN01 Landline 358 active
312-240 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-241 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-242 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 Landline 358 active
312-243 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-244 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-245 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-246 NEW CINGULAR WIRELESS PCS, LLC - IL WHEELING Wireless 358 active
312-247 FIRST COMMUNICATIONS, LLC CHICGOZN01 VoIP 358 active
312-248 METROPCS, INC. CHICGOZN01 Wireless 358 active
312-249 SPOK, INC. CHICGOZN01 Landline 358 active
312-250 SPOK, INC. CHICGOZN01 Landline 358 active
312-251 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-252 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-253 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-254 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-255 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-256 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-257 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-258 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-259 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-260 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-261 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-262 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-263 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-264 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-265 ACCESS ONE, INC. - IL CHICGOZN01 Landline 358 active
312-266 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-267 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-268 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-269 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-270 METROPCS, INC. CHICGOZN01 Wireless 358 active
312-271 SPOK, INC. CHICGOZN01 Landline 358 active
312-272 SPOK, INC. CHICGOZN01 Landline 358 active
312-273 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-274 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-275 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-276 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-277 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-278 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-280 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-281 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-282 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-283 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-284 XO ILLINOIS, INC. CHICGOZN01 Landline 358 active
312-285 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-286 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-287 T-MOBILE USA, INC. CHICGOZN07 Wireless 358 active
312-288 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-289 SPOK, INC. CHICGOZN01 Landline 358 active
312-290 SPOK, INC. CHICGOZN01 Landline 358 active
312-291 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-292 BANDWIDTH.COM CLEC, LLC - IL CHICGOZN01 VoIP 358 active
312-293 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-294 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-295 SPOK, INC. LA GRANGE Landline 358 active
312-296 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-297 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-298 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL CHICGOZN01 Landline 358 active
312-299 SPOK, INC. CHICGOZN01 Landline 358 active
312-300 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-301 NEW CINGULAR WIRELESS PCS, LLC - IL HINSDALE Wireless 358 active
312-302 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-303 NEW CINGULAR WIRELESS PCS, LLC - IL WHEELING Wireless 358 active
312-304 NEW CINGULAR WIRELESS PCS, LLC - IL HINSDALE Wireless 358 active
312-305 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL NORTHBROOK Wireless 358 active
312-306 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-307 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-308 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-309 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-310 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL NORTHBROOK Wireless 358 active
312-312 ONVOY, LLC CHICGOZN01 Landline 358 active
312-313 ONVOY, LLC CHICGOZN01 Landline 358 active
312-314 NEW CINGULAR WIRELESS PCS, LLC - IL HINSDALE Wireless 358 active
312-315 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-316 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-317 NEW CINGULAR WIRELESS PCS, LLC - IL WHEELING Wireless 358 active
312-318 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL LA GRANGE Wireless 358 active
312-319 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-320 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-321 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-322 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-323 AMERICAN MESSAGING SERVICES, LLC CHICGOZN01 Landline 358 active
312-324 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-325 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-326 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-327 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-328 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-329 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-330 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-331 NEW CINGULAR WIRELESS PCS, LLC - IL WHEELING Wireless 358 active
312-332 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-333 AMERICAN MESSAGING SERVICES, LLC CHICGOZN01 Landline 358 active
312-334 FIRST COMMUNICATIONS, LLC CHICGOZN01 VoIP 358 active
312-335 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-336 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-337 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-338 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-339 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-340 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-341 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-342 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-343 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-344 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-345 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-346 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-347 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-348 ONVOY, LLC CHICGOZN01 Landline 358 active
312-349 SPOK, INC. CHICGOZN01 Landline 358 active
312-350 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-351 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-352 NEW CINGULAR WIRELESS PCS, LLC - IL HINSDALE Wireless 358 active
312-353 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-354 NEW CINGULAR WIRELESS PCS, LLC - IL ROSELLE Wireless 358 active
312-355 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-356 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-357 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-358 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-359 SPOK, INC. CHICGOZN01 Landline 358 active
312-360 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-361 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-362 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-363 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL CHICGOZN01 Landline 358 active
312-364 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-365 SPOK, INC. CHICGOZN01 Landline 358 active
312-366 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-367 SPOK, INC. LA GRANGE Landline 358 active
312-368 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-369 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-370 SPOK, INC. CHICGOZN01 Landline 358 active
312-371 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-372 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-373 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-374 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-375 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-376 ONVOY, LLC CHICGOZN01 Landline 358 active
312-377 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-378 SPOK, INC. CHICGOZN01 Landline 358 active
312-379 PAETEC ITEL, LLC CHICGOZN01 VoIP 358 active
312-380 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-381 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-382 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-383 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 Landline 358 active
312-384 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-385 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-386 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-387 SPOK, INC. CHICGOZN01 Landline 358 active
312-388 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-389 SPOK, INC. CHICGOZN01 Landline 358 active
312-390 AMERICAN MESSAGING SERVICES, LLC CHICGOZN01 Landline 358 active
312-391 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-392 ONVOY, LLC CHICGOZN01 Landline 358 active
312-393 AMERICAN MESSAGING SERVICES, LLC CHICGOZN01 Landline 358 active
312-394 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-395 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 VoIP 358 active
312-396 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-397 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-398 SPOK, INC. CHICGOZN01 Landline 358 active
312-399 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-400 AMERICAN MESSAGING SERVICES, LLC CHICGOZN01 Landline 358 active
312-401 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-402 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-403 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL LA GRANGE Wireless 358 active
312-404 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-405 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-406 NEW CINGULAR WIRELESS PCS, LLC - IL WHEELING Wireless 358 active
312-407 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-408 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-409 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-410 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-412 NEW CINGULAR WIRELESS PCS, LLC - IL WHEELING Wireless 358 active
312-413 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-414 VONAGE AMERICA LLC CHICGOZN01 VoIP 358 active
312-415 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-416 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL CHICGOZN01 Landline 358 active
312-417 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-418 SPOK, INC. CHICGOZN01 Landline 358 active
312-419 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-420 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-421 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-422 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-423 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-424 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-425 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-426 ONVOY, LLC CHICGOZN01 Landline 358 active
312-427 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-428 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-429 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-430 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-431 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-432 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-433 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-434 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-435 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-436 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-437 METROPCS, INC. CHICGOZN01 Wireless 358 active
312-438 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-439 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-440 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-441 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-442 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-443 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-444 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-445 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-446 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-447 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-448 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-449 WAVENATION, LLC CHICGOZN01 VoIP 358 active
312-450 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-451 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-452 ONVOY SPECTRUM, LLC CHICGOZN01 Wireless 358 active
312-453 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL CHICGOZN01 Landline 358 active
312-454 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-455 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-456 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-457 AMERICAN MESSAGING SERVICES, LLC CHICGOZN01 Landline 358 active
312-458 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-459 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-460 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-461 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-462 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-463 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-464 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-465 PAETEC ITEL, LLC CHICGOZN01 VoIP 358 active
312-466 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-467 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-468 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-469 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-470 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-471 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-472 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-473 ONVOY, LLC CHICGOZN01 Landline 358 active
312-474 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-475 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-476 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-477 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-478 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-479 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 VoIP 358 active
312-480 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-481 METROPCS, INC. CHICGOZN01 Wireless 358 active
312-482 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-483 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-484 SPOK, INC. CHICGOZN01 Landline 358 active
312-485 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-486 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL CHICGOZN01 Landline 358 active
312-487 METROPCS, INC. CHICGOZN01 Wireless 358 active
312-488 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-489 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-490 SPOK, INC. CHICGOZN01 Landline 358 active
312-491 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-492 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-493 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-494 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-495 SPOK, INC. CHICGOZN01 Landline 358 active
312-496 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-497 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-498 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-499 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-500 ONVOY, LLC CHICGOZN01 Landline 358 active
312-501 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL LA GRANGE Wireless 358 active
312-502 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-503 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 Landline 358 active
312-504 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-506 FIRST COMMUNICATIONS, LLC CHICGOZN01 VoIP 358 active
312-507 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-508 PEERLESS NETWORK OF ILLINOIS, LLC - IL CHICGOZN01 Landline 358 active
312-509 PEERLESS NETWORK OF ILLINOIS, LLC - IL CHICGOZN01 Landline 358 active
312-510 NEW CINGULAR WIRELESS PCS, LLC - IL HINSDALE Wireless 358 active
312-512 SPOK, INC. CHICGOZN01 Landline 358 active
312-513 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-514 AMERICAN MESSAGING SERVICES, LLC CHICGOZN01 Landline 358 active
312-515 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-516 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-517 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
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312-523 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
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312-527 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-536 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-537 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-538 METROPCS, INC. CHICGOZN01 Wireless 358 active
312-539 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-540 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-541 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-542 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-543 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
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312-553 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-554 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-556 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-557 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-558 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-569 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-573 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-645 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-649 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-654 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-655 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-656 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-657 SPOK, INC. CHICGOZN01 Landline 358 active
312-658 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-659 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-660 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 Landline 358 active
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312-662 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-663 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-664 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-670 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-671 METROPCS, INC. CHICGOZN01 Wireless 358 active
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312-673 FIRST COMMUNICATIONS, LLC CHICGOZN01 VoIP 358 active
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312-675 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-676 FIRST COMMUNICATIONS, LLC CHICGOZN01 VoIP 358 active
312-677 SPOK, INC. CHICGOZN01 Landline 358 active
312-678 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-679 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS CHICGOZN01 Landline active
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312-681 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-682 NUSO, LLC CHICGOZN01 VoIP 358 active
312-683 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-685 METROPCS, INC. CHICGOZN01 Wireless 358 active
312-686 PEERLESS NETWORK OF ILLINOIS, LLC - IL CHICGOZN01 Landline 358 active
312-687 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-688 SPOK, INC. CHICGOZN01 Landline 358 active
312-689 AMERICAN MESSAGING SERVICES, LLC CHICGOZN01 Landline 358 active
312-690 RCLEC, INC. CHICGOZN01 VoIP 358 active
312-691 INDIANA PAGING NETWORK, INC. CHICGOZN01 Landline 358 active
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312-693 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-694 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-695 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-704 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-705 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 Landline 358 active
312-706 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 Landline 358 active
312-707 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-708 ONVOY SPECTRUM, LLC CHICGOZN01 Wireless 358 active
312-709 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-710 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-712 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-713 AMERICAN MESSAGING SERVICES, LLC CHICGOZN01 Landline 358 active
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312-715 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-717 SPOK, INC. LA GRANGE Landline 358 active
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312-719 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-720 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-721 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-722 PAETEC ITEL, LLC CHICGOZN01 VoIP 358 active
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312-730 AT&T - LOCAL CHICGOZN01 Landline 358 active
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312-732 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-733 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-734 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 Landline 358 active
312-735 T-MOBILE USA, INC. CHICGOZN04 Wireless 358 active
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312-745 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-746 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-761 TELENGY LLC CHICGOZN01 VoIP 358 active
312-762 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-771 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-772 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-773 ONVOY SPECTRUM, LLC CHICGOZN01 Wireless 358 active
312-774 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-775 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-776 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-777 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 Landline 358 active
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312-779 ONVOY, LLC CHICGOZN01 Landline 358 active
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312-785 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
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312-787 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-788 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-789 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-790 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-791 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-792 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-793 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-794 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL CHICGOZN01 Landline 358 active
312-795 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-796 PEERLESS NETWORK OF ILLINOIS, LLC - IL CHICGOZN01 Landline 358 active
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312-798 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-799 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-800 PEERLESS NETWORK OF ILLINOIS, LLC - IL CHICGOZN01 Landline 358 active
312-801 NUSO, LLC CHICGOZN01 Wireless 358 active
312-802 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-803 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL CHICGOZN01 Landline 358 active
312-804 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-805 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-806 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
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312-808 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-809 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-810 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-812 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-813 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-814 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-815 AIRESPRING, INC. CHICGOZN01 VoIP 358 active
312-816 NEW CINGULAR WIRELESS PCS, LLC - IL HINSDALE Wireless 358 active
312-817 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-818 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-819 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-820 ONVOY, LLC CHICGOZN01 Landline 358 active
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312-823 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-824 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-825 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-826 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-827 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-828 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-829 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-830 SPOK, INC. CHICGOZN01 Landline 358 active
312-831 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-832 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
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312-835 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-836 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-837 COMCAST IP PHONE, LLC CHICGOZN01 VoIP 358 active
312-838 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-839 AMERICAN MESSAGING SERVICES, LLC CHICGOZN01 Landline 358 active
312-840 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-841 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-842 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-843 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 Landline 358 active
312-844 NEW CINGULAR WIRELESS PCS, LLC - IL HINSDALE Wireless 358 active
312-845 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-846 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-847 ONVOY, LLC CHICGOZN01 Landline 358 active
312-848 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-849 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-850 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-851 SPOK, INC. CHICGOZN01 Landline 358 active
312-852 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-853 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-854 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL CHICGOZN01 Landline 358 active
312-855 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-856 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-857 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-858 RCLEC, INC. CHICGOZN01 VoIP 358 active
312-859 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-860 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-861 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-862 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-863 PAETEC ITEL, LLC CHICGOZN01 VoIP 358 active
312-864 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-865 NEW CINGULAR WIRELESS PCS, LLC - IL WHEELING Wireless 358 active
312-866 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-867 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-868 BANDWIDTH.COM CLEC, LLC - IL CHICGOZN01 VoIP 358 active
312-869 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-870 FIRST COMMUNICATIONS, LLC CHICGOZN01 VoIP 358 active
312-871 T-MOBILE USA, INC. CHICGOZN01 Landline 358 active
312-872 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-873 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL CHICGOZN01 Landline 358 active
312-874 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-875 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-876 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-877 AT&T ENTERPRISES, LLC CHICGOZN01 VoIP 358 active
312-878 PEERLESS NETWORK OF ILLINOIS, LLC - IL CHICGOZN01 Landline 358 active
312-879 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-880 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-881 PAETEC ITEL, LLC CHICGOZN01 VoIP 358 active
312-882 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-883 BANDWIDTH.COM CLEC, LLC - IL CHICGOZN01 VoIP 358 active
312-884 PAETEC ITEL, LLC CHICGOZN01 VoIP 358 active
312-885 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-886 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-887 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-888 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-889 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 Landline 358 active
312-890 METROPCS, INC. CHICGOZN01 Wireless 358 active
312-891 SPOK, INC. CHICGOZN01 Landline 358 active
312-892 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 VoIP 358 active
312-893 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-894 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-895 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-896 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-897 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-898 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-899 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-900 FRACTEL, LLC CHICGOZN01 VoIP 358 active
312-901 SPOK, INC. CHICGOZN01 Landline 358 active
312-902 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-903 AMERICAN MESSAGING SERVICES, LLC CHICGOZN01 Landline 358 active
312-904 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-905 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-906 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-907 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-908 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-909 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-910 ONVOY, LLC CHICGOZN01 Landline 358 active
312-912 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-913 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-914 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-915 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-916 Landline active
312-917 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-918 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-919 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-920 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-921 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-922 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-923 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-924 PAETEC ITEL, LLC CHICGOZN01 VoIP 358 active
312-925 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-926 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-927 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-928 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-929 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-930 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-931 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-932 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-933 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-934 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-935 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-936 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-937 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-938 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-939 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-940 PEERLESS NETWORK OF ILLINOIS, LLC - IL CHICGOZN01 Landline 358 active
312-941 SPOK, INC. CHICGOZN01 Landline 358 active
312-942 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-943 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-944 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-945 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-946 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-947 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-948 PAETEC ITEL, LLC CHICGOZN01 VoIP 358 active
312-949 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-951 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-952 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-953 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-954 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-955 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL CHICGOZN01 Landline 358 active
312-956 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-957 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-960 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-961 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-962 LEVEL 3 COMMUNICATIONS, LLC - IL CHICGOZN01 Landline 358 active
312-963 SPOK, INC. CHICGOZN01 Landline 358 active
312-964 ONVOY, LLC CHICGOZN01 Landline 358 active
312-965 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL CHICGOZN01 Wireless 358 active
312-966 METROPCS, INC. CHICGOZN01 Wireless 358 active
312-967 BANDWIDTH.COM CLEC, LLC - IL CHICGOZN01 VoIP 358 active
312-968 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL LA GRANGE Wireless 358 active
312-969 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL LA GRANGE Wireless 358 active
312-970 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-971 BANDWIDTH.COM CLEC, LLC - IL CHICGOZN01 VoIP 358 active
312-972 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-973 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active
312-974 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-975 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-977 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-978 T-MOBILE USA, INC. CHICGOZN01 Wireless 358 active
312-979 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-980 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 Landline 358 active
312-981 PAETEC ITEL, LLC CHICGOZN01 VoIP 358 active
312-982 COMCAST IP PHONE, LLC CHICGOZN01 VoIP 358 active
312-983 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-984 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-985 PAETEC ITEL, LLC CHICGOZN01 VoIP 358 active
312-986 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-987 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-988 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-989 NEW CINGULAR WIRELESS PCS, LLC - IL CHICGOZN01 Wireless 358 active
312-990 NEW CINGULAR WIRELESS PCS, LLC - IL HINSDALE Wireless 358 active
312-991 NEW CINGULAR WIRELESS PCS, LLC - IL WHEELING Wireless 358 active
312-992 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-993 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-994 PAETEC ITEL, LLC CHICGOZN01 VoIP 358 active
312-995 TELEPORT COMMUNICATIONS AMERICA, LLC - IL CHICGOZN01 Landline 358 active
312-996 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-997 ILLINOIS BELL TEL CO CHICGOZN01 Landline 358 active
312-998 CENTURYLINK COMMUNICATIONS, LLC CHICGOZN01 VoIP 358 active
312-999 MCIMETRO ACCESS TRANSMISSION SERVICES LLC CHICGOZN01 Landline 358 active

Area code 312 shares its geographic region with the following overlay area codes:

872