Illinois
Area code 312
Area code 312 covers Chicago, Wheeling, Hinsdale, La Grange, Northbrook and more in Illinois, in the Central time zone. It has been in service since 1947. It shares its area with 872 (an overlay).
WhereIllinois
Time zoneCentral
Exchanges784
Flagged numbers100548 complaints
Most reported 312 numbers
(312) 757-3601CautionPolitical(312) 757-3649CautionPolitical(312) 757-3620CautionPolitical(312) 757-3629CautionPolitical(312) 757-3647CautionPolitical(312) 757-3587CautionPolitical(312) 757-3612CautionPolitical(312) 757-3637CautionPolitical(312) 757-3586CautionPolitical(312) 339-1227CautionPrizes / sweepstakes(312) 653-2073CautionHealth insurance(312) 757-3615Caution(312) 820-3851Caution(312) 757-3617Caution(312) 757-3641CautionPolitical(312) 757-3591CautionPolitical(312) 626-4648Caution(312) 680-8451CautionPolitical(312) 757-3616CautionPolitical(312) 312-7195CautionPrizes / sweepstakes(312) 757-3609CautionPolitical(312) 757-3618CautionPolitical(312) 757-3622CautionPolitical(312) 757-3619CautionPolitical
Carriers in 312
Line types
Counted over the exchanges, from the carrier each was assigned to.
Cities in area code 312
ChicagoWheelingHinsdaleLa GrangeNorthbrookRoselle
Every 312 exchange
The first six digits of a number. Each one with 3 or more flagged numbers has its own page: who it was assigned to and the numbers in it.
| Exchange | City | Carrier | Type | Flagged |
|---|---|---|---|---|
| 312-200 | Chicago | T-Mobile (Metro) | Wireless | 0 |
| 312-201 | Chicago | AT&T | Landline | 0 |
| 312-202 | Chicago | AT&T | Landline | 0 |
| 312-203 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-204 | Chicago | AT&T | Landline | 0 |
| 312-205 | Chicago | Verizon Business | VoIP | 0 |
| 312-206 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-207 | Chicago | AT&T | Landline | 0 |
| 312-208 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-209 | Northbrook | Verizon Wireless | Wireless | 1 |
| 312-210 | Chicago | Peerless Network | VoIP | 0 |
| 312-212 | Chicago | AT&T | Landline | 0 |
| 312-213 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-214 | Chicago | AT&T | Landline | 0 |
| 312-215 | Wheeling | AT&T Mobility | Wireless | 0 |
| 312-216 | Chicago | First Communications | Landline | 0 |
| 312-217 | Chicago | T-Mobile | Wireless | 0 |
| 312-218 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-219 | Chicago | Bandwidth | VoIP | 0 |
| 312-220 | Chicago | AT&T | Landline | 0 |
| 312-221 | Chicago | T-Mobile | Wireless | 0 |
| 312-222 | Chicago | AT&T | Landline | 0 |
| 312-223 | Chicago | AT&T | Landline | 0 |
| 312-224 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-225 | Chicago | AT&T | Landline | 0 |
| 312-226 | Chicago | AT&T | Landline | 0 |
| 312-227 | Chicago | AT&T | Landline | 0 |
| 312-228 | Chicago | AT&T | Landline | 0 |
| 312-229 | Chicago | AT&T | Landline | 0 |
| 312-230 | Chicago | AT&T | Landline | 0 |
| 312-231 | Roselle | AT&T Mobility | Wireless | 0 |
| 312-232 | Chicago | American Messaging Services | Landline | 0 |
| 312-233 | Chicago | AT&T | Landline | 0 |
| 312-234 | Chicago | AT&T | Landline | 0 |
| 312-235 | Chicago | AT&T | Landline | 0 |
| 312-236 | Chicago | AT&T | Landline | 0 |
| 312-237 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-238 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-239 | Chicago | AT&T | Landline | 0 |
| 312-240 | Chicago | AT&T | Landline | 0 |
| 312-241 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-242 | Chicago | AT&T | VoIP | 0 |
| 312-243 | Chicago | AT&T | Landline | 0 |
| 312-244 | Chicago | AT&T | Landline | 0 |
| 312-245 | Chicago | AT&T | Landline | 0 |
| 312-246 | Wheeling | AT&T Mobility | Wireless | 0 |
| 312-247 | Chicago | First Communications | Landline | 0 |
| 312-248 | Chicago | T-Mobile (Metro) | Wireless | 0 |
| 312-249 | Chicago | Spok (paging) | Pager | 0 |
| 312-250 | Chicago | Spok (paging) | Pager | 0 |
| 312-251 | Chicago | AT&T | Landline | 0 |
| 312-252 | Chicago | Verizon Business | VoIP | 0 |
| 312-253 | Chicago | Verizon Business | VoIP | 0 |
| 312-254 | Chicago | Verizon Business | VoIP | 0 |
| 312-255 | Chicago | AT&T | Landline | 0 |
| 312-256 | Chicago | Verizon Business | VoIP | 0 |
| 312-257 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-258 | Chicago | AT&T | Landline | 0 |
| 312-259 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-260 | Chicago | Verizon Business | VoIP | 1 |
| 312-261 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-262 | Chicago | Verizon Business | VoIP | 0 |
| 312-263 | Chicago | AT&T | Landline | 0 |
| 312-264 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-265 | Chicago | Access One | Landline | 0 |
| 312-266 | Chicago | AT&T | Landline | 0 |
| 312-267 | Chicago | AT&T | Landline | 0 |
| 312-268 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-269 | Chicago | AT&T | Landline | 0 |
| 312-270 | Chicago | T-Mobile (Metro) | Wireless | 0 |
| 312-271 | Chicago | Spok (paging) | Pager | 0 |
| 312-272 | Chicago | Spok (paging) | Pager | 0 |
| 312-273 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-274 | Chicago | AT&T | Landline | 0 |
| 312-275 | Chicago | Verizon Business | VoIP | 0 |
| 312-276 | Chicago | Verizon Business | VoIP | 0 |
| 312-277 | Chicago | Verizon Business | VoIP | 0 |
| 312-278 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-279 | Chicago | Verizon Business | VoIP | 0 |
| 312-280 | Chicago | AT&T | Landline | 0 |
| 312-281 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-282 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-283 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-284 | Chicago | Xo Illinois | Landline | 0 |
| 312-285 | Chicago | T-Mobile | Wireless | 0 |
| 312-286 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-287 | Chicago | T-Mobile | Wireless | 0 |
| 312-288 | Chicago | Verizon Business | VoIP | 0 |
| 312-289 | Chicago | Spok (paging) | Pager | 0 |
| 312-290 | Chicago | Spok (paging) | Pager | 0 |
| 312-291 | Chicago | AT&T | Landline | 0 |
| 312-292 | Chicago | Bandwidth | VoIP | 0 |
| 312-293 | Chicago | AT&T | Landline | 0 |
| 312-294 | Chicago | AT&T | Landline | 0 |
| 312-295 | La Grange | Spok (paging) | Pager | 0 |
| 312-296 | Chicago | T-Mobile | Wireless | 0 |
| 312-297 | Chicago | AT&T | Landline | 0 |
| 312-298 | Chicago | Rcn Telecom Services of Illinios | Landline | 0 |
| 312-299 | Chicago | Spok (paging) | Pager | 0 |
| 312-300 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-301 | Hinsdale | AT&T Mobility | Wireless | 0 |
| 312-302 | Chicago | AT&T | Landline | 0 |
| 312-303 | Wheeling | AT&T Mobility | Wireless | 0 |
| 312-304 | Hinsdale | AT&T Mobility | Wireless | 0 |
| 312-305 | Northbrook | Verizon Wireless | Wireless | 0 |
| 312-306 | Chicago | AT&T | Landline | 0 |
| 312-307 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-308 | Chicago | AT&T | Landline | 0 |
| 312-309 | Chicago | AT&T | Landline | 0 |
| 312-310 | Northbrook | Verizon Wireless | Wireless | 0 |
| 312-312 | Chicago | Onvoy (Sinch) | VoIP | 1 |
| 312-313 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-314 | Hinsdale | AT&T Mobility | Wireless | 0 |
| 312-315 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-316 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-317 | Wheeling | AT&T Mobility | Wireless | 0 |
| 312-318 | La Grange | Verizon Wireless | Wireless | 0 |
| 312-319 | Chicago | Verizon Business | VoIP | 0 |
| 312-320 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-321 | Chicago | AT&T | Landline | 0 |
| 312-322 | Chicago | AT&T | Landline | 0 |
| 312-323 | Chicago | American Messaging Services | Landline | 0 |
| 312-324 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-325 | Chicago | AT&T | Landline | 0 |
| 312-326 | Chicago | AT&T | Landline | 0 |
| 312-327 | Chicago | Verizon Business | VoIP | 0 |
| 312-328 | Chicago | AT&T | Landline | 0 |
| 312-329 | Chicago | AT&T | Landline | 0 |
| 312-330 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-331 | Wheeling | AT&T Mobility | Wireless | 0 |
| 312-332 | Chicago | AT&T | Landline | 0 |
| 312-333 | Chicago | American Messaging Services | Landline | 0 |
| 312-334 | Chicago | First Communications | Landline | 0 |
| 312-335 | Chicago | AT&T | Landline | 0 |
| 312-336 | Chicago | AT&T | Landline | 0 |
| 312-337 | Chicago | AT&T | Landline | 0 |
| 312-338 | Chicago | AT&T | Landline | 0 |
| 312-339 | Chicago | Verizon Wireless | Wireless | 1 |
| 312-340 | Chicago | T-Mobile | Wireless | 0 |
| 312-341 | Chicago | AT&T | Landline | 0 |
| 312-342 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-343 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-344 | Chicago | AT&T | Landline | 0 |
| 312-345 | Chicago | AT&T | Landline | 0 |
| 312-346 | Chicago | AT&T | Landline | 0 |
| 312-347 | Chicago | AT&T | Landline | 0 |
| 312-348 | Chicago | Onvoy (Sinch) | VoIP | 1 |
| 312-349 | Chicago | Spok (paging) | Pager | 0 |
| 312-350 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-351 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-352 | Hinsdale | AT&T Mobility | Wireless | 0 |
| 312-353 | Chicago | AT&T | Landline | 0 |
| 312-354 | Roselle | AT&T Mobility | Wireless | 0 |
| 312-355 | Chicago | AT&T | Landline | 0 |
| 312-356 | Chicago | AT&T | Landline | 0 |
| 312-357 | Chicago | AT&T | Landline | 0 |
| 312-358 | Chicago | T-Mobile | Wireless | 0 |
| 312-359 | Chicago | Spok (paging) | Pager | 0 |
| 312-360 | Chicago | AT&T | Landline | 0 |
| 312-361 | Chicago | AT&T | Landline | 0 |
| 312-362 | Chicago | AT&T | Landline | 0 |
| 312-363 | Chicago | Rcn Telecom Services of Illinios | Landline | 0 |
| 312-364 | Chicago | AT&T | Landline | 0 |
| 312-365 | Chicago | Spok (paging) | Pager | 0 |
| 312-366 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-367 | La Grange | Spok (paging) | Pager | 0 |
| 312-368 | Chicago | AT&T | Landline | 0 |
| 312-369 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-370 | Chicago | Spok (paging) | Pager | 0 |
| 312-371 | Chicago | T-Mobile | Wireless | 0 |
| 312-372 | Chicago | AT&T | Landline | 0 |
| 312-373 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-374 | Chicago | AT&T | Landline | 0 |
| 312-375 | Chicago | T-Mobile | Wireless | 0 |
| 312-376 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-377 | Chicago | Verizon Business | VoIP | 0 |
| 312-378 | Chicago | Spok (paging) | Pager | 0 |
| 312-379 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-380 | Chicago | AT&T | Landline | 2 |
| 312-381 | Chicago | AT&T | Landline | 0 |
| 312-382 | Chicago | AT&T | Landline | 0 |
| 312-383 | Chicago | AT&T | VoIP | 0 |
| 312-384 | Chicago | AT&T | Landline | 0 |
| 312-385 | Chicago | AT&T | Landline | 0 |
| 312-386 | Chicago | AT&T | Landline | 0 |
| 312-387 | Chicago | Spok (paging) | Pager | 0 |
| 312-388 | Chicago | T-Mobile | Wireless | 0 |
| 312-389 | Chicago | Spok (paging) | Pager | 0 |
| 312-390 | Chicago | American Messaging Services | Landline | 0 |
| 312-391 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-392 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-393 | Chicago | American Messaging Services | Landline | 0 |
| 312-394 | Chicago | AT&T | Landline | 0 |
| 312-395 | Chicago | AT&T | VoIP | 0 |
| 312-396 | Chicago | AT&T | Landline | 0 |
| 312-397 | Chicago | AT&T | Landline | 0 |
| 312-398 | Chicago | Spok (paging) | Pager | 0 |
| 312-399 | Chicago | T-Mobile | Wireless | 0 |
| 312-400 | Chicago | American Messaging Services | Landline | 0 |
| 312-401 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-402 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-403 | La Grange | Verizon Wireless | Wireless | 0 |
| 312-404 | Chicago | T-Mobile | Wireless | 0 |
| 312-405 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-406 | Wheeling | AT&T Mobility | Wireless | 0 |
| 312-407 | Chicago | AT&T | Landline | 0 |
| 312-408 | Chicago | AT&T | Landline | 0 |
| 312-409 | Chicago | AT&T | Landline | 0 |
| 312-410 | Chicago | AT&T | Landline | 0 |
| 312-412 | Wheeling | AT&T Mobility | Wireless | 0 |
| 312-413 | Chicago | AT&T | Landline | 0 |
| 312-414 | Chicago | Vonage | VoIP | 0 |
| 312-415 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-416 | Chicago | Verizon Business | VoIP | 0 |
| 312-417 | Chicago | AT&T | Landline | 0 |
| 312-418 | Chicago | Spok (paging) | Pager | 0 |
| 312-419 | Chicago | AT&T | Landline | 0 |
| 312-420 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-421 | Chicago | AT&T | Landline | 0 |
| 312-422 | Chicago | AT&T | Landline | 0 |
| 312-423 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-424 | Chicago | AT&T | Landline | 0 |
| 312-425 | Chicago | AT&T | Landline | 0 |
| 312-426 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-427 | Chicago | AT&T | Landline | 0 |
| 312-428 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-429 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-430 | Chicago | AT&T | Landline | 0 |
| 312-431 | Chicago | AT&T | Landline | 0 |
| 312-432 | Chicago | AT&T | Landline | 0 |
| 312-433 | Chicago | AT&T | Landline | 0 |
| 312-434 | Chicago | T-Mobile | Wireless | 0 |
| 312-435 | Chicago | AT&T | Landline | 0 |
| 312-436 | Chicago | AT&T | Landline | 0 |
| 312-437 | Chicago | T-Mobile | Wireless | 0 |
| 312-438 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-439 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-440 | Chicago | AT&T | Landline | 0 |
| 312-441 | Chicago | AT&T | Landline | 0 |
| 312-442 | Chicago | AT&T | Landline | 0 |
| 312-443 | Chicago | AT&T | Landline | 0 |
| 312-444 | Chicago | AT&T | Landline | 0 |
| 312-445 | Chicago | AT&T | Landline | 0 |
| 312-446 | Chicago | T-Mobile | Wireless | 0 |
| 312-447 | Chicago | AT&T | Landline | 0 |
| 312-448 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-449 | Chicago | Wavenation | Landline | 0 |
| 312-450 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-451 | Chicago | T-Mobile | Wireless | 0 |
| 312-452 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-453 | Chicago | Verizon Business | VoIP | 0 |
| 312-454 | Chicago | AT&T | Landline | 0 |
| 312-455 | Chicago | AT&T | Landline | 0 |
| 312-456 | Chicago | AT&T | Landline | 0 |
| 312-457 | Chicago | American Messaging Services | Landline | 0 |
| 312-458 | Chicago | AT&T | Landline | 0 |
| 312-459 | Chicago | T-Mobile | Wireless | 0 |
| 312-460 | Chicago | AT&T | Landline | 1 |
| 312-461 | Chicago | AT&T | Landline | 0 |
| 312-462 | Chicago | AT&T | Landline | 0 |
| 312-463 | Chicago | AT&T | Landline | 0 |
| 312-464 | Chicago | AT&T | Landline | 0 |
| 312-465 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-466 | Chicago | AT&T | Landline | 0 |
| 312-467 | Chicago | AT&T | Landline | 0 |
| 312-468 | Chicago | T-Mobile | Wireless | 0 |
| 312-469 | Chicago | AT&T | Landline | 0 |
| 312-470 | Chicago | Verizon Business | VoIP | 0 |
| 312-471 | Chicago | Verizon Business | VoIP | 0 |
| 312-472 | Chicago | AT&T | Landline | 0 |
| 312-473 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-474 | Chicago | AT&T | Landline | 0 |
| 312-475 | Chicago | AT&T | Landline | 0 |
| 312-476 | Chicago | T-Mobile | Wireless | 0 |
| 312-477 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-478 | Chicago | T-Mobile | Wireless | 0 |
| 312-479 | Chicago | AT&T | VoIP | 0 |
| 312-480 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-481 | Chicago | T-Mobile (Metro) | Wireless | 0 |
| 312-482 | Chicago | AT&T | Landline | 0 |
| 312-483 | Chicago | T-Mobile | Wireless | 0 |
| 312-484 | Chicago | Spok (paging) | Pager | 0 |
| 312-485 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-486 | Chicago | Verizon Business | VoIP | 0 |
| 312-487 | Chicago | T-Mobile (Metro) | Wireless | 0 |
| 312-488 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-489 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-490 | Chicago | Spok (paging) | Pager | 0 |
| 312-491 | Chicago | AT&T | Landline | 0 |
| 312-492 | Chicago | AT&T | Landline | 0 |
| 312-493 | Chicago | T-Mobile | Wireless | 0 |
| 312-494 | Chicago | AT&T | Landline | 0 |
| 312-495 | Chicago | Spok (paging) | Pager | 0 |
| 312-496 | Chicago | AT&T | Landline | 0 |
| 312-497 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-498 | Chicago | T-Mobile | Wireless | 0 |
| 312-499 | Chicago | AT&T | Landline | 0 |
| 312-500 | Chicago | Onvoy (Sinch) | VoIP | 1 |
| 312-501 | La Grange | Verizon Wireless | Wireless | 0 |
| 312-502 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-503 | Chicago | AT&T | VoIP | 0 |
| 312-504 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-505 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-506 | Chicago | First Communications | Landline | 0 |
| 312-507 | Chicago | AT&T | Landline | 0 |
| 312-508 | Chicago | Peerless Network | VoIP | 0 |
| 312-509 | Chicago | Peerless Network | VoIP | 0 |
| 312-510 | Hinsdale | AT&T Mobility | Wireless | 0 |
| 312-512 | Chicago | Spok (paging) | Pager | 0 |
| 312-513 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-514 | Chicago | American Messaging Services | Landline | 0 |
| 312-515 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-516 | Chicago | AT&T | Landline | 0 |
| 312-517 | Chicago | Verizon Business | VoIP | 0 |
| 312-518 | Wheeling | AT&T Mobility | Wireless | 0 |
| 312-519 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-520 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-521 | Chicago | AT&T | VoIP | 0 |
| 312-522 | Chicago | T-Mobile | Wireless | 0 |
| 312-523 | Chicago | T-Mobile | Wireless | 0 |
| 312-524 | Wheeling | AT&T Mobility | Wireless | 0 |
| 312-525 | Chicago | Verizon Business | VoIP | 0 |
| 312-526 | Chicago | AT&T | Landline | 0 |
| 312-527 | Chicago | AT&T | Landline | 0 |
| 312-528 | Chicago | AT&T | Landline | 0 |
| 312-529 | Chicago | AT&T | Landline | 0 |
| 312-530 | Chicago | Stratus Networks | Landline | 0 |
| 312-531 | Hinsdale | AT&T Mobility | Wireless | 0 |
| 312-532 | Chicago | T-Mobile | Wireless | 0 |
| 312-533 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-534 | Chicago | AT&T | Landline | 0 |
| 312-535 | Chicago | Bandwidth | VoIP | 0 |
| 312-536 | Chicago | T-Mobile | Wireless | 0 |
| 312-537 | Chicago | AT&T | Landline | 0 |
| 312-538 | Chicago | T-Mobile (Metro) | Wireless | 0 |
| 312-539 | Chicago | T-Mobile | Wireless | 0 |
| 312-540 | Chicago | AT&T | Landline | 0 |
| 312-541 | Chicago | AT&T | Landline | 0 |
| 312-542 | Chicago | AT&T | Landline | 0 |
| 312-543 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-544 | Chicago | AT&T | Landline | 0 |
| 312-545 | Chicago | T-Mobile | Wireless | 0 |
| 312-546 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-547 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-548 | Chicago | Lumen (Level 3) | VoIP | 1 |
| 312-549 | Chicago | AT&T | VoIP | 0 |
| 312-550 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-551 | Chicago | AT&T | Landline | 0 |
| 312-552 | Chicago | AT&T | Landline | 0 |
| 312-553 | Chicago | AT&T | Landline | 0 |
| 312-554 | Chicago | AT&T | Landline | 0 |
| 312-556 | Chicago | AT&T | Landline | 0 |
| 312-557 | Chicago | AT&T | Landline | 0 |
| 312-558 | Chicago | AT&T | Landline | 0 |
| 312-559 | Chicago | AT&T | Landline | 0 |
| 312-560 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-561 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-562 | Chicago | Spok (paging) | Pager | 0 |
| 312-563 | Chicago | AT&T | Landline | 0 |
| 312-564 | Chicago | First Communications | Landline | 0 |
| 312-565 | Chicago | AT&T | Landline | 0 |
| 312-566 | Chicago | AT&T | Landline | 0 |
| 312-567 | Chicago | AT&T | Landline | 0 |
| 312-568 | Chicago | AT&T | Landline | 0 |
| 312-569 | Chicago | AT&T | Landline | 0 |
| 312-570 | Chicago | AT&T | Landline | 0 |
| 312-571 | Chicago | Spok (paging) | Pager | 0 |
| 312-572 | Chicago | AT&T | Landline | 0 |
| 312-573 | Chicago | AT&T | Landline | 0 |
| 312-574 | Chicago | AT&T | Landline | 0 |
| 312-575 | Chicago | AT&T | Landline | 0 |
| 312-576 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-577 | Chicago | Verizon Business | VoIP | 0 |
| 312-578 | Chicago | AT&T | Landline | 0 |
| 312-579 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-580 | Chicago | AT&T | Landline | 0 |
| 312-581 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-582 | Chicago | AT&T | Landline | 0 |
| 312-583 | Chicago | AT&T | Landline | 0 |
| 312-584 | Chicago | Voip Innovations | VoIP | 0 |
| 312-585 | Chicago | Verizon Business | VoIP | 1 |
| 312-586 | Chicago | Onvoy (Sinch) | VoIP | 2 |
| 312-587 | Chicago | AT&T | Landline | 0 |
| 312-588 | Chicago | AT&T | Landline | 0 |
| 312-589 | Chicago | AT&T | Landline | 0 |
| 312-590 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-591 | Chicago | AT&T | Landline | 0 |
| 312-592 | Chicago | AT&T | Landline | 0 |
| 312-593 | Chicago | T-Mobile | Wireless | 0 |
| 312-594 | Chicago | Verizon Business | VoIP | 0 |
| 312-595 | Chicago | AT&T | Landline | 0 |
| 312-596 | Chicago | AT&T | VoIP | 0 |
| 312-597 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-598 | Chicago | Onvoy (Sinch) | VoIP | 1 |
| 312-599 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-600 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-601 | Chicago | Verizon Business | VoIP | 0 |
| 312-602 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-603 | Chicago | AT&T | Landline | 0 |
| 312-604 | Chicago | Verizon Business | VoIP | 0 |
| 312-605 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-606 | Chicago | AT&T | Landline | 0 |
| 312-607 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-608 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-609 | Chicago | AT&T | Landline | 0 |
| 312-610 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-612 | Chicago | AT&T | Landline | 0 |
| 312-613 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-614 | Chicago | AT&T | Landline | 0 |
| 312-615 | Wheeling | AT&T Mobility | Wireless | 0 |
| 312-616 | Chicago | AT&T | Landline | 0 |
| 312-617 | Chicago | T-Mobile | Wireless | 0 |
| 312-618 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-619 | Chicago | T-Mobile | Wireless | 0 |
| 312-620 | Chicago | Bandwidth | VoIP | 0 |
| 312-621 | Chicago | AT&T | Landline | 0 |
| 312-622 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-623 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-624 | Chicago | Rcn Telecom Services of Illinios | Landline | 0 |
| 312-625 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-626 | Chicago | Onvoy (Sinch) | VoIP | 1 |
| 312-627 | Chicago | AT&T | Landline | 0 |
| 312-628 | Chicago | Verizon Business | VoIP | 0 |
| 312-629 | Chicago | AT&T | Landline | 0 |
| 312-630 | Chicago | AT&T | Landline | 0 |
| 312-631 | Chicago | Lumen (CenturyLink) | Landline | 0 |
| 312-632 | Chicago | AT&T | Landline | 1 |
| 312-633 | Chicago | AT&T | Landline | 0 |
| 312-634 | Chicago | AT&T | Landline | 0 |
| 312-635 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-636 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-637 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-638 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-639 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-640 | Chicago | AT&T | Landline | 0 |
| 312-641 | Chicago | AT&T | Landline | 0 |
| 312-642 | Chicago | AT&T | Landline | 0 |
| 312-643 | Chicago | Rcn Telecom Services of Illinios | Landline | 0 |
| 312-644 | Chicago | AT&T | Landline | 0 |
| 312-645 | Chicago | AT&T | Landline | 0 |
| 312-646 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-647 | Chicago | T-Mobile | Wireless | 0 |
| 312-648 | Chicago | AT&T | Landline | 0 |
| 312-649 | Chicago | AT&T | Landline | 0 |
| 312-650 | Chicago | Rcn Telecom Services of Illinios | Landline | 0 |
| 312-651 | Chicago | AT&T | Landline | 0 |
| 312-652 | Chicago | AT&T | Landline | 0 |
| 312-653 | Chicago | AT&T | Landline | 1 |
| 312-654 | Chicago | AT&T | Landline | 0 |
| 312-655 | Chicago | AT&T | Landline | 0 |
| 312-656 | Chicago | T-Mobile | Wireless | 0 |
| 312-657 | Chicago | Spok (paging) | Pager | 0 |
| 312-658 | Chicago | AT&T | Landline | 0 |
| 312-659 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-660 | Chicago | AT&T | VoIP | 0 |
| 312-661 | Chicago | AT&T | Landline | 0 |
| 312-662 | Chicago | AT&T | Landline | 0 |
| 312-663 | Chicago | AT&T | Landline | 0 |
| 312-664 | Chicago | AT&T | Landline | 0 |
| 312-665 | Chicago | AT&T | VoIP | 0 |
| 312-666 | Chicago | AT&T | Landline | 0 |
| 312-667 | Chicago | Peerless Network | VoIP | 0 |
| 312-668 | Chicago | Csc Wireless | Wireless | 0 |
| 312-669 | Chicago | AT&T | Landline | 0 |
| 312-670 | Chicago | AT&T | Landline | 0 |
| 312-671 | Chicago | T-Mobile | Wireless | 0 |
| 312-672 | Chicago | AT&T | Landline | 0 |
| 312-673 | Chicago | First Communications | Landline | 0 |
| 312-674 | Chicago | AT&T | Landline | 0 |
| 312-675 | Chicago | AT&T | Landline | 0 |
| 312-676 | Chicago | First Communications | Landline | 0 |
| 312-677 | Chicago | Spok (paging) | Pager | 0 |
| 312-678 | Chicago | T-Mobile | Wireless | 0 |
| 312-679 | Chicago | Tpx Communications | Landline | 0 |
| 312-680 | Chicago | Onvoy (Sinch) | VoIP | 14 |
| 312-681 | Chicago | AT&T | Landline | 0 |
| 312-682 | Chicago | Nuso | Landline | 0 |
| 312-683 | Chicago | AT&T | Landline | 0 |
| 312-684 | Chicago | T-Mobile | Wireless | 0 |
| 312-685 | Chicago | T-Mobile | Wireless | 0 |
| 312-686 | Chicago | Peerless Network | VoIP | 0 |
| 312-687 | Chicago | T-Mobile | Wireless | 0 |
| 312-688 | Chicago | Spok (paging) | Pager | 0 |
| 312-689 | Chicago | American Messaging Services | Landline | 0 |
| 312-690 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-691 | Chicago | Indiana Paging Network | Pager | 0 |
| 312-692 | Chicago | AT&T | Landline | 0 |
| 312-693 | Chicago | AT&T | Landline | 0 |
| 312-694 | Chicago | AT&T | Landline | 0 |
| 312-695 | Chicago | AT&T | Landline | 0 |
| 312-696 | Chicago | AT&T | Landline | 0 |
| 312-697 | Chicago | AT&T | Landline | 0 |
| 312-698 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-699 | Hinsdale | AT&T Mobility | Wireless | 0 |
| 312-701 | Chicago | AT&T | Landline | 0 |
| 312-702 | Chicago | Verizon Business | VoIP | 0 |
| 312-703 | Chicago | AT&T | Landline | 0 |
| 312-704 | Chicago | AT&T | Landline | 0 |
| 312-705 | Chicago | AT&T | VoIP | 0 |
| 312-706 | Chicago | AT&T | VoIP | 0 |
| 312-707 | Chicago | AT&T | Landline | 0 |
| 312-708 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-709 | Chicago | T-Mobile | Wireless | 0 |
| 312-710 | Chicago | AT&T | Landline | 0 |
| 312-712 | Chicago | AT&T | Landline | 0 |
| 312-713 | Chicago | American Messaging Services | Landline | 0 |
| 312-714 | Chicago | AT&T | Landline | 0 |
| 312-715 | Chicago | AT&T | Landline | 0 |
| 312-716 | Chicago | AT&T | Landline | 0 |
| 312-717 | La Grange | Spok (paging) | Pager | 0 |
| 312-718 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-719 | Chicago | T-Mobile | Wireless | 0 |
| 312-720 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-721 | Chicago | T-Mobile | Wireless | 0 |
| 312-722 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-723 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-724 | Chicago | Bandwidth | VoIP | 0 |
| 312-725 | Chicago | Bandwidth | VoIP | 0 |
| 312-726 | Chicago | AT&T | Landline | 0 |
| 312-727 | Chicago | AT&T | Landline | 0 |
| 312-728 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-729 | Chicago | AT&T | Landline | 0 |
| 312-730 | Chicago | AT&T | Landline | 1 |
| 312-731 | Chicago | T-Mobile | Wireless | 0 |
| 312-732 | Chicago | AT&T | Landline | 0 |
| 312-733 | Chicago | AT&T | Landline | 0 |
| 312-734 | Chicago | AT&T | VoIP | 0 |
| 312-735 | Chicago | T-Mobile | Wireless | 0 |
| 312-736 | Chicago | AT&T | VoIP | 0 |
| 312-737 | Chicago | AT&T | Landline | 0 |
| 312-738 | Chicago | AT&T | Landline | 0 |
| 312-739 | Chicago | AT&T | Landline | 0 |
| 312-740 | Chicago | American Messaging Services | Landline | 0 |
| 312-741 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-742 | Chicago | AT&T | Landline | 0 |
| 312-743 | Chicago | AT&T | Landline | 0 |
| 312-744 | Chicago | AT&T | Landline | 0 |
| 312-745 | Chicago | AT&T | Landline | 0 |
| 312-746 | Chicago | AT&T | Landline | 0 |
| 312-747 | Chicago | AT&T | Landline | 0 |
| 312-748 | Chicago | Onvoy (Sinch) | VoIP | 1 |
| 312-749 | Hinsdale | AT&T Mobility | Wireless | 0 |
| 312-750 | Chicago | AT&T | Landline | 0 |
| 312-751 | Chicago | AT&T | Landline | 0 |
| 312-752 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-753 | Chicago | Rcn Telecom Services of Illinios | Landline | 0 |
| 312-754 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-755 | Chicago | AT&T | Landline | 0 |
| 312-756 | Chicago | AT&T | Landline | 1 |
| 312-757 | Chicago | Bandwidth | VoIP | 49 |
| 312-758 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-759 | Chicago | AT&T | Landline | 0 |
| 312-760 | Chicago | American Messaging Services | Landline | 0 |
| 312-761 | Chicago | Telengy | Landline | 0 |
| 312-762 | Chicago | AT&T | Landline | 0 |
| 312-763 | Chicago | Comcast (Xfinity) | VoIP | 0 |
| 312-764 | Chicago | AT&T | VoIP | 0 |
| 312-765 | Chicago | AT&T | Landline | 0 |
| 312-766 | Chicago | Peerless Network | VoIP | 0 |
| 312-767 | Chicago | Bandwidth | VoIP | 0 |
| 312-768 | Chicago | AT&T | VoIP | 0 |
| 312-769 | Chicago | Indiana Paging Network | Pager | 0 |
| 312-770 | Chicago | AT&T | Landline | 0 |
| 312-771 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-772 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-773 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-774 | Chicago | T-Mobile | Wireless | 0 |
| 312-775 | Chicago | AT&T | Landline | 0 |
| 312-776 | Chicago | T-Mobile | Wireless | 0 |
| 312-777 | Chicago | AT&T | VoIP | 0 |
| 312-778 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-779 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-780 | Chicago | Verizon Business | VoIP | 0 |
| 312-781 | Chicago | AT&T | Landline | 0 |
| 312-782 | Chicago | AT&T | Landline | 0 |
| 312-783 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-784 | Chicago | First Communications | Landline | 0 |
| 312-785 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-786 | Chicago | AT&T | Landline | 0 |
| 312-787 | Chicago | AT&T | Landline | 0 |
| 312-788 | Chicago | AT&T | Landline | 0 |
| 312-789 | Chicago | AT&T | Landline | 0 |
| 312-790 | Chicago | AT&T | Landline | 0 |
| 312-791 | Chicago | AT&T | Landline | 0 |
| 312-792 | Chicago | Verizon Business | VoIP | 0 |
| 312-793 | Chicago | AT&T | Landline | 0 |
| 312-794 | Chicago | Rcn Telecom Services of Illinios | Landline | 0 |
| 312-795 | Chicago | AT&T | Landline | 0 |
| 312-796 | Chicago | Peerless Network | VoIP | 0 |
| 312-797 | Chicago | AT&T | Landline | 0 |
| 312-798 | Chicago | AT&T | Landline | 0 |
| 312-799 | Chicago | AT&T | Landline | 0 |
| 312-800 | Chicago | Peerless Network | VoIP | 0 |
| 312-801 | Chicago | Nuso | Landline | 0 |
| 312-802 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-803 | Chicago | Verizon Business | VoIP | 0 |
| 312-804 | Chicago | T-Mobile | Wireless | 0 |
| 312-805 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-806 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-807 | Chicago | AT&T | Landline | 0 |
| 312-808 | Chicago | AT&T | Landline | 0 |
| 312-809 | Chicago | Verizon Business | VoIP | 0 |
| 312-810 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-812 | Chicago | AT&T | Landline | 0 |
| 312-813 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-814 | Chicago | AT&T | Landline | 0 |
| 312-815 | Chicago | Airespring | Landline | 0 |
| 312-816 | Hinsdale | AT&T Mobility | Wireless | 0 |
| 312-817 | Chicago | AT&T | Landline | 0 |
| 312-818 | Chicago | T-Mobile | Wireless | 1 |
| 312-819 | Chicago | AT&T | Landline | 0 |
| 312-820 | Chicago | Onvoy (Sinch) | VoIP | 13 |
| 312-821 | Chicago | Verizon Business | VoIP | 0 |
| 312-822 | Chicago | AT&T | Landline | 0 |
| 312-823 | Chicago | AT&T | Landline | 0 |
| 312-824 | Chicago | Verizon Business | VoIP | 0 |
| 312-825 | Chicago | T-Mobile | Wireless | 0 |
| 312-826 | Chicago | T-Mobile | Wireless | 0 |
| 312-827 | Chicago | AT&T | Landline | 0 |
| 312-828 | Chicago | AT&T | Landline | 0 |
| 312-829 | Chicago | AT&T | Landline | 0 |
| 312-831 | Chicago | AT&T | Landline | 0 |
| 312-832 | Chicago | AT&T | Landline | 0 |
| 312-833 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-834 | Chicago | AT&T | Landline | 0 |
| 312-835 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-836 | Chicago | AT&T | Landline | 0 |
| 312-837 | Chicago | Comcast (Xfinity) | VoIP | 0 |
| 312-838 | Chicago | T-Mobile | Wireless | 0 |
| 312-839 | Chicago | American Messaging Services | Landline | 0 |
| 312-840 | Chicago | AT&T | Landline | 0 |
| 312-841 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-842 | Chicago | AT&T | Landline | 0 |
| 312-843 | Chicago | AT&T | VoIP | 0 |
| 312-844 | Hinsdale | AT&T Mobility | Wireless | 0 |
| 312-845 | Chicago | AT&T | Landline | 0 |
| 312-846 | Chicago | AT&T | Landline | 0 |
| 312-847 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-848 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-849 | Chicago | AT&T | Landline | 0 |
| 312-850 | Chicago | AT&T | Landline | 0 |
| 312-851 | Chicago | Spok (paging) | Pager | 0 |
| 312-852 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-853 | Chicago | AT&T | Landline | 0 |
| 312-854 | Chicago | Rcn Telecom Services of Illinios | Landline | 0 |
| 312-855 | Chicago | AT&T | Landline | 0 |
| 312-856 | Chicago | AT&T | Landline | 0 |
| 312-857 | Chicago | AT&T | Landline | 0 |
| 312-858 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-859 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-860 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-861 | Chicago | AT&T | Landline | 0 |
| 312-862 | Chicago | AT&T | Landline | 0 |
| 312-863 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-864 | Chicago | AT&T | Landline | 0 |
| 312-865 | Wheeling | AT&T Mobility | Wireless | 0 |
| 312-866 | Chicago | T-Mobile | Wireless | 0 |
| 312-867 | Chicago | AT&T | Landline | 0 |
| 312-868 | Chicago | Bandwidth | VoIP | 0 |
| 312-869 | Chicago | AT&T | Landline | 0 |
| 312-870 | Chicago | First Communications | Landline | 0 |
| 312-871 | Chicago | T-Mobile | Wireless | 1 |
| 312-872 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-873 | Chicago | Verizon Business | VoIP | 0 |
| 312-874 | Chicago | T-Mobile | Wireless | 0 |
| 312-875 | Chicago | AT&T | Landline | 0 |
| 312-876 | Chicago | AT&T | Landline | 0 |
| 312-877 | Chicago | AT&T Enterprises | Landline | 0 |
| 312-878 | Chicago | Peerless Network | VoIP | 0 |
| 312-879 | Chicago | AT&T | Landline | 0 |
| 312-880 | Chicago | AT&T | Landline | 0 |
| 312-881 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-882 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-883 | Chicago | Bandwidth | VoIP | 0 |
| 312-884 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-885 | Chicago | T-Mobile | Wireless | 0 |
| 312-886 | Chicago | AT&T | Landline | 0 |
| 312-887 | Chicago | AT&T | Landline | 0 |
| 312-888 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-889 | Chicago | AT&T | VoIP | 0 |
| 312-890 | Chicago | T-Mobile | Wireless | 0 |
| 312-891 | Chicago | Spok (paging) | Pager | 0 |
| 312-892 | Chicago | AT&T | VoIP | 0 |
| 312-893 | Chicago | Lumen (Level 3) | VoIP | 1 |
| 312-894 | Chicago | Verizon Business | VoIP | 0 |
| 312-895 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-896 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-897 | Chicago | Verizon Business | VoIP | 0 |
| 312-898 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-899 | Chicago | AT&T | Landline | 0 |
| 312-900 | Chicago | Fractel | VoIP | 0 |
| 312-901 | Chicago | Spok (paging) | Pager | 0 |
| 312-902 | Chicago | AT&T | Landline | 0 |
| 312-903 | Chicago | American Messaging Services | Landline | 0 |
| 312-904 | Chicago | AT&T | Landline | 0 |
| 312-905 | Chicago | AT&T | Landline | 0 |
| 312-906 | Chicago | AT&T | Landline | 1 |
| 312-907 | Chicago | T-Mobile | Wireless | 0 |
| 312-908 | Chicago | AT&T | Landline | 0 |
| 312-909 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-910 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-912 | Chicago | AT&T | Landline | 0 |
| 312-913 | Chicago | AT&T | Landline | 0 |
| 312-914 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-915 | Chicago | AT&T | Landline | 0 |
| 312-917 | Chicago | AT&T | Landline | 0 |
| 312-918 | Chicago | T-Mobile | Wireless | 0 |
| 312-919 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-920 | Chicago | AT&T | Landline | 0 |
| 312-921 | Chicago | AT&T | Landline | 0 |
| 312-922 | Chicago | AT&T | Landline | 0 |
| 312-923 | Chicago | AT&T | Landline | 0 |
| 312-924 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-925 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-926 | Chicago | AT&T | Landline | 0 |
| 312-927 | Chicago | T-Mobile | Wireless | 0 |
| 312-928 | Chicago | AT&T | Landline | 0 |
| 312-929 | Chicago | T-Mobile | Wireless | 0 |
| 312-930 | Chicago | AT&T | Landline | 0 |
| 312-931 | Chicago | AT&T | Landline | 0 |
| 312-932 | Chicago | AT&T | Landline | 0 |
| 312-933 | Chicago | T-Mobile | Wireless | 0 |
| 312-934 | Chicago | T-Mobile | Wireless | 0 |
| 312-935 | Chicago | AT&T | Landline | 0 |
| 312-936 | Chicago | AT&T | Landline | 0 |
| 312-937 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-938 | Chicago | AT&T | Landline | 0 |
| 312-939 | Chicago | AT&T | Landline | 0 |
| 312-940 | Chicago | Peerless Network | VoIP | 0 |
| 312-941 | Chicago | Spok (paging) | Pager | 0 |
| 312-942 | Chicago | AT&T | Landline | 0 |
| 312-943 | Chicago | AT&T | Landline | 0 |
| 312-944 | Chicago | AT&T | Landline | 0 |
| 312-945 | Chicago | AT&T | Landline | 0 |
| 312-946 | Chicago | AT&T | Landline | 0 |
| 312-947 | Chicago | AT&T | Landline | 0 |
| 312-948 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-949 | Chicago | AT&T | Landline | 0 |
| 312-951 | Chicago | AT&T | Landline | 0 |
| 312-952 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-953 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-954 | Chicago | AT&T | Landline | 0 |
| 312-955 | Chicago | Rcn Telecom Services of Illinios | Landline | 0 |
| 312-956 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-957 | Chicago | AT&T | Landline | 0 |
| 312-960 | Chicago | AT&T | Landline | 0 |
| 312-961 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-962 | Chicago | Lumen (Level 3) | VoIP | 0 |
| 312-963 | Chicago | Spok (paging) | Pager | 0 |
| 312-964 | Chicago | Onvoy (Sinch) | VoIP | 0 |
| 312-965 | Chicago | Verizon Wireless | Wireless | 0 |
| 312-966 | Chicago | T-Mobile (Metro) | Wireless | 0 |
| 312-967 | Chicago | Bandwidth | VoIP | 0 |
| 312-968 | La Grange | Verizon Wireless | Wireless | 0 |
| 312-969 | La Grange | Verizon Wireless | Wireless | 0 |
| 312-970 | Chicago | AT&T | Landline | 0 |
| 312-971 | Chicago | Bandwidth | VoIP | 0 |
| 312-972 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-973 | Chicago | Verizon Business | VoIP | 0 |
| 312-974 | Chicago | AT&T | Landline | 0 |
| 312-975 | Chicago | T-Mobile | Wireless | 0 |
| 312-977 | Chicago | AT&T | Landline | 0 |
| 312-978 | Chicago | T-Mobile | Wireless | 0 |
| 312-979 | Chicago | AT&T | Landline | 0 |
| 312-980 | Chicago | AT&T | VoIP | 0 |
| 312-981 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-982 | Chicago | Comcast (Xfinity) | VoIP | 0 |
| 312-983 | Chicago | AT&T | Landline | 0 |
| 312-984 | Chicago | AT&T | Landline | 0 |
| 312-985 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-986 | Chicago | AT&T | Landline | 0 |
| 312-987 | Chicago | AT&T | Landline | 0 |
| 312-988 | Chicago | AT&T | Landline | 0 |
| 312-989 | Chicago | AT&T Mobility | Wireless | 0 |
| 312-990 | Hinsdale | AT&T Mobility | Wireless | 0 |
| 312-991 | Wheeling | AT&T Mobility | Wireless | 0 |
| 312-992 | Chicago | AT&T | Landline | 0 |
| 312-993 | Chicago | AT&T | Landline | 0 |
| 312-994 | Chicago | Windstream (PAETEC) | VoIP | 0 |
| 312-995 | Chicago | AT&T | VoIP | 0 |
| 312-996 | Chicago | AT&T | Landline | 0 |
| 312-997 | Chicago | AT&T | Landline | 0 |
| 312-998 | Chicago | Lumen (CenturyLink) | Landline | 0 |
| 312-999 | Chicago | Verizon Business | VoIP | 0 |
Area code 312 questions
Where is area code 312?
Area code 312 is in Illinois. Its biggest rate centers are Chicago, Wheeling, Hinsdale, La Grange, Northbrook.
What time zone is area code 312?
Area code 312 is in the Central time zone.
Is a call from area code 312 a scam?
An area code alone can't tell you. Scammers use and spoof numbers in every area code. 100 312 numbers have been flagged on ShadyCall. Look up the full number to see its reports and FTC/FCC complaints.
What carriers use area code 312?
Of its 784 exchanges, the most were assigned to AT&T, AT&T Mobility, T-Mobile. Numbers can be ported to any carrier, so the exchange shows the original carrier only.
What area codes overlay 312?
312 shares its area with 872. In an overlay, new numbers get the newer codes and you dial all ten digits.