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Detailed Information on Areacode 312
Reverse lookup results for areacode 312
| State | ILLINOIS |
| Areacode | 312 |
| Date First Introduced | Feb 04 1994 |
| Timezone | (UTC-06:00) |
| Major Counties | COOK, DU PAGE |
| Major Cities | CHICAGO, WHEELING, HINSDALE, LA GRANGE PARK, NORTHBROOK, ROSELLE |
| Related Areacodes | 217 224 309 618 630 708 773 815 847 |
Map for areacode 312 in ILLINOIS
Following is the list of available exchanges for areacode 312 in ILLINOIS -
| CHICAGO | Areacode 312-201 - (Ameritech Illinois - 312201) Areacode 312-202 - (Ameritech Illinois - 312202) Areacode 312-203 - (Southwestern Bell Mobile Systems, Llc - Il - 312203) Areacode 312-204 - (Ameritech Illinois - 312204) Areacode 312-205 - (Allegiance Telecom, Inc. - Il - 312205) Areacode 312-206 - (Southwestern Bell Mobile Systems, Llc - Il - 312206) Areacode 312-207 - (Ameritech Illinois - 312207) Areacode 312-208 - (Southwestern Bell Mobile Systems, Llc - Il - 312208) Areacode 312-210 - ( - 312210) Areacode 312-212 - (Ameritech Illinois - 312212) Areacode 312-213 - (Southwestern Bell Mobile Systems, Llc - Il - 312213) Areacode 312-214 - (Ameritech Illinois - 312214) Areacode 312-216 - (Source One Wireless - 312216) Areacode 312-217 - (United States Cellular Corp. - 312217) Areacode 312-218 - (Southwestern Bell Mobile Systems, Llc - Il - 312218) Areacode 312-220 - (Ameritech Illinois - 312220) Areacode 312-221 - (Heartland Communications, Inc. - 312221) Areacode 312-222 - (Ameritech Illinois - 312222) Areacode 312-223 - (Ameritech Illinois - 312223) Areacode 312-224 - (Focal Communications Corp Of Illinois - 312224) Areacode 312-225 - (Ameritech Illinois - 312225) Areacode 312-226 - (Ameritech Illinois - 312226) Areacode 312-228 - (Ameritech Illinois - 312228) Areacode 312-229 - (Ameritech Illinois - 312229) Areacode 312-230 - (Ameritech Illinois - 312230) Areacode 312-232 - (Airtouch Paging - Illinois - 312232) Areacode 312-233 - (Ameritech Illinois - 312233) Areacode 312-234 - (Ameritech Illinois - 312234) Areacode 312-235 - (Ameritech Illinois - 312235) Areacode 312-236 - (Ameritech Illinois - 312236) Areacode 312-237 - (Cellco Partnership Dba Verizon Wireless - Il - 312237) Areacode 312-238 - (Focal Communications Corp Of Illinois - 312238) Areacode 312-239 - (At&t Local - 312239) Areacode 312-240 - (Ameritech Illinois - 312240) Areacode 312-241 - (Heartland Communications, Inc. - 312241) Areacode 312-242 - (Teleport Communications Group - Chicago - 312242) Areacode 312-243 - (Ameritech Illinois - 312243) Areacode 312-244 - (Ameritech Illinois - 312244) Areacode 312-245 - (Ameritech Illinois - 312245) Areacode 312-249 - (Arch Wireless Holdings, Inc. - 312249) Areacode 312-250 - (Metrocall - 312250) Areacode 312-251 - (Ameritech Illinois - 312251) Areacode 312-252 - (Allegiance Telecom, Inc. - Il - 312252) Areacode 312-253 - (Allegiance Telecom, Inc. - Il - 312253) Areacode 312-254 - (Allegiance Telecom, Inc. - Il - 312254) Areacode 312-255 - (Ameritech Illinois - 312255) Areacode 312-256 - (Allegiance Telecom, Inc. - Il - 312256) Areacode 312-258 - (Ameritech Illinois - 312258) Areacode 312-259 - (Southwestern Bell Mobile Systems, Llc - Il - 312259) Areacode 312-260 - (Mcimetro, Ats, Inc. - 312260) Areacode 312-261 - (Focal Communications Corp Of Illinois - 312261) Areacode 312-262 - (Allegiance Telecom, Inc. - Il - 312262) Areacode 312-263 - (Ameritech Illinois - 312263) Areacode 312-264 - (Focal Communications Corp Of Illinois - 312264) Areacode 312-266 - (Ameritech Illinois - 312266) Areacode 312-267 - (Ameritech Illinois - 312267) Areacode 312-268 - (Focal Communications Corp Of Illinois - 312268) Areacode 312-269 - (Ameritech Illinois - 312269) Areacode 312-271 - (Arch Wireless Holdings, Inc. - 312271) Areacode 312-272 - (Metrocall - 312272) Areacode 312-274 - (Ameritech Illinois - 312274) Areacode 312-275 - (Allegiance Telecom, Inc. - Il - 312275) Areacode 312-276 - (Allegiance Telecom, Inc. - Il - 312276) Areacode 312-277 - (Allegiance Telecom, Inc. - Il - 312277) Areacode 312-278 - (Focal Communications Corp Of Illinois - 312278) Areacode 312-279 - (Mcimetro, Ats, Inc. - 312279) Areacode 312-280 - (Ameritech Illinois - 312280) Areacode 312-281 - (Global Crossing Local Services, Inc.-il - 312281) Areacode 312-282 - (At&t Wireless Services, Inc. - 312282) Areacode 312-283 - (Global Crossing Local Services, Inc.-il - 312283) Areacode 312-284 - (Xo Illinois, Inc. - 312284) Areacode 312-285 - (Sprint Spectrum L.p. - 312285) Areacode 312-286 - (At&t Wireless Services, Inc. - 312286) Areacode 312-287 - (Nextel Communications - 312287) Areacode 312-288 - (Intermedia Communications Inc. - Il - 312288) Areacode 312-289 - (Metrocall - 312289) Areacode 312-290 - (Metrocall - 312290) Areacode 312-291 - (Ameritech Illinois - 312291) Areacode 312-293 - (Ameritech Illinois - 312293) Areacode 312-294 - (Ameritech Illinois - 312294) Areacode 312-296 - (Nextel Communications - 312296) Areacode 312-297 - (Ameritech Illinois - 312297) Areacode 312-298 - (Sprint Communications Company, L.p. - Il - 312298) Areacode 312-299 - (Arch Wireless Holdings, Inc. - 312299) Areacode 312-300 - (Ameritech Illinois - 312300) Areacode 312-302 - (Ameritech Illinois - 312302) Areacode 312-306 - (Ameritech Illinois - 312306) Areacode 312-307 - (Southwestern Bell Mobile Systems, Llc - Il - 312307) Areacode 312-308 - (Ameritech Illinois - 312308) Areacode 312-309 - (Ameritech Illinois - 312309) Areacode 312-313 - (Source One Wireless - 312313) Areacode 312-315 - (Southwestern Bell Mobile Systems, Llc - Il - 312315) Areacode 312-316 - (Southwestern Bell Mobile Systems, Llc - Il - 312316) Areacode 312-320 - (Southwestern Bell Mobile Systems, Llc - Il - 312320) Areacode 312-321 - (Ameritech Illinois - 312321) Areacode 312-322 - (Ameritech Illinois - 312322) Areacode 312-323 - (Ameritech Mobile Services, Inc. - 312323) Areacode 312-324 - (Icg Telecom Group - Il - 312324) Areacode 312-325 - (Ameritech Illinois - 312325) Areacode 312-326 - (Ameritech Illinois - 312326) Areacode 312-327 - (Xo Illinois, Inc. - 312327) Areacode 312-328 - (Ameritech Illinois - 312328) Areacode 312-329 - (Ameritech Illinois - 312329) Areacode 312-330 - (Southwestern Bell Mobile Systems, Llc - Il - 312330) Areacode 312-332 - (Ameritech Illinois - 312332) Areacode 312-333 - (Ameritech Mobile Services, Inc. - 312333) Areacode 312-334 - (Globalcom, Inc.-il - 312334) Areacode 312-335 - (Ameritech Illinois - 312335) Areacode 312-336 - (Ameritech Illinois - 312336) Areacode 312-337 - (Ameritech Illinois - 312337) Areacode 312-338 - (Ameritech Illinois - 312338) Areacode 312-339 - (Cellco Partnership Dba Verizon Wireless - Il - 312339) Areacode 312-341 - (Ameritech Illinois - 312341) Areacode 312-342 - (At&t Wireless Services, Inc. - 312342) Areacode 312-343 - (Cellco Partnership Dba Verizon Wireless - Il - 312343) Areacode 312-344 - (Ameritech Illinois - 312344) Areacode 312-345 - (Ameritech Illinois - 312345) Areacode 312-346 - (Ameritech Illinois - 312346) Areacode 312-347 - (Ameritech Illinois - 312347) Areacode 312-349 - (Arch Wireless Holdings, Inc. - 312349) Areacode 312-350 - (Cellco Partnership Dba Verizon Wireless - Il - 312350) Areacode 312-351 - (Southwestern Bell Mobile Systems, Llc - Il - 312351) Areacode 312-353 - (Ameritech Illinois - 312353) Areacode 312-355 - (Ameritech Illinois - 312355) Areacode 312-356 - (Ameritech Illinois - 312356) Areacode 312-357 - (Ameritech Illinois - 312357) Areacode 312-358 - (Source One Wireless - 312358) Areacode 312-359 - (Arch Wireless Holdings, Inc. - 312359) Areacode 312-360 - (Ameritech Illinois - 312360) Areacode 312-361 - (Ameritech Illinois - 312361) Areacode 312-362 - (Ameritech Illinois - 312362) Areacode 312-363 - (Rcn Telecom Services Of Illinois, Inc. - Il - 312363) Areacode 312-364 - (Ameritech Illinois - 312364) Areacode 312-365 - (Arch Wireless Holdings, Inc. - 312365) Areacode 312-368 - (Ameritech Illinois - 312368) Areacode 312-369 - (Southwestern Bell Mobile Systems, Llc - Il - 312369) Areacode 312-370 - (Heartland Communications, Inc. - 312370) Areacode 312-371 - (Sprint Spectrum L.p. - 312371) Areacode 312-372 - (Ameritech Illinois - 312372) Areacode 312-373 - (Focal Communications Corp Of Illinois - 312373) Areacode 312-374 - (Ameritech Illinois - 312374) Areacode 312-375 - (T-mobile Usa, Inc. - 312375) Areacode 312-377 - (Xo Illinois, Inc. - 312377) Areacode 312-378 - (Weblink Wireless, Inc. - 312378) Areacode 312-379 - (Ovation Communications Of Illinois, Inc. - 312379) Areacode 312-380 - (Ameritech Illinois - 312380) Areacode 312-381 - (Ameritech Illinois - 312381) Areacode 312-382 - (Ameritech Illinois - 312382) Areacode 312-383 - (Metrocall - 312383) Areacode 312-384 - (Ameritech Illinois - 312384) Areacode 312-385 - (Ameritech Illinois - 312385) Areacode 312-386 - (Ameritech Illinois - 312386) Areacode 312-387 - (Arch Wireless Holdings, Inc. - 312387) Areacode 312-388 - (United States Cellular Corp. - 312388) Areacode 312-389 - (Arch Wireless Holdings, Inc. - 312389) Areacode 312-390 - (Ameritech Mobile Services, Inc. - 312390) Areacode 312-391 - (Southwestern Bell Mobile Systems, Llc - Il - 312391) Areacode 312-393 - (Airtouch Paging - Illinois - 312393) Areacode 312-394 - (Ameritech Illinois - 312394) Areacode 312-395 - (At&t Local - 312395) Areacode 312-396 - (Ameritech Illinois - 312396) Areacode 312-397 - (Ameritech Illinois - 312397) Areacode 312-398 - (Metrocall - 312398) Areacode 312-399 - (Sprint Spectrum L.p. - 312399) Areacode 312-400 - (Ameritech Mobile Services, Inc. - 312400) Areacode 312-401 - (Southwestern Bell Mobile Systems, Llc - Il - 312401) Areacode 312-402 - (Southwestern Bell Mobile Systems, Llc - Il - 312402) Areacode 312-404 - (T-mobile Usa, Inc. - 312404) Areacode 312-405 - (Cellco Partnership Dba Verizon Wireless - Il - 312405) Areacode 312-407 - (Ameritech Illinois - 312407) Areacode 312-408 - (Ameritech Illinois - 312408) Areacode 312-409 - (Ameritech Illinois - 312409) Areacode 312-410 - (Ameritech Illinois - 312410) Areacode 312-413 - (Ameritech Illinois - 312413) Areacode 312-415 - (Cellco Partnership Dba Verizon Wireless - Il - 312415) Areacode 312-416 - (Mci Worldcom Communications, Inc. - Il - 312416) Areacode 312-417 - (Ameritech Illinois - 312417) Areacode 312-418 - (Arch Wireless Holdings, Inc. - 312418) Areacode 312-419 - (Ameritech Illinois - 312419) Areacode 312-420 - (At&t Wireless Services, Inc. - 312420) Areacode 312-421 - (Ameritech Illinois - 312421) Areacode 312-422 - (Ameritech Illinois - 312422) Areacode 312-423 - (Focal Communications Corp Of Illinois - 312423) Areacode 312-424 - (Ameritech Illinois - 312424) Areacode 312-425 - (Ameritech Illinois - 312425) Areacode 312-426 - (Metrocall - 312426) Areacode 312-427 - (Ameritech Illinois - 312427) Areacode 312-428 - (Southwestern Bell Mobile Systems, Llc - Il - 312428) Areacode 312-429 - (Global Crossing Local Services, Inc.-il - 312429) Areacode 312-431 - (Ameritech Illinois - 312431) Areacode 312-432 - (Ameritech Illinois - 312432) Areacode 312-433 - (Ameritech Illinois - 312433) Areacode 312-435 - (Ameritech Illinois - 312435) Areacode 312-436 - (Ameritech Illinois - 312436) Areacode 312-437 - (United States Cellular Corp. - 312437) Areacode 312-438 - (Source One Wireless - 312438) Areacode 312-439 - (Arch Wireless Holdings, Inc. - 312439) Areacode 312-440 - (Ameritech Illinois - 312440) Areacode 312-441 - (Ameritech Illinois - 312441) Areacode 312-442 - (Ameritech Illinois - 312442) Areacode 312-443 - (Ameritech Illinois - 312443) Areacode 312-444 - (Ameritech Illinois - 312444) Areacode 312-445 - (Corecomm Illinois, Inc. - Il - 312445) Areacode 312-446 - (Nextel Communications - 312446) Areacode 312-447 - (Ameritech Illinois - 312447) Areacode 312-448 - (Arch Wireless Holdings, Inc. - 312448) Areacode 312-449 - (Airtouch Paging - Illinois - 312449) Areacode 312-450 - (Southwestern Bell Mobile Systems, Llc - Il - 312450) Areacode 312-451 - (At&t Local - 312451) Areacode 312-452 - (Ameritech Mobile Services, Inc. - 312452) Areacode 312-453 - (Mci Worldcom Communications, Inc. - Il - 312453) Areacode 312-454 - (Ameritech Illinois - 312454) Areacode 312-455 - (Ameritech Illinois - 312455) Areacode 312-456 - (Ameritech Illinois - 312456) Areacode 312-457 - (Airtouch Paging - Illinois - 312457) Areacode 312-458 - (Ameritech Illinois - 312458) Areacode 312-459 - (Map Mobile Communications, Inc. - 312459) Areacode 312-460 - (Ameritech Illinois - 312460) Areacode 312-461 - (Ameritech Illinois - 312461) Areacode 312-462 - (Ameritech Illinois - 312462) Areacode 312-463 - (Ameritech Illinois - 312463) Areacode 312-464 - (Ameritech Illinois - 312464) Areacode 312-465 - ( - 312465) Areacode 312-466 - ( - 312466) Areacode 312-467 - ( - 312467) Areacode 312-469 - ( - 312469) Areacode 312-470 - ( - 312470) Areacode 312-474 - ( - 312474) Areacode 312-475 - ( - 312475) Areacode 312-476 - ( - 312476) Areacode 312-478 - ( - 312478) Areacode 312-479 - ( - 312479) Areacode 312-480 - (Southwestern Bell Mobile Systems, Llc - Il - 312480) Areacode 312-482 - (Ameritech Illinois - 312482) Areacode 312-484 - (Arch Wireless Holdings, Inc. - 312484) Areacode 312-485 - (Cellco Partnership Dba Verizon Wireless - Il - 312485) Areacode 312-489 - (Cellco Partnership Dba Verizon Wireless - Il - 312489) Areacode 312-490 - (Arch Wireless Holdings, Inc. - 312490) Areacode 312-491 - (Ameritech Illinois - 312491) Areacode 312-492 - (Ameritech Illinois - 312492) Areacode 312-493 - (T-mobile Usa, Inc. - 312493) Areacode 312-494 - (Ameritech Illinois - 312494) Areacode 312-495 - (Arch Wireless Holdings, Inc. - 312495) Areacode 312-496 - (Ameritech Illinois - 312496) Areacode 312-497 - (Cellco Partnership Dba Verizon Wireless - Il - 312497) Areacode 312-498 - (Sprint Spectrum L.p. - 312498) Areacode 312-499 - (Ameritech Illinois - 312499) Areacode 312-502 - (Cellco Partnership Dba Verizon Wireless - Il - 312502) Areacode 312-503 - (Focal Communications Corp Of Illinois - 312503) Areacode 312-504 - (Southwestern Bell Mobile Systems, Llc - Il - 312504) Areacode 312-505 - (Cellco Partnership Dba Verizon Wireless - Il - 312505) Areacode 312-507 - (Ameritech Illinois - 312507) Areacode 312-512 - (Arch Wireless Holdings, Inc. - 312512) Areacode 312-513 - (Southwestern Bell Mobile Systems, Llc - Il - 312513) Areacode 312-514 - (Ameritech Mobile Services, Inc. - 312514) Areacode 312-515 - (Cellco Partnership Dba Verizon Wireless - Il - 312515) Areacode 312-516 - (Ameritech Illinois - 312516) Areacode 312-519 - (Cellco Partnership Dba Verizon Wireless - Il - 312519) Areacode 312-520 - (Cellco Partnership Dba Verizon Wireless - Il - 312520) Areacode 312-521 - (At&t Local - 312521) Areacode 312-523 - (Sprint Spectrum L.p. - 312523) Areacode 312-525 - (Mcimetro, Ats, Inc. - 312525) Areacode 312-526 - (Ameritech Illinois - 312526) Areacode 312-527 - (Ameritech Illinois - 312527) Areacode 312-528 - (Ameritech Illinois - 312528) Areacode 312-529 - (At&t Local - 312529) Areacode 312-530 - (Weblink Wireless, Inc. - 312530) Areacode 312-532 - (Southwestern Bell Mobile Systems, Llc - Il - 312532) Areacode 312-533 - (Cellco Partnership Dba Verizon Wireless - Il - 312533) Areacode 312-537 - (Ameritech Illinois - 312537) Areacode 312-540 - (Ameritech Illinois - 312540) Areacode 312-541 - (Ameritech Illinois - 312541) Areacode 312-542 - (Ameritech Illinois - 312542) Areacode 312-543 - (At&t Wireless Services, Inc. - 312543) Areacode 312-544 - (Ameritech Illinois - 312544) Areacode 312-545 - (Sprint Spectrum L.p. - 312545) Areacode 312-546 - (Level 3 Communications, Llc - Il - 312546) Areacode 312-547 - (Southwestern Bell Mobile Systems, Llc - Il - 312547) Areacode 312-550 - (Cellco Partnership Dba Verizon Wireless - Il - 312550) Areacode 312-551 - (Ameritech Illinois - 312551) Areacode 312-552 - (Ameritech Illinois - 312552) Areacode 312-553 - (Ameritech Illinois - 312553) Areacode 312-554 - (Ameritech Illinois - 312554) Areacode 312-556 - (Ameritech Illinois - 312556) Areacode 312-557 - (Ameritech Illinois - 312557) Areacode 312-558 - (Ameritech Illinois - 312558) Areacode 312-559 - (Ameritech Illinois - 312559) Areacode 312-560 - (At&t Wireless Services, Inc. - 312560) Areacode 312-562 - (Weblink Wireless, Inc. - 312562) Areacode 312-563 - (Ameritech Illinois - 312563) Areacode 312-565 - (Ameritech Illinois - 312565) Areacode 312-566 - (Ameritech Illinois - 312566) Areacode 312-567 - (Ameritech Illinois - 312567) Areacode 312-568 - (Ameritech Illinois - 312568) Areacode 312-569 - (Ameritech Illinois - 312569) Areacode 312-570 - (Ameritech Illinois - 312570) Areacode 312-571 - (Arch Wireless Holdings, Inc. - 312571) Areacode 312-572 - (Ameritech Illinois - 312572) Areacode 312-573 - (Ameritech Illinois - 312573) Areacode 312-574 - (Ameritech Illinois - 312574) Areacode 312-575 - (Ameritech Illinois - 312575) Areacode 312-576 - (Southwestern Bell Mobile Systems, Llc - Il - 312576) Areacode 312-577 - (Mci Worldcom Communications, Inc. - Il - 312577) Areacode 312-578 - (Ameritech Illinois - 312578) Areacode 312-580 - (Ameritech Illinois - 312580) Areacode 312-582 - (Ameritech Illinois - 312582) Areacode 312-583 - (Ameritech Illinois - 312583) Areacode 312-587 - (Ameritech Illinois - 312587) Areacode 312-588 - (Ameritech Illinois - 312588) Areacode 312-589 - (Ameritech Illinois - 312589) Areacode 312-590 - (Cellco Partnership Dba Verizon Wireless - Il - 312590) Areacode 312-591 - (Ameritech Illinois - 312591) Areacode 312-592 - (Ameritech Illinois - 312592) Areacode 312-593 - (T-mobile Usa, Inc. - 312593) Areacode 312-595 - (Ameritech Illinois - 312595) Areacode 312-596 - (Teleport Communications Group - Chicago - 312596) Areacode 312-597 - (Source One Wireless - 312597) Areacode 312-599 - (Weblink Wireless, Inc. - 312599) Areacode 312-601 - (Mcimetro, Ats, Inc. - 312601) Areacode 312-602 - (Focal Communications Corp Of Illinois - 312602) Areacode 312-603 - (Ameritech Illinois - 312603) Areacode 312-604 - (Xo Illinois, Inc. - 312604) Areacode 312-605 - (Arch Wireless Holdings, Inc. - 312605) Areacode 312-606 - (Ameritech Illinois - 312606) Areacode 312-607 - (Southwestern Bell Mobile Systems, Llc - Il - 312607) Areacode 312-608 - (Southwestern Bell Mobile Systems, Llc - Il - 312608) Areacode 312-609 - (Ameritech Illinois - 312609) Areacode 312-610 - (Heartland Communications, Inc. - 312610) Areacode 312-612 - (Ameritech Illinois - 312612) Areacode 312-613 - (Southwestern Bell Mobile Systems, Llc - Il - 312613) Areacode 312-614 - (Metrocall - 312614) Areacode 312-616 - (Ameritech Illinois - 312616) Areacode 312-617 - (Nextel Communications - 312617) Areacode 312-618 - (Southwestern Bell Mobile Systems, Llc - Il - 312618) Areacode 312-619 - (Cellular Paging Usa, Inc. - 312619) Areacode 312-621 - (Ameritech Illinois - 312621) Areacode 312-622 - (At&t Wireless Services, Inc. - 312622) Areacode 312-623 - (Southwestern Bell Mobile Systems, Llc - Il - 312623) Areacode 312-624 - (Rcn Telecom Services Of Illinois, Inc. - Il - 312624) Areacode 312-625 - (Global Naps, Inc. - Il - 312625) Areacode 312-627 - (Ameritech Illinois - 312627) Areacode 312-628 - (Xo Illinois, Inc. - 312628) Areacode 312-629 - (Ameritech Illinois - 312629) Areacode 312-630 - (Ameritech Illinois - 312630) Areacode 312-632 - (Ameritech Illinois - 312632) Areacode 312-633 - (Ameritech Illinois - 312633) Areacode 312-634 - (Ameritech Illinois - 312634) Areacode 312-635 - (Global Crossing Local Services, Inc.-il - 312635) Areacode 312-636 - (Cellco Partnership Dba Verizon Wireless - Il - 312636) Areacode 312-637 - (Focal Communications Corp Of Illinois - 312637) Areacode 312-638 - (Focal Communications Corp Of Illinois - 312638) Areacode 312-639 - (Arch Wireless Holdings, Inc. - 312639) Areacode 312-640 - (Ameritech Illinois - 312640) Areacode 312-641 - (Ameritech Illinois - 312641) Areacode 312-642 - (Ameritech Illinois - 312642) Areacode 312-643 - (Rcn Telecom Services Of Illinois, Inc. - Il - 312643) Areacode 312-644 - (Ameritech Illinois - 312644) Areacode 312-645 - (Ameritech Illinois - 312645) Areacode 312-647 - (Arch Wireless Holdings, Inc. - 312647) Areacode 312-648 - (Ameritech Illinois - 312648) Areacode 312-649 - (Ameritech Illinois - 312649) Areacode 312-650 - (Rcn Telecom Services Of Illinois, Inc. - Il - 312650) Areacode 312-651 - (Ameritech Illinois - 312651) Areacode 312-652 - (Ameritech Illinois - 312652) Areacode 312-653 - (Ameritech Illinois - 312653) Areacode 312-654 - (Ameritech Illinois - 312654) Areacode 312-655 - (Ameritech Illinois - 312655) Areacode 312-656 - (Nextel Communications - 312656) Areacode 312-657 - (Arch Wireless Holdings, Inc. - 312657) Areacode 312-658 - (Ameritech Illinois - 312658) Areacode 312-659 - (Southwestern Bell Mobile Systems, Llc - Il - 312659) Areacode 312-660 - (Teleport Communications Group - Chicago - 312660) Areacode 312-661 - (Ameritech Illinois - 312661) Areacode 312-662 - (Ameritech Illinois - 312662) Areacode 312-663 - (Ameritech Illinois - 312663) Areacode 312-664 - (Ameritech Illinois - 312664) Areacode 312-665 - (Teleport Communications Group - Chicago - 312665) Areacode 312-666 - (Ameritech Illinois - 312666) Areacode 312-669 - (Ameritech Illinois - 312669) Areacode 312-670 - (Ameritech Illinois - 312670) Areacode 312-671 - (United States Cellular Corp. - 312671) Areacode 312-672 - (Ameritech Illinois - 312672) Areacode 312-673 - (Winstar Communications, Llc - Il - 312673) Areacode 312-674 - (Ameritech Illinois - 312674) Areacode 312-675 - (Ameritech Illinois - 312675) Areacode 312-677 - (Arch Wireless Holdings, Inc. - 312677) Areacode 312-678 - (Heartland Communications, Inc. - 312678) Areacode 312-679 - (Airtouch Paging - Illinois - 312679) Areacode 312-680 - (Arch Wireless Holdings, Inc. - 312680) Areacode 312-681 - (Ameritech Illinois - 312681) Areacode 312-682 - (Arch Wireless Holdings, Inc. - 312682) Areacode 312-683 - (Ameritech Illinois - 312683) Areacode 312-685 - (United States Cellular Corp. - 312685) Areacode 312-688 - (Metrocall - 312688) Areacode 312-689 - (Ameritech Mobile Services, Inc. - 312689) Areacode 312-690 - (Source One Wireless - 312690) Areacode 312-691 - (Beepermart, Inc. - 312691) Areacode 312-692 - (Ameritech Illinois - 312692) Areacode 312-693 - (Ameritech Illinois - 312693) Areacode 312-694 - (Ameritech Illinois - 312694) Areacode 312-695 - (Ameritech Illinois - 312695) Areacode 312-696 - (Ameritech Illinois - 312696) Areacode 312-697 - (Ameritech Illinois - 312697) Areacode 312-698 - (Focal Communications Corp Of Illinois - 312698) Areacode 312-701 - (Ameritech Illinois - 312701) Areacode 312-703 - (Ameritech Illinois - 312703) Areacode 312-704 - (Ameritech Illinois - 312704) Areacode 312-705 - (Teleport Communications Group - Chicago - 312705) Areacode 312-706 - (Teleport Communications Group - Chicago - 312706) Areacode 312-707 - (Ameritech Illinois - 312707) Areacode 312-709 - (Source One Wireless - 312709) Areacode 312-710 - (Ameritech Illinois - 312710) Areacode 312-712 - (Ameritech Illinois - 312712) Areacode 312-713 - (Ameritech Mobile Services, Inc. - 312713) Areacode 312-714 - (Ameritech Illinois - 312714) Areacode 312-715 - (Ameritech Illinois - 312715) Areacode 312-716 - (Ameritech Illinois - 312716) Areacode 312-718 - (Cellco Partnership Dba Verizon Wireless - Il - 312718) Areacode 312-719 - (United States Cellular Corp. - 312719) Areacode 312-720 - (Cellco Partnership Dba Verizon Wireless - Il - 312720) Areacode 312-724 - (Heartland Communications, Inc. - 312724) Areacode 312-726 - (Ameritech Illinois - 312726) Areacode 312-727 - (Ameritech Illinois - 312727) Areacode 312-729 - (Ameritech Illinois - 312729) Areacode 312-730 - (At&t Local - 312730) Areacode 312-731 - (At&t Local - 312731) Areacode 312-732 - (Ameritech Illinois - 312732) Areacode 312-733 - (Ameritech Illinois - 312733) Areacode 312-735 - (Nextel Communications - 312735) Areacode 312-737 - (Ameritech Illinois - 312737) Areacode 312-738 - (Ameritech Illinois - 312738) Areacode 312-739 - (Ameritech Illinois - 312739) Areacode 312-740 - (Ameritech Mobile Services, Inc. - 312740) Areacode 312-742 - (Ameritech Illinois - 312742) Areacode 312-743 - (Ameritech Illinois - 312743) Areacode 312-744 - (Ameritech Illinois - 312744) Areacode 312-745 - (Ameritech Illinois - 312745) Areacode 312-746 - (Ameritech Illinois - 312746) Areacode 312-747 - (Ameritech Illinois - 312747) Areacode 312-748 - (Arch Wireless Holdings, Inc. - 312748) Areacode 312-750 - (Ameritech Illinois - 312750) Areacode 312-751 - (Ameritech Illinois - 312751) Areacode 312-752 - (Focal Communications Corp Of Illinois - 312752) Areacode 312-753 - (Rcn Telecom Services Of Illinois, Inc. - Il - 312753) Areacode 312-755 - (Ameritech Illinois - 312755) Areacode 312-756 - (Ameritech Illinois - 312756) Areacode 312-758 - (Cellco Partnership Dba Verizon Wireless - Il - 312758) Areacode 312-759 - (Ameritech Illinois - 312759) Areacode 312-760 - (Ameritech Mobile Services, Inc. - 312760) Areacode 312-762 - (Ameritech Illinois - 312762) Areacode 312-765 - (Ameritech Illinois - 312765) Areacode 312-766 - (Source One Wireless - 312766) Areacode 312-768 - (At&t Local - 312768) Areacode 312-769 - (Beepermart, Inc. - 312769) Areacode 312-770 - (Ameritech Illinois - 312770) Areacode 312-771 - (Cellco Partnership Dba Verizon Wireless - Il - 312771) Areacode 312-775 - (Ameritech Illinois - 312775) Areacode 312-777 - (Teleport Communications Group - Chicago - 312777) Areacode 312-780 - (Mci Worldcom Communications, Inc. - Il - 312780) Areacode 312-781 - (Ameritech Illinois - 312781) Areacode 312-782 - (Ameritech Illinois - 312782) Areacode 312-786 - (Ameritech Illinois - 312786) Areacode 312-787 - (Ameritech Illinois - 312787) Areacode 312-788 - (Ameritech Illinois - 312788) Areacode 312-789 - (Ameritech Illinois - 312789) Areacode 312-790 - (Ameritech Illinois - 312790) Areacode 312-791 - (Ameritech Illinois - 312791) Areacode 312-793 - (Ameritech Illinois - 312793) Areacode 312-794 - (Rcn Telecom Services Of Illinois, Inc. - Il - 312794) Areacode 312-795 - (Ameritech Illinois - 312795) Areacode 312-796 - (Ameritech Illinois - 312796) Areacode 312-797 - (Ameritech Illinois - 312797) Areacode 312-798 - (Ameritech Illinois - 312798) Areacode 312-799 - (Ameritech Illinois - 312799) Areacode 312-801 - (Source One Wireless - 312801) Areacode 312-802 - (Cellco Partnership Dba Verizon Wireless - Il - 312802) Areacode 312-803 - (Mci Worldcom Communications, Inc. - Il - 312803) Areacode 312-804 - (T-mobile Usa, Inc. - 312804) Areacode 312-805 - (Cellco Partnership Dba Verizon Wireless - Il - 312805) Areacode 312-806 - (Southwestern Bell Mobile Systems, Llc - Il - 312806) Areacode 312-807 - (Ameritech Illinois - 312807) Areacode 312-808 - (Ameritech Illinois - 312808) Areacode 312-810 - (Southwestern Bell Mobile Systems, Llc - Il - 312810) Areacode 312-812 - (Ameritech Illinois - 312812) Areacode 312-813 - (Southwestern Bell Mobile Systems, Llc - Il - 312813) Areacode 312-814 - (Ameritech Illinois - 312814) Areacode 312-817 - (Ameritech Illinois - 312817) Areacode 312-818 - (Source One Wireless - 312818) Areacode 312-819 - (Ameritech Illinois - 312819) Areacode 312-820 - (Arch Wireless Holdings, Inc. - 312820) Areacode 312-821 - (Mci Worldcom Communications, Inc. - Il - 312821) Areacode 312-822 - (Ameritech Illinois - 312822) Areacode 312-823 - (Ameritech Illinois - 312823) Areacode 312-824 - (Heartland Communications, Inc. - 312824) Areacode 312-825 - (Heartland Communications, Inc. - 312825) Areacode 312-826 - (Heartland Communications, Inc. - 312826) Areacode 312-827 - (Ameritech Illinois - 312827) Areacode 312-828 - (Ameritech Illinois - 312828) Areacode 312-829 - (Ameritech Illinois - 312829) Areacode 312-830 - (Arch Wireless Holdings, Inc. - 312830) Areacode 312-831 - (Ameritech Illinois - 312831) Areacode 312-832 - (Ameritech Illinois - 312832) Areacode 312-833 - (Cellco Partnership Dba Verizon Wireless - Il - 312833) Areacode 312-834 - (Ameritech Illinois - 312834) Areacode 312-835 - (Cellco Partnership Dba Verizon Wireless - Il - 312835) Areacode 312-836 - (Ameritech Illinois - 312836) Areacode 312-837 - (Arch Wireless Holdings, Inc. - 312837) Areacode 312-838 - (Map Mobile Communications, Inc. - 312838) Areacode 312-839 - (Ameritech Mobile Services, Inc. - 312839) Areacode 312-840 - (Ameritech Illinois - 312840) Areacode 312-841 - (Southwestern Bell Mobile Systems, Llc - Il - 312841) Areacode 312-842 - (Ameritech Illinois - 312842) Areacode 312-845 - (Ameritech Illinois - 312845) Areacode 312-846 - (Ameritech Illinois - 312846) Areacode 312-848 - (Cellco Partnership Dba Verizon Wireless - Il - 312848) Areacode 312-849 - (Ameritech Illinois - 312849) Areacode 312-850 - (Ameritech Illinois - 312850) Areacode 312-851 - (Heartland Communications, Inc. - 312851) Areacode 312-852 - (Southwestern Bell Mobile Systems, Llc - Il - 312852) Areacode 312-853 - (Ameritech Illinois - 312853) Areacode 312-854 - (Rcn Telecom Services Of Illinois, Inc. - Il - 312854) Areacode 312-855 - (Ameritech Illinois - 312855) Areacode 312-856 - (Ameritech Illinois - 312856) Areacode 312-857 - (Ameritech Illinois - 312857) Areacode 312-859 - (Cellco Partnership Dba Verizon Wireless - Il - 312859) Areacode 312-860 - (Southwestern Bell Mobile Systems, Llc - Il - 312860) Areacode 312-861 - (Ameritech Illinois - 312861) Areacode 312-863 - (Ovation Communications Of Illinois, Inc. - 312863) Areacode 312-864 - (Ameritech Illinois - 312864) Areacode 312-867 - (Ameritech Illinois - 312867) Areacode 312-869 - (Ameritech Illinois - 312869) Areacode 312-870 - (Winstar Communications, Llc - Il - 312870) Areacode 312-873 - (Mci Worldcom Communications, Inc. - Il - 312873) Areacode 312-875 - (Ameritech Illinois - 312875) Areacode 312-876 - (Ameritech Illinois - 312876) Areacode 312-877 - (Source One Wireless - 312877) Areacode 312-879 - (Ameritech Illinois - 312879) Areacode 312-880 - (Ameritech Illinois - 312880) Areacode 312-881 - (Ovation Communications Of Illinois, Inc. - 312881) Areacode 312-882 - (Cellco Partnership Dba Verizon Wireless - Il - 312882) Areacode 312-884 - (Ovation Communications Of Illinois, Inc. - 312884) Areacode 312-886 - (Ameritech Illinois - 312886) Areacode 312-887 - (Ameritech Illinois - 312887) Areacode 312-890 - (Sprint Spectrum L.p. - 312890) Areacode 312-891 - (Arch Wireless Holdings, Inc. - 312891) Areacode 312-892 - (Focal Communications Corp Of Illinois - 312892) Areacode 312-893 - (Focal Communications Corp Of Illinois - 312893) Areacode 312-894 - (Mcimetro, Ats, Inc. - 312894) Areacode 312-895 - (Focal Communications Corp Of Illinois - 312895) Areacode 312-896 - (Focal Communications Corp Of Illinois - 312896) Areacode 312-897 - (Source One Wireless - 312897) Areacode 312-898 - (Cellco Partnership Dba Verizon Wireless - Il - 312898) Areacode 312-899 - (Ameritech Illinois - 312899) Areacode 312-901 - (Metrocall - 312901) Areacode 312-902 - (Ameritech Illinois - 312902) Areacode 312-903 - (Ameritech Mobile Services, Inc. - 312903) Areacode 312-904 - (Ameritech Illinois - 312904) Areacode 312-905 - (Ameritech Illinois - 312905) Areacode 312-906 - (Ameritech Illinois - 312906) Areacode 312-907 - (Nextel Communications - 312907) Areacode 312-908 - (Ameritech Illinois - 312908) Areacode 312-909 - (Cellco Partnership Dba Verizon Wireless - Il - 312909) Areacode 312-910 - (Weblink Wireless, Inc. - 312910) Areacode 312-912 - (Ameritech Illinois - 312912) Areacode 312-913 - (Ameritech Illinois - 312913) Areacode 312-914 - (Cellco Partnership Dba Verizon Wireless - Il - 312914) Areacode 312-915 - (Ameritech Illinois - 312915) Areacode 312-916 - (Airtouch Paging - Illinois - 312916) Areacode 312-917 - (Ameritech Illinois - 312917) Areacode 312-919 - (Cellco Partnership Dba Verizon Wireless - Il - 312919) Areacode 312-920 - (Ameritech Illinois - 312920) Areacode 312-922 - (Ameritech Illinois - 312922) Areacode 312-923 - (Ameritech Illinois - 312923) Areacode 312-924 - (Paetec Communications, Inc. - Il - 312924) Areacode 312-925 - (At&t Wireless Services, Inc. - 312925) Areacode 312-926 - (Ameritech Illinois - 312926) Areacode 312-927 - (T-mobile Usa, Inc. - 312927) Areacode 312-928 - (Ameritech Illinois - 312928) Areacode 312-930 - (Ameritech Illinois - 312930) Areacode 312-931 - (Ameritech Illinois - 312931) Areacode 312-932 - (Ameritech Illinois - 312932) Areacode 312-933 - (Sprint Spectrum L.p. - 312933) Areacode 312-935 - (Ameritech Illinois - 312935) Areacode 312-936 - (Ameritech Illinois - 312936) Areacode 312-937 - (Arch Wireless Holdings, Inc. - 312937) Areacode 312-938 - (Ameritech Illinois - 312938) Areacode 312-939 - (Ameritech Illinois - 312939) Areacode 312-940 - (Arch Wireless Holdings, Inc. - 312940) Areacode 312-941 - (Arch Wireless Holdings, Inc. - 312941) Areacode 312-942 - (Ameritech Illinois - 312942) Areacode 312-943 - (Ameritech Illinois - 312943) Areacode 312-944 - (Ameritech Illinois - 312944) Areacode 312-945 - (Ameritech Illinois - 312945) Areacode 312-946 - (Ameritech Illinois - 312946) Areacode 312-948 - (Ovation Communications Of Illinois, Inc. - 312948) Areacode 312-949 - (Ameritech Illinois - 312949) Areacode 312-951 - (Ameritech Illinois - 312951) Areacode 312-952 - (At&t Wireless Services, Inc. - 312952) Areacode 312-953 - (At&t Wireless Services, Inc. - 312953) Areacode 312-954 - (Ameritech Illinois - 312954) Areacode 312-955 - (Rcn Telecom Services Of Illinois, Inc. - Il - 312955) Areacode 312-957 - (Ameritech Illinois - 312957) Areacode 312-960 - (Ameritech Illinois - 312960) Areacode 312-961 - (At&t Wireless Services, Inc. - 312961) Areacode 312-962 - (Global Crossing Local Services, Inc.-il - 312962) Areacode 312-963 - (Heartland Communications, Inc. - 312963) Areacode 312-964 - (Weblink Wireless, Inc. - 312964) Areacode 312-965 - (Cellco Partnership Dba Verizon Wireless - Il - 312965) Areacode 312-970 - (Ameritech Illinois - 312970) Areacode 312-971 - (Geotek Communications, Inc. - 312971) Areacode 312-972 - (Southwestern Bell Mobile Systems, Llc - Il - 312972) Areacode 312-974 - (Ameritech Illinois - 312974) Areacode 312-975 - (Map Mobile Communications, Inc. - 312975) Areacode 312-977 - (Ameritech Illinois - 312977) Areacode 312-979 - (Ameritech Illinois - 312979) Areacode 312-980 - (Teleport Communications Group - Chicago - 312980) Areacode 312-981 - (Ovation Communications Of Illinois, Inc. - 312981) Areacode 312-982 - (Arch Wireless Holdings, Inc. - 312982) Areacode 312-983 - (Ameritech Illinois - 312983) Areacode 312-984 - (Ameritech Illinois - 312984) Areacode 312-985 - (Ovation Communications Of Illinois, Inc. - 312985) Areacode 312-986 - (Ameritech Illinois - 312986) Areacode 312-987 - (Ameritech Illinois - 312987) Areacode 312-988 - (Ameritech Illinois - 312988) Areacode 312-992 - (Ameritech Illinois - 312992) Areacode 312-993 - (Ameritech Illinois - 312993) Areacode 312-994 - (Ovation Communications Of Illinois, Inc. - 312994) Areacode 312-995 - (Mcleodusa Telecommunications Services, Inc.- Il - 312995) Areacode 312-996 - (Ameritech Illinois - 312996) Areacode 312-997 - (Ameritech Illinois - 312997) Areacode 312-998 - (Multi Computer Systems, Inc. - 312998) |
| ROSELLE | Areacode 312-231 - (Southwestern Bell Mobile Systems, Llc - Il - 312231) Areacode 312-354 - (Southwestern Bell Mobile Systems, Llc - Il - 312354) |
| HINSDALE | Areacode 312-301 - (Southwestern Bell Mobile Systems, Llc - Il - 312301) Areacode 312-304 - (Southwestern Bell Mobile Systems, Llc - Il - 312304) Areacode 312-314 - (Southwestern Bell Mobile Systems, Llc - Il - 312314) Areacode 312-352 - (Southwestern Bell Mobile Systems, Llc - Il - 312352) Areacode 312-510 - (Southwestern Bell Mobile Systems, Llc - Il - 312510) Areacode 312-531 - (Southwestern Bell Mobile Systems, Llc - Il - 312531) Areacode 312-699 - (Southwestern Bell Mobile Systems, Llc - Il - 312699) Areacode 312-749 - (Southwestern Bell Mobile Systems, Llc - Il - 312749) Areacode 312-816 - (Southwestern Bell Mobile Systems, Llc - Il - 312816) Areacode 312-844 - (Southwestern Bell Mobile Systems, Llc - Il - 312844) Areacode 312-990 - (Southwestern Bell Mobile Systems, Llc - Il - 312990) |
| LA GRANGE PARK | Areacode 312-295 - (Arch Wireless Holdings, Inc. - 312295) Areacode 312-318 - (Cellco Partnership Dba Verizon Wireless - Il - 312318) Areacode 312-366 - (Arch Wireless Holdings, Inc. - 312366) Areacode 312-367 - (Arch Wireless Holdings, Inc. - 312367) Areacode 312-403 - (Cellco Partnership Dba Verizon Wireless - Il - 312403) Areacode 312-501 - (Cellco Partnership Dba Verizon Wireless - Il - 312501) Areacode 312-517 - (Arch Wireless Holdings, Inc. - 312517) Areacode 312-717 - (Arch Wireless Holdings, Inc. - 312717) Areacode 312-968 - (Cellco Partnership Dba Verizon Wireless - Il - 312968) Areacode 312-969 - (Cellco Partnership Dba Verizon Wireless - Il - 312969) |
| NORTHBROOK | Areacode 312-209 - (Cellco Partnership Dba Verizon Wireless - Il - 312209) Areacode 312-305 - (Cellco Partnership Dba Verizon Wireless - Il - 312305) Areacode 312-310 - (Cellco Partnership Dba Verizon Wireless - Il - 312310) Areacode 312-934 - (Heartland Communications, Inc. - 312934) Areacode 312-956 - (Source One Wireless - 312956) |
| WHEELING | Areacode 312-215 - (Southwestern Bell Mobile Systems, Llc - Il - 312215) Areacode 312-246 - (Southwestern Bell Mobile Systems, Llc - Il - 312246) Areacode 312-303 - (Southwestern Bell Mobile Systems, Llc - Il - 312303) Areacode 312-317 - (Southwestern Bell Mobile Systems, Llc - Il - 312317) Areacode 312-331 - (Southwestern Bell Mobile Systems, Llc - Il - 312331) Areacode 312-406 - (Southwestern Bell Mobile Systems, Llc - Il - 312406) Areacode 312-412 - (Southwestern Bell Mobile Systems, Llc - Il - 312412) Areacode 312-518 - (Southwestern Bell Mobile Systems, Llc - Il - 312518) Areacode 312-524 - (Southwestern Bell Mobile Systems, Llc - Il - 312524) Areacode 312-615 - (Southwestern Bell Mobile Systems, Llc - Il - 312615) Areacode 312-865 - (Southwestern Bell Mobile Systems, Llc - Il - 312865) Areacode 312-991 - (Southwestern Bell Mobile Systems, Llc - Il - 312991) |
Other Information about areacode 312 in Illinois
- State Information Resources for Illinois (Source: State Information)
- CitySites Pages for Illinois (Source: Official CitySites)
- Wikipedia Article on Areacode 312 (Source: Wikipedia)