What is the area code for Chicago, IL?

Chicago uses 3 area codes: 773, 312 and 872. Different parts of the area are served by different codes.

What time zone is Chicago in?

Chicago is in the Central time zone.

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Chicago, IL Area Codes

Chicago, Illinois (population 2,731,585) uses area codes 773, 312 and 872.

Area code773

Area code312

Area code872

Time zoneCentral

Local time now…

Chicago and nearby cities in area code 773

Carriers with Chicago numbers

1813 prefixes are assigned to the Chicago exchange: 32% mobile, 22% VoIP and cable, 46% landline.

Carrier	Prefixes
AT&T (Illinois Bell)	594
T-Mobile	300
AT&T Mobility	171
Verizon Wireless	114
Onvoy (Sinch)	102
Verizon Business (MCImetro)	87
Lumen (Level 3)	75
AT&T (Teleport)	52

Area codes used in Chicago

Area code	Prefixes serving Chicago	Main carriers in this code
773	786	AT&T (Illinois Bell), T-Mobile, AT&T Mobility
312	748	AT&T (Illinois Bell), AT&T Mobility, T-Mobile
872	279	T-Mobile, Onvoy (Sinch), AT&T Mobility

Chicago phone number prefixes

Numbers starting with these first six digits were originally assigned to the Chicago exchange.

773-200 Five9
773-201 Spok
773-202 AT&T (Illinois Bell)
773-203 AT&T Mobility
773-204 AT&T (Teleport)
773-205 AT&T (Illinois Bell)
773-206 AT&T Mobility
773-207 Onvoy (Sinch)
773-208 AT&T Mobility
773-209 T-Mobile
773-210 AT&T (Illinois Bell)
773-212 Spok
773-213 AT&T Mobility
773-214 Spok
773-215 Spok
773-216 T-Mobile
773-217 AT&T Mobility
773-218 AT&T Mobility
773-219 T-Mobile
773-220 T-Mobile
773-221 AT&T (Illinois Bell)
773-222 Spok
773-223 Spok
773-224 AT&T (Illinois Bell)
773-225 T-Mobile
773-226 T-Mobile
773-227 AT&T (Illinois Bell)
773-228 Spok
773-229 AT&T (Illinois Bell)
773-230 AT&T Mobility
773-231 Lumen (Level 3)
773-232 Onvoy (Sinch)
773-233 AT&T (Illinois Bell)
773-234 Bandwidth
773-235 AT&T (Illinois Bell)
773-236 T-Mobile
773-237 AT&T (Illinois Bell)
773-238 AT&T (Illinois Bell)
773-239 AT&T (Illinois Bell)
773-240 T-Mobile
773-241 AT&T (Illinois Bell)
773-242 AT&T (Illinois Bell)
773-243 Verizon Business (MCImetro)
773-244 AT&T (Illinois Bell)
773-245 Bandwidth
773-246 Indiana Paging Network
773-247 AT&T (Illinois Bell)
773-248 AT&T (Illinois Bell)
773-249 Lumen (Level 3)
773-250 Verizon Business (MCImetro)
773-251 AT&T Mobility
773-252 AT&T (Illinois Bell)
773-253 AT&T (Teleport)
773-254 AT&T (Illinois Bell)
773-255 AT&T Mobility
773-256 AT&T (Illinois Bell)
773-257 AT&T (Illinois Bell)
773-258 Spok
773-259 AT&T Mobility
773-260 AT&T (Illinois Bell)
773-261 AT&T (Illinois Bell)
773-262 AT&T (Illinois Bell)
773-263 T-Mobile
773-264 AT&T (Illinois Bell)
773-265 AT&T (Illinois Bell)
773-266 AT&T Mobility
773-267 AT&T (Illinois Bell)
773-268 AT&T (Illinois Bell)
773-269 AT&T (Teleport)
773-270 Metropcs
773-271 AT&T (Illinois Bell)
773-272 Verizon Business (MCImetro)
773-273 AT&T (Illinois Bell)
773-274 AT&T (Illinois Bell)
773-275 AT&T (Illinois Bell)
773-276 AT&T (Illinois Bell)
773-277 AT&T (Illinois Bell)
773-278 AT&T (Illinois Bell)
773-279 AT&T (Illinois Bell)
773-280 T-Mobile
773-281 AT&T (Illinois Bell)
773-282 AT&T (Illinois Bell)
773-283 AT&T (Illinois Bell)
773-284 AT&T (Illinois Bell)
773-285 AT&T (Illinois Bell)
773-286 AT&T (Illinois Bell)
773-287 AT&T (Illinois Bell)
773-288 AT&T (Illinois Bell)
773-289 Verizon Business (MCImetro)
773-290 Lumen (Level 3)
773-291 AT&T (Illinois Bell)
773-292 AT&T (Illinois Bell)
773-293 AT&T (Illinois Bell)
773-294 AT&T Mobility
773-295 Verizon Business (MCImetro)
773-296 AT&T (Illinois Bell)
773-297 T-Mobile
773-298 AT&T (Illinois Bell)
773-299 Verizon Business (MCImetro)
773-300 Onvoy (Sinch)
773-301 T-Mobile
773-302 T-Mobile
773-303 Verizon Business (MCImetro)
773-304 Verizon Business (MCImetro)
773-305 Verizon Business (MCImetro)
773-306 AT&T (Teleport)
773-307 AT&T Mobility
773-308 First Communications
773-309 Paetec Itel
773-310 T-Mobile
773-312 T-Mobile
773-313 Verizon Business (MCImetro)
773-314 Verizon Business (MCImetro)
773-315 AT&T Mobility
773-316 AT&T Mobility
773-317 T-Mobile
773-318 Verizon Wireless
773-319 T-Mobile
773-320 AT&T Mobility
773-321 Lumen (Level 3)
773-322 T-Mobile
773-323 American Messaging Services
773-324 AT&T (Illinois Bell)
773-325 AT&T (Illinois Bell)
773-326 Lumen (Level 3)
773-327 AT&T (Illinois Bell)
773-328 First Communications
773-329 AT&T (Teleport)
773-330 AT&T Mobility
773-331 T-Mobile
773-332 Verizon Wireless
773-333 American Messaging Services
773-334 AT&T (Illinois Bell)
773-335 AT&T Mobility
773-336 First Communications
773-337 Verizon Business (MCImetro)
773-338 AT&T (Illinois Bell)
773-339 Verizon Wireless
773-340 Onvoy (Sinch)
773-341 First Communications
773-342 AT&T (Illinois Bell)
773-343 Verizon Wireless
773-344 Verizon Business (MCImetro)
773-345 Verizon Business (MCImetro)
773-346 Verizon Business (MCImetro)
773-347 Verizon Business (MCImetro)
773-348 AT&T (Illinois Bell)
773-349 Verizon Business (MCImetro)
773-350 Verizon Wireless
773-351 AT&T Mobility
773-352 Onvoy (Sinch)
773-353 Lumen (Level 3)
773-354 T-Mobile
773-355 Paetec Itel
773-356 AT&T (Illinois Bell)
773-357 First Communications
773-358 Verizon Business (MCImetro)
773-359 Verizon Business (MCImetro)
773-360 Lumen (Level 3)
773-361 AT&T (Illinois Bell)
773-362 Paetec Itel
773-363 AT&T (Illinois Bell)
773-364 Paetec Itel
773-365 Verizon Business (MCImetro)
773-366 T-Mobile
773-367 T-Mobile
773-368 T-Mobile
773-369 AT&T Mobility
773-370 T-Mobile
773-371 AT&T (Illinois Bell)
773-372 Verizon Wireless
773-373 AT&T (Illinois Bell)
773-374 AT&T (Illinois Bell)
773-375 AT&T (Illinois Bell)
773-376 AT&T (Illinois Bell)
773-377 AT&T (Teleport)
773-378 AT&T (Illinois Bell)
773-379 AT&T (Illinois Bell)
773-380 AT&T (Illinois Bell)
773-381 AT&T (Illinois Bell)
773-382 Paetec Itel
773-383 AT&T Mobility
773-384 AT&T (Illinois Bell)
773-385 AT&T (Illinois Bell)
773-386 T-Mobile
773-387 T-Mobile
773-388 AT&T (Illinois Bell)
773-389 Bandwidth
773-390 Verizon Wireless
773-391 AT&T Mobility
773-392 T-Mobile
773-393 Spok
773-394 AT&T (Illinois Bell)
773-395 AT&T (Illinois Bell)
773-396 Paetec Itel
773-397 AT&T Mobility
773-398 T-Mobile
773-399 AT&T (Illinois Bell)
773-400 American Messaging Services
773-401 AT&T Mobility
773-402 AT&T Mobility
773-403 T-Mobile
773-404 AT&T (Illinois Bell)
773-405 Verizon Wireless
773-406 T-Mobile
773-407 T-Mobile
773-408 T-Mobile
773-409 AT&T (Teleport)
773-410 T-Mobile
773-412 T-Mobile
773-413 AT&T (Teleport)
773-414 T-Mobile
773-415 Verizon Wireless
773-416 T-Mobile
773-417 Comcast (Xfinity)
773-418 T-Mobile
773-419 T-Mobile
773-420 AT&T (Teleport)
773-421 Verizon Wireless
773-422 Verizon Wireless
773-423 Verizon Business (MCImetro)
773-424 AT&T (Teleport)
773-425 T-Mobile
773-426 T-Mobile
773-427 AT&T (Illinois Bell)
773-428 AT&T Mobility
773-429 AT&T (Illinois Bell)
773-430 T-Mobile
773-431 AT&T Mobility
773-432 First Communications
773-433 T-Mobile
773-434 AT&T (Illinois Bell)
773-435 Verizon Business (MCImetro)
773-436 AT&T (Illinois Bell)
773-437 AT&T (Teleport)
773-438 Spok
773-439 Rcn Telecom Services Of Illinios
773-440 Metropcs
773-441 AT&T Mobility
773-442 Verizon Business (MCImetro)
773-443 T-Mobile
773-444 AT&T (Illinois Bell)
773-445 AT&T (Illinois Bell)
773-446 Lumen (Level 3)
773-447 T-Mobile
773-448 Onvoy (Sinch)
773-449 Rcn Telecom Services Of Illinios
773-450 AT&T Mobility
773-451 AT&T (Illinois Bell)
773-452 Verizon Wireless
773-453 Verizon Business (MCImetro)
773-454 T-Mobile
773-455 Verizon Business (MCImetro)
773-456 AT&T Mobility
773-457 T-Mobile
773-458 Verizon Business (MCImetro)
773-459 T-Mobile
773-460 Onvoy (Sinch)
773-461 T-Mobile
773-462 AT&T (Illinois Bell)
773-463 AT&T (Illinois Bell)
773-464 Spok
773-465 AT&T (Illinois Bell)
773-466 Verizon Business (MCImetro)
773-467 AT&T (Illinois Bell)
773-468 AT&T (Illinois Bell)
773-469 T-Mobile
773-470 Verizon Business (MCImetro)
773-471 AT&T (Illinois Bell)
773-472 AT&T (Illinois Bell)
773-473 AT&T (Illinois Bell)
773-474 Paetec Itel
773-475 AT&T (Teleport)
773-476 AT&T (Illinois Bell)
773-477 AT&T (Illinois Bell)
773-478 AT&T (Illinois Bell)
773-479 AT&T (Illinois Bell)
773-480 AT&T Mobility
773-481 AT&T (Illinois Bell)
773-482 Paetec Itel
773-483 AT&T (Illinois Bell)
773-484 Verizon Wireless
773-485 Verizon Wireless
773-486 AT&T (Illinois Bell)
773-487 AT&T (Illinois Bell)
773-488 AT&T (Illinois Bell)
773-489 AT&T (Illinois Bell)
773-490 AT&T Mobility
773-491 T-Mobile
773-492 Bandwidth
773-493 AT&T (Illinois Bell)
773-494 T-Mobile
773-495 T-Mobile
773-496 Paetec Itel
773-497 Verizon Wireless
773-498 AT&T (Teleport)
773-499 T-Mobile
773-500 Onvoy (Sinch)
773-501 T-Mobile
773-502 Verizon Wireless
773-503 T-Mobile
773-504 AT&T Mobility
773-505 Verizon Wireless
773-506 AT&T (Illinois Bell)
773-507 T-Mobile
773-508 AT&T (Illinois Bell)
773-509 AT&T (Illinois Bell)
773-510 T-Mobile
773-512 T-Mobile
773-513 AT&T Mobility
773-514 AT&T Mobility
773-515 Verizon Wireless
773-516 Peerless Network
773-517 T-Mobile
773-518 Verizon Wireless
773-519 Verizon Wireless
773-520 Verizon Wireless
773-521 AT&T (Illinois Bell)
773-522 AT&T (Illinois Bell)
773-523 AT&T (Illinois Bell)
773-524 Lumen (Level 3)
773-525 AT&T (Illinois Bell)
773-526 Paetec Itel
773-527 Lumen (Level 3)
773-528 AT&T (Illinois Bell)
773-529 AT&T (Illinois Bell)
773-530 Comcast (Xfinity)
773-531 T-Mobile
773-532 AT&T Mobility
773-533 AT&T (Illinois Bell)
773-534 AT&T (Illinois Bell)
773-535 AT&T (Illinois Bell)
773-536 AT&T (Illinois Bell)
773-537 First Communications
773-538 AT&T (Illinois Bell)
773-539 AT&T (Illinois Bell)
773-540 T-Mobile
773-541 Lumen (Level 3)
773-542 AT&T (Illinois Bell)
773-543 T-Mobile
773-544 T-Mobile
773-545 AT&T (Illinois Bell)
773-546 AT&T (Illinois Bell)
773-547 AT&T Mobility
773-548 AT&T (Illinois Bell)
773-549 AT&T (Illinois Bell)
773-550 Verizon Wireless
773-551 AT&T Mobility
773-552 T-Mobile
773-553 AT&T (Illinois Bell)
773-554 T-Mobile
773-556 T-Mobile
773-557 Paetec Itel
773-558 Verizon Wireless
773-559 T-Mobile
773-560 AT&T (Teleport)
773-561 AT&T (Illinois Bell)
773-562 T-Mobile
773-563 T-Mobile
773-564 AT&T (Teleport)
773-565 First Communications
773-566 Spok
773-567 Metropcs
773-568 AT&T (Illinois Bell)
773-569 AT&T (Illinois Bell)
773-570 Lumen (Level 3)
773-571 Verizon Wireless
773-572 Lumen (Level 3)
773-573 Verizon Wireless
773-574 T-Mobile
773-575 AT&T Mobility
773-576 AT&T Mobility
773-577 Paetec Itel
773-578 AT&T Mobility
773-579 AT&T (Illinois Bell)
773-580 AT&T Mobility
773-581 AT&T (Illinois Bell)
773-582 AT&T (Illinois Bell)
773-583 AT&T (Illinois Bell)
773-584 Verizon Business (MCImetro)
773-585 AT&T (Illinois Bell)
773-586 AT&T (Illinois Bell)
773-587 T-Mobile
773-588 AT&T (Illinois Bell)
773-589 AT&T (Illinois Bell)
773-590 Verizon Wireless
773-591 AT&T (Illinois Bell)
773-592 T-Mobile
773-593 T-Mobile
773-594 AT&T (Illinois Bell)
773-595 T-Mobile
773-596 Paetec Itel
773-597 First Communications
773-598 Verizon Business (MCImetro)
773-599 Onvoy (Sinch)
773-600 T-Mobile
773-601 AT&T (Illinois Bell)
773-602 AT&T (Illinois Bell)
773-603 T-Mobile
773-604 AT&T (Illinois Bell)
773-605 First Communications
773-606 T-Mobile
773-607 AT&T Mobility
773-608 AT&T Mobility
773-609 Onvoy (Sinch)
773-610 AT&T Mobility
773-612 AT&T Mobility
773-613 AT&T Mobility
773-614 T-Mobile
773-615 T-Mobile
773-616 T-Mobile
773-617 T-Mobile
773-618 AT&T Mobility
773-619 T-Mobile
773-620 AT&T Mobility
773-621 T-Mobile
773-622 AT&T (Illinois Bell)
773-623 AT&T Mobility
773-624 AT&T (Illinois Bell)
773-625 AT&T (Illinois Bell)
773-626 AT&T (Illinois Bell)
773-627 Paetec Itel
773-628 AT&T (Teleport)
773-629 T-Mobile
773-630 AT&T Mobility
773-631 AT&T (Illinois Bell)
773-632 Verizon Business (MCImetro)
773-633 Verizon Wireless
773-634 Verizon Business (MCImetro)
773-635 Lumen (Level 3)
773-636 Verizon Wireless
773-637 AT&T (Illinois Bell)
773-638 AT&T (Illinois Bell)
773-639 T-Mobile
773-640 Paetec Itel
773-641 T-Mobile
773-642 T-Mobile
773-643 AT&T (Illinois Bell)
773-644 AT&T (Teleport)
773-645 AT&T (Illinois Bell)
773-646 AT&T (Illinois Bell)
773-647 T-Mobile
773-648 Paetec Itel
773-649 Paetec Itel
773-650 AT&T (Illinois Bell)
773-651 AT&T (Illinois Bell)
773-652 Spok
773-653 Paetec Itel
773-654 Paetec Itel
773-655 T-Mobile
773-656 T-Mobile
773-657 T-Mobile
773-658 AT&T Mobility
773-659 AT&T Mobility
773-660 AT&T (Illinois Bell)
773-661 Paetec Itel
773-662 Verizon Wireless
773-663 T-Mobile
773-664 Paetec Itel
773-665 AT&T (Illinois Bell)
773-666 Bandwidth
773-667 AT&T (Illinois Bell)
773-668 Lumen (Level 3)
773-669 Bandwidth
773-670 AT&T Mobility
773-671 T-Mobile
773-672 T-Mobile
773-673 Paetec Itel
773-674 AT&T (Illinois Bell)
773-675 Verizon Wireless
773-676 AT&T (Teleport)
773-677 AT&T Mobility
773-678 T-Mobile
773-679 T-Mobile
773-680 AT&T Mobility
773-681 Verizon Business (MCImetro)
773-682 Verizon Wireless
773-683 AT&T Mobility
773-684 AT&T (Illinois Bell)
773-685 AT&T (Illinois Bell)
773-686 AT&T (Illinois Bell)
773-687 AT&T (Teleport)
773-688 Rcn Telecom Services Of Illinios
773-689 Verizon Wireless
773-690 T-Mobile
773-691 T-Mobile
773-692 Onvoy (Sinch)
773-693 AT&T (Illinois Bell)
773-694 AT&T (Illinois Bell)
773-695 AT&T (Illinois Bell)
773-696 Paetec Itel
773-697 Paetec Itel
773-698 T-Mobile
773-699 T-Mobile
773-701 T-Mobile
773-702 AT&T (Illinois Bell)
773-703 AT&T Mobility
773-704 T-Mobile
773-705 Verizon Wireless
773-706 Verizon Wireless
773-707 AT&T Mobility
773-708 AT&T Mobility
773-709 AT&T Mobility
773-710 AT&T Mobility
773-712 AT&T Mobility
773-713 American Messaging Services
773-714 AT&T (Illinois Bell)
773-715 T-Mobile
773-716 T-Mobile
773-717 Verizon Wireless
773-718 Verizon Wireless
773-719 T-Mobile
773-720 Verizon Wireless
773-721 AT&T (Illinois Bell)
773-722 AT&T (Illinois Bell)
773-723 AT&T (Illinois Bell)
773-724 Verizon Wireless
773-725 AT&T (Illinois Bell)
773-726 Paetec Itel
773-727 T-Mobile
773-728 AT&T (Illinois Bell)
773-729 Paetec Itel
773-730 AT&T (Illinois Bell)
773-731 AT&T (Illinois Bell)
773-732 T-Mobile
773-733 Paetec Itel
773-734 AT&T (Illinois Bell)
773-735 AT&T (Illinois Bell)
773-736 AT&T (Illinois Bell)
773-737 AT&T (Illinois Bell)
773-738 T-Mobile
773-739 T-Mobile
773-740 Onvoy (Sinch)
773-741 AT&T (Illinois Bell)
773-742 T-Mobile
773-743 AT&T (Illinois Bell)
773-744 T-Mobile
773-745 AT&T (Illinois Bell)
773-746 T-Mobile
773-747 T-Mobile
773-748 Indiana Paging Network
773-749 T-Mobile
773-750 AT&T Mobility
773-751 Verizon Business (MCImetro)
773-752 AT&T (Illinois Bell)
773-753 AT&T (Illinois Bell)
773-754 Comcast (Xfinity)
773-755 AT&T (Illinois Bell)
773-756 Verizon Business (MCImetro)
773-757 AT&T (Teleport)
773-758 Verizon Wireless
773-759 T-Mobile
773-760 Verizon Wireless
773-761 AT&T (Illinois Bell)
773-762 AT&T (Illinois Bell)
773-763 AT&T (Illinois Bell)
773-764 AT&T (Illinois Bell)
773-765 AT&T (Teleport)
773-766 Verizon Wireless
773-767 AT&T (Illinois Bell)
773-768 AT&T (Illinois Bell)
773-769 AT&T (Illinois Bell)
773-770 Paetec Itel
773-771 Verizon Wireless
773-772 AT&T (Illinois Bell)
773-773 Onvoy (Sinch)
773-774 AT&T (Illinois Bell)
773-775 AT&T (Illinois Bell)
773-776 AT&T (Illinois Bell)
773-777 AT&T (Illinois Bell)
773-778 AT&T (Illinois Bell)
773-779 AT&T (Illinois Bell)
773-780 T-Mobile
773-781 American Messaging Services
773-782 AT&T (Illinois Bell)
773-783 AT&T (Illinois Bell)
773-784 AT&T (Illinois Bell)
773-785 AT&T (Illinois Bell)
773-786 Paetec Itel
773-787 Verizon Business (MCImetro)
773-788 AT&T (Illinois Bell)
773-789 Rcn Telecom Services Of Illinios
773-790 Lumen (Level 3)
773-791 AT&T Mobility
773-792 AT&T (Illinois Bell)
773-793 T-Mobile
773-794 AT&T (Illinois Bell)
773-795 AT&T (Illinois Bell)
773-796 Lumen (Level 3)
773-797 Lumen (Level 3)
773-798 Verizon Wireless
773-799 Verizon Business (MCImetro)
773-800 Lumen (Level 3)
773-801 AT&T (Illinois Bell)
773-802 Verizon Wireless
773-803 T-Mobile
773-804 AT&T (Illinois Bell)
773-805 Verizon Wireless
773-806 AT&T Mobility
773-807 T-Mobile
773-808 T-Mobile
773-809 T-Mobile
773-810 AT&T Mobility
773-812 AT&T Mobility
773-813 AT&T Mobility
773-814 T-Mobile
773-815 AT&T Mobility
773-816 T-Mobile
773-817 T-Mobile
773-818 T-Mobile
773-819 Onvoy (Sinch)
773-820 AT&T Mobility
773-821 AT&T (Illinois Bell)
773-822 T-Mobile
773-823 AT&T (Teleport)
773-824 AT&T (Teleport)
773-825 AT&T (Illinois Bell)
773-826 AT&T (Illinois Bell)
773-827 T-Mobile
773-828 Lumen (Level 3)
773-829 Lumen (Level 3)
773-830 Verizon Business (MCImetro)
773-831 Lumen (Level 3)
773-832 AT&T (Illinois Bell)
773-833 Verizon Wireless
773-834 AT&T (Illinois Bell)
773-835 Verizon Wireless
773-836 AT&T (Illinois Bell)
773-837 T-Mobile
773-838 AT&T (Illinois Bell)
773-839 Onvoy (Sinch)
773-840 Paetec Itel
773-841 AT&T Mobility
773-842 T-Mobile
773-843 AT&T (Illinois Bell)
773-844 AT&T Mobility
773-845 American Messaging Services
773-846 AT&T (Illinois Bell)
773-847 AT&T (Illinois Bell)
773-848 Verizon Wireless
773-849 Verizon Wireless
773-850 Verizon Wireless
773-851 T-Mobile
773-852 AT&T Mobility
773-853 T-Mobile
773-854 AT&T (Illinois Bell)
773-855 Rcn Telecom Services Of Illinios
773-856 Rcn Telecom Services Of Illinios
773-857 Rcn Telecom Services Of Illinios
773-858 T-Mobile
773-859 Verizon Wireless
773-860 AT&T Mobility
773-861 AT&T Mobility
773-862 AT&T (Illinois Bell)
773-863 AT&T (Illinois Bell)
773-864 AT&T (Illinois Bell)
773-865 T-Mobile
773-866 AT&T (Illinois Bell)
773-867 AT&T (Illinois Bell)
773-868 AT&T (Illinois Bell)
773-869 AT&T (Illinois Bell)
773-870 AT&T Mobility
773-871 AT&T (Illinois Bell)
773-872 Onvoy (Sinch)
773-873 AT&T (Illinois Bell)
773-874 AT&T (Illinois Bell)
773-875 T-Mobile
773-876 Metropcs
773-877 T-Mobile
773-878 AT&T (Illinois Bell)
773-879 T-Mobile
773-880 AT&T (Illinois Bell)
773-881 AT&T (Illinois Bell)
773-882 Verizon Wireless
773-883 AT&T (Illinois Bell)
773-884 AT&T (Illinois Bell)
773-885 T-Mobile
773-886 T-Mobile
773-887 Verizon Business (MCImetro)
773-888 Bandwidth
773-889 AT&T (Illinois Bell)
773-890 AT&T (Illinois Bell)
773-891 Comcast (Xfinity)
773-892 AT&T (Illinois Bell)
773-893 Verizon Business (MCImetro)
773-894 AT&T (Illinois Bell)
773-895 T-Mobile
773-896 Verizon Business (MCImetro)
773-897 Peerless Network
773-898 Verizon Wireless
773-899 Verizon Wireless
773-900 Fractel
773-901 AT&T Mobility
773-902 Lumen (Level 3)
773-903 Onvoy (Sinch)
773-904 Lumen (Level 3)
773-905 Lumen (Level 3)
773-906 Lumen (Level 3)
773-907 AT&T (Illinois Bell)
773-908 T-Mobile
773-909 Verizon Wireless
773-910 AT&T Mobility
773-912 Lumen (Level 3)
773-913 Lumen (Level 3)
773-914 Verizon Wireless
773-915 Lumen (Level 3)
773-916 T-Mobile
773-917 Verizon Business (MCImetro)
773-918 AT&T (Illinois Bell)
773-919 Verizon Wireless
773-920 Lumen (Level 3)
773-921 AT&T (Illinois Bell)
773-922 Lumen (Level 3)
773-923 AT&T Mobility
773-924 AT&T (Illinois Bell)
773-925 AT&T (Illinois Bell)
773-926 AT&T (Illinois Bell)
773-927 AT&T (Illinois Bell)
773-928 AT&T (Illinois Bell)
773-929 AT&T (Illinois Bell)
773-930 T-Mobile
773-931 T-Mobile
773-932 Lumen (Level 3)
773-933 AT&T (Illinois Bell)
773-934 T-Mobile
773-935 AT&T (Illinois Bell)
773-936 T-Mobile
773-937 Rcn Telecom Services Of Illinios
773-938 Lumen (Level 3)
773-939 T-Mobile
773-940 Comcast (Xfinity)
773-941 T-Mobile
773-942 Lumen (Level 3)
773-943 T-Mobile
773-944 Rcn Telecom Services Of Illinios
773-945 Peerless Network
773-946 Lumen (Level 3)
773-947 AT&T (Illinois Bell)
773-948 Verizon Business (MCImetro)
773-949 T-Mobile
773-951 Verizon Wireless
773-952 T-Mobile
773-953 T-Mobile
773-954 T-Mobile
773-955 AT&T (Illinois Bell)
773-956 T-Mobile
773-957 Paetec Itel
773-960 T-Mobile
773-961 AT&T (Illinois Bell)
773-962 AT&T (Illinois Bell)
773-963 T-Mobile
773-964 T-Mobile
773-965 Verizon Wireless
773-966 Lumen (Level 3)
773-967 Verizon Business (MCImetro)
773-968 T-Mobile
773-969 T-Mobile
773-970 AT&T Mobility
773-971 T-Mobile
773-972 AT&T Mobility
773-973 AT&T (Illinois Bell)
773-974 Paetec Itel
773-975 AT&T (Illinois Bell)
773-977 Paetec Itel
773-978 AT&T (Illinois Bell)
773-979 T-Mobile
773-980 AT&T (Illinois Bell)
773-981 Verizon Business (MCImetro)
773-982 T-Mobile
773-983 T-Mobile
773-984 T-Mobile
773-985 Verizon Business (MCImetro)
773-986 T-Mobile
773-987 First Communications
773-988 T-Mobile
773-989 AT&T (Illinois Bell)
773-990 AT&T (Illinois Bell)
773-991 T-Mobile
773-992 AT&T (Illinois Bell)
773-993 T-Mobile
773-994 AT&T (Illinois Bell)
773-995 AT&T (Illinois Bell)
773-996 T-Mobile
773-997 T-Mobile
773-998 AT&T Mobility
773-999 AT&T Mobility
312-200 Metropcs
312-201 AT&T (Illinois Bell)
312-202 AT&T (Illinois Bell)
312-203 AT&T Mobility
312-204 AT&T (Illinois Bell)
312-205 Verizon Business (MCImetro)
312-206 AT&T Mobility
312-207 AT&T (Illinois Bell)
312-208 AT&T Mobility
312-210 Peerless Network
312-212 AT&T (Illinois Bell)
312-213 AT&T Mobility
312-214 AT&T (Illinois Bell)
312-216 First Communications
312-217 T-Mobile
312-218 AT&T Mobility
312-219 Bandwidth
312-220 AT&T (Illinois Bell)
312-221 T-Mobile
312-222 AT&T (Illinois Bell)
312-223 AT&T (Illinois Bell)
312-224 Lumen (Level 3)
312-225 AT&T (Illinois Bell)
312-226 AT&T (Illinois Bell)
312-227 AT&T (Illinois Bell)
312-228 AT&T (Illinois Bell)
312-229 AT&T (Illinois Bell)
312-230 AT&T (Illinois Bell)
312-232 American Messaging Services
312-233 AT&T (Illinois Bell)
312-234 AT&T (Illinois Bell)
312-235 AT&T (Illinois Bell)
312-236 AT&T (Illinois Bell)
312-237 Verizon Wireless
312-238 Lumen (Level 3)
312-239 At&T - Local
312-240 AT&T (Illinois Bell)
312-241 AT&T Mobility
312-242 AT&T (Teleport)
312-243 AT&T (Illinois Bell)
312-244 AT&T (Illinois Bell)
312-245 AT&T (Illinois Bell)
312-247 First Communications
312-248 Metropcs
312-249 Spok
312-250 Spok
312-251 AT&T (Illinois Bell)
312-252 Verizon Business (MCImetro)
312-253 Verizon Business (MCImetro)
312-254 Verizon Business (MCImetro)
312-255 AT&T (Illinois Bell)
312-256 Verizon Business (MCImetro)
312-257 Verizon Wireless
312-258 AT&T (Illinois Bell)
312-259 AT&T Mobility
312-260 Verizon Business (MCImetro)
312-261 Lumen (Level 3)
312-262 Verizon Business (MCImetro)
312-263 AT&T (Illinois Bell)
312-264 Lumen (Level 3)
312-265 Access One
312-266 AT&T (Illinois Bell)
312-267 AT&T (Illinois Bell)
312-268 Lumen (Level 3)
312-269 AT&T (Illinois Bell)
312-270 Metropcs
312-271 Spok
312-272 Spok
312-273 Verizon Wireless
312-274 AT&T (Illinois Bell)
312-275 Verizon Business (MCImetro)
312-276 Verizon Business (MCImetro)
312-277 Verizon Business (MCImetro)
312-278 Lumen (Level 3)
312-279 Verizon Business (MCImetro)
312-280 AT&T (Illinois Bell)
312-281 Lumen (Level 3)
312-282 AT&T Mobility
312-283 Lumen (Level 3)
312-284 Xo Illinois
312-285 T-Mobile
312-286 AT&T Mobility
312-287 T-Mobile
312-288 Verizon Business (MCImetro)
312-289 Spok
312-290 Spok
312-291 AT&T (Illinois Bell)
312-292 Bandwidth
312-293 AT&T (Illinois Bell)
312-294 AT&T (Illinois Bell)
312-296 T-Mobile
312-297 AT&T (Illinois Bell)
312-298 Rcn Telecom Services Of Illinios
312-299 Spok
312-300 Lumen (Level 3)
312-302 AT&T (Illinois Bell)
312-306 AT&T (Illinois Bell)
312-307 AT&T Mobility
312-308 AT&T (Illinois Bell)
312-309 AT&T (Illinois Bell)
312-312 Onvoy (Sinch)
312-313 Onvoy (Sinch)
312-315 AT&T Mobility
312-316 AT&T Mobility
312-319 Verizon Business (MCImetro)
312-320 AT&T Mobility
312-321 AT&T (Illinois Bell)
312-322 AT&T (Illinois Bell)
312-323 American Messaging Services
312-324 Lumen (Level 3)
312-325 AT&T (Illinois Bell)
312-326 AT&T (Illinois Bell)
312-327 Verizon Business (MCImetro)
312-328 AT&T (Illinois Bell)
312-329 AT&T (Illinois Bell)
312-330 AT&T Mobility
312-332 AT&T (Illinois Bell)
312-333 American Messaging Services
312-334 First Communications
312-335 AT&T (Illinois Bell)
312-336 AT&T (Illinois Bell)
312-337 AT&T (Illinois Bell)
312-338 AT&T (Illinois Bell)
312-339 Verizon Wireless
312-340 T-Mobile
312-341 AT&T (Illinois Bell)
312-342 AT&T Mobility
312-343 Verizon Wireless
312-344 AT&T (Illinois Bell)
312-345 AT&T (Illinois Bell)
312-346 AT&T (Illinois Bell)
312-347 AT&T (Illinois Bell)
312-348 Onvoy (Sinch)
312-349 Spok
312-350 Verizon Wireless
312-351 AT&T Mobility
312-353 AT&T (Illinois Bell)
312-355 AT&T (Illinois Bell)
312-356 AT&T (Illinois Bell)
312-357 AT&T (Illinois Bell)
312-358 T-Mobile
312-359 Spok
312-360 AT&T (Illinois Bell)
312-361 AT&T (Illinois Bell)
312-362 AT&T (Illinois Bell)
312-363 Rcn Telecom Services Of Illinios
312-364 AT&T (Illinois Bell)
312-365 Spok
312-366 AT&T Mobility
312-368 AT&T (Illinois Bell)
312-369 AT&T Mobility
312-370 Spok
312-371 T-Mobile
312-372 AT&T (Illinois Bell)
312-373 Lumen (Level 3)
312-374 AT&T (Illinois Bell)
312-375 T-Mobile
312-376 Onvoy (Sinch)
312-377 Verizon Business (MCImetro)
312-378 Spok
312-379 Paetec Itel
312-380 AT&T (Illinois Bell)
312-381 AT&T (Illinois Bell)
312-382 AT&T (Illinois Bell)
312-383 AT&T (Teleport)
312-384 AT&T (Illinois Bell)
312-385 AT&T (Illinois Bell)
312-386 AT&T (Illinois Bell)
312-387 Spok
312-388 T-Mobile
312-389 Spok
312-390 American Messaging Services
312-391 AT&T Mobility
312-392 Onvoy (Sinch)
312-393 American Messaging Services
312-394 AT&T (Illinois Bell)
312-395 AT&T (Teleport)
312-396 AT&T (Illinois Bell)
312-397 AT&T (Illinois Bell)
312-398 Spok
312-399 T-Mobile
312-400 American Messaging Services
312-401 AT&T Mobility
312-402 AT&T Mobility
312-404 T-Mobile
312-405 Verizon Wireless
312-407 AT&T (Illinois Bell)
312-408 AT&T (Illinois Bell)
312-409 AT&T (Illinois Bell)
312-410 AT&T (Illinois Bell)
312-413 AT&T (Illinois Bell)
312-414 Vonage
312-415 Verizon Wireless
312-416 Verizon Business (MCImetro)
312-417 AT&T (Illinois Bell)
312-418 Spok
312-419 AT&T (Illinois Bell)
312-420 AT&T Mobility
312-421 AT&T (Illinois Bell)
312-422 AT&T (Illinois Bell)
312-423 Lumen (Level 3)
312-424 AT&T (Illinois Bell)
312-425 AT&T (Illinois Bell)
312-426 Onvoy (Sinch)
312-427 AT&T (Illinois Bell)
312-428 Lumen (Level 3)
312-429 Lumen (Level 3)
312-430 AT&T (Illinois Bell)
312-431 AT&T (Illinois Bell)
312-432 AT&T (Illinois Bell)
312-433 AT&T (Illinois Bell)
312-434 T-Mobile
312-435 AT&T (Illinois Bell)
312-436 AT&T (Illinois Bell)
312-437 T-Mobile
312-438 Verizon Wireless
312-439 AT&T Mobility
312-440 AT&T (Illinois Bell)
312-441 AT&T (Illinois Bell)
312-442 AT&T (Illinois Bell)
312-443 AT&T (Illinois Bell)
312-444 AT&T (Illinois Bell)
312-445 AT&T (Illinois Bell)
312-446 T-Mobile
312-447 AT&T (Illinois Bell)
312-448 Verizon Wireless
312-449 Wavenation
312-450 AT&T Mobility
312-451 T-Mobile
312-452 Onvoy (Sinch)
312-453 Verizon Business (MCImetro)
312-454 AT&T (Illinois Bell)
312-455 AT&T (Illinois Bell)
312-456 AT&T (Illinois Bell)
312-457 American Messaging Services
312-458 AT&T (Illinois Bell)
312-459 T-Mobile
312-460 AT&T (Illinois Bell)
312-461 AT&T (Illinois Bell)
312-462 AT&T (Illinois Bell)
312-463 AT&T (Illinois Bell)
312-464 AT&T (Illinois Bell)
312-465 Paetec Itel
312-466 AT&T (Illinois Bell)
312-467 AT&T (Illinois Bell)
312-468 T-Mobile
312-469 AT&T (Illinois Bell)
312-470 Verizon Business (MCImetro)
312-471 Verizon Business (MCImetro)
312-472 AT&T (Illinois Bell)
312-473 Onvoy (Sinch)
312-474 AT&T (Illinois Bell)
312-475 AT&T (Illinois Bell)
312-476 T-Mobile
312-477 Lumen (Level 3)
312-478 T-Mobile
312-479 AT&T (Teleport)
312-480 AT&T Mobility
312-481 Metropcs
312-482 AT&T (Illinois Bell)
312-483 T-Mobile
312-484 Spok
312-485 Verizon Wireless
312-486 Verizon Business (MCImetro)
312-487 Metropcs
312-488 Lumen (Level 3)
312-489 Verizon Wireless
312-490 Spok
312-491 AT&T (Illinois Bell)
312-492 AT&T (Illinois Bell)
312-493 T-Mobile
312-494 AT&T (Illinois Bell)
312-495 Spok
312-496 AT&T (Illinois Bell)
312-497 Verizon Wireless
312-498 T-Mobile
312-499 AT&T (Illinois Bell)
312-500 Onvoy (Sinch)
312-502 Verizon Wireless
312-503 AT&T (Teleport)
312-504 AT&T Mobility
312-505 Verizon Wireless
312-506 First Communications
312-507 AT&T (Illinois Bell)
312-508 Peerless Network
312-509 Peerless Network
312-512 Spok
312-513 AT&T Mobility
312-514 American Messaging Services
312-515 Verizon Wireless
312-516 AT&T (Illinois Bell)
312-517 Verizon Business (MCImetro)
312-519 Verizon Wireless
312-520 Verizon Wireless
312-521 AT&T (Teleport)
312-522 T-Mobile
312-523 T-Mobile
312-525 Verizon Business (MCImetro)
312-526 AT&T (Illinois Bell)
312-527 AT&T (Illinois Bell)
312-528 AT&T (Illinois Bell)
312-529 At&T - Local
312-530 Stratus Networks
312-532 T-Mobile
312-533 Verizon Wireless
312-534 AT&T (Illinois Bell)
312-535 Bandwidth
312-536 T-Mobile
312-537 AT&T (Illinois Bell)
312-538 Metropcs
312-539 T-Mobile
312-540 AT&T (Illinois Bell)
312-541 AT&T (Illinois Bell)
312-542 AT&T (Illinois Bell)
312-543 AT&T Mobility
312-544 AT&T (Illinois Bell)
312-545 T-Mobile
312-546 Lumen (Level 3)
312-547 AT&T Mobility
312-548 Lumen (Level 3)
312-549 AT&T (Teleport)
312-550 Verizon Wireless
312-551 AT&T (Illinois Bell)
312-552 AT&T (Illinois Bell)
312-553 AT&T (Illinois Bell)
312-554 AT&T (Illinois Bell)
312-556 AT&T (Illinois Bell)
312-557 AT&T (Illinois Bell)
312-558 AT&T (Illinois Bell)
312-559 AT&T (Illinois Bell)
312-560 AT&T Mobility
312-561 Verizon Wireless
312-562 Spok
312-563 AT&T (Illinois Bell)
312-564 First Communications
312-565 AT&T (Illinois Bell)
312-566 AT&T (Illinois Bell)
312-567 AT&T (Illinois Bell)
312-568 AT&T (Illinois Bell)
312-569 AT&T (Illinois Bell)
312-570 AT&T (Illinois Bell)
312-571 Spok
312-572 AT&T (Illinois Bell)
312-573 AT&T (Illinois Bell)
312-574 AT&T (Illinois Bell)
312-575 AT&T (Illinois Bell)
312-576 AT&T Mobility
312-577 Verizon Business (MCImetro)
312-578 AT&T (Illinois Bell)
312-579 Verizon Wireless
312-580 AT&T (Illinois Bell)
312-581 AT&T Mobility
312-582 AT&T (Illinois Bell)
312-583 AT&T (Illinois Bell)
312-584 Voip Innovations
312-585 Verizon Business (MCImetro)
312-586 Onvoy (Sinch)
312-587 AT&T (Illinois Bell)
312-588 AT&T (Illinois Bell)
312-589 AT&T (Illinois Bell)
312-590 Verizon Wireless
312-591 AT&T (Illinois Bell)
312-592 AT&T (Illinois Bell)
312-593 T-Mobile
312-594 Verizon Business (MCImetro)
312-595 AT&T (Illinois Bell)
312-596 AT&T (Teleport)
312-597 Verizon Wireless
312-598 Onvoy (Sinch)
312-599 Verizon Wireless
312-600 Onvoy (Sinch)
312-601 Verizon Business (MCImetro)
312-602 Lumen (Level 3)
312-603 AT&T (Illinois Bell)
312-604 Verizon Business (MCImetro)
312-605 Paetec Itel
312-606 AT&T (Illinois Bell)
312-607 AT&T Mobility
312-608 AT&T Mobility
312-609 AT&T (Illinois Bell)
312-610 Verizon Wireless
312-612 AT&T (Illinois Bell)
312-613 AT&T Mobility
312-614 AT&T (Illinois Bell)
312-616 AT&T (Illinois Bell)
312-617 T-Mobile
312-618 AT&T Mobility
312-619 T-Mobile
312-620 Bandwidth
312-621 AT&T (Illinois Bell)
312-622 AT&T Mobility
312-623 AT&T Mobility
312-624 Rcn Telecom Services Of Illinios
312-625 Lumen (Level 3)
312-626 Onvoy (Sinch)
312-627 AT&T (Illinois Bell)
312-628 Verizon Business (MCImetro)
312-629 AT&T (Illinois Bell)
312-630 AT&T (Illinois Bell)
312-631 Lumen (CenturyLink)
312-632 AT&T (Illinois Bell)
312-633 AT&T (Illinois Bell)
312-634 AT&T (Illinois Bell)
312-635 Lumen (Level 3)
312-636 Verizon Wireless
312-637 Lumen (Level 3)
312-638 Lumen (Level 3)
312-639 Verizon Wireless
312-640 AT&T (Illinois Bell)
312-641 AT&T (Illinois Bell)
312-642 AT&T (Illinois Bell)
312-643 Rcn Telecom Services Of Illinios
312-644 AT&T (Illinois Bell)
312-645 AT&T (Illinois Bell)
312-646 Lumen (Level 3)
312-647 T-Mobile
312-648 AT&T (Illinois Bell)
312-649 AT&T (Illinois Bell)
312-650 Rcn Telecom Services Of Illinios
312-651 AT&T (Illinois Bell)
312-652 AT&T (Illinois Bell)
312-653 AT&T (Illinois Bell)
312-654 AT&T (Illinois Bell)
312-655 AT&T (Illinois Bell)
312-656 T-Mobile
312-657 Spok
312-658 AT&T (Illinois Bell)
312-659 AT&T Mobility
312-660 AT&T (Teleport)
312-661 AT&T (Illinois Bell)
312-662 AT&T (Illinois Bell)
312-663 AT&T (Illinois Bell)
312-664 AT&T (Illinois Bell)
312-665 AT&T (Teleport)
312-666 AT&T (Illinois Bell)
312-667 Peerless Network
312-668 Csc Wireless
312-669 AT&T (Illinois Bell)
312-670 AT&T (Illinois Bell)
312-671 T-Mobile
312-672 AT&T (Illinois Bell)
312-673 First Communications
312-674 AT&T (Illinois Bell)
312-675 AT&T (Illinois Bell)
312-676 First Communications
312-677 Spok
312-678 T-Mobile
312-679 Tpx Communications
312-680 Onvoy (Sinch)
312-681 AT&T (Illinois Bell)
312-682 Nuso
312-683 AT&T (Illinois Bell)
312-684 T-Mobile
312-685 T-Mobile
312-686 Peerless Network
312-687 T-Mobile
312-688 Spok
312-689 American Messaging Services
312-690 Lumen (Level 3)
312-691 Indiana Paging Network
312-692 AT&T (Illinois Bell)
312-693 AT&T (Illinois Bell)
312-694 AT&T (Illinois Bell)
312-695 AT&T (Illinois Bell)
312-696 AT&T (Illinois Bell)
312-697 AT&T (Illinois Bell)
312-698 Lumen (Level 3)
312-701 AT&T (Illinois Bell)
312-702 Verizon Business (MCImetro)
312-703 AT&T (Illinois Bell)
312-704 AT&T (Illinois Bell)
312-705 AT&T (Teleport)
312-706 AT&T (Teleport)
312-707 AT&T (Illinois Bell)
312-708 Onvoy (Sinch)
312-709 T-Mobile
312-710 AT&T (Illinois Bell)
312-712 AT&T (Illinois Bell)
312-713 American Messaging Services
312-714 AT&T (Illinois Bell)
312-715 AT&T (Illinois Bell)
312-716 AT&T (Illinois Bell)
312-718 Verizon Wireless
312-719 T-Mobile
312-720 Verizon Wireless
312-721 T-Mobile
312-722 Paetec Itel
312-723 AT&T Mobility
312-724 Bandwidth
312-725 Bandwidth
312-726 AT&T (Illinois Bell)
312-727 AT&T (Illinois Bell)
312-728 Verizon Wireless
312-729 AT&T (Illinois Bell)
312-730 At&T - Local
312-731 T-Mobile
312-732 AT&T (Illinois Bell)
312-733 AT&T (Illinois Bell)
312-734 AT&T (Teleport)
312-735 T-Mobile
312-736 AT&T (Teleport)
312-737 AT&T (Illinois Bell)
312-738 AT&T (Illinois Bell)
312-739 AT&T (Illinois Bell)
312-740 American Messaging Services
312-741 Paetec Itel
312-742 AT&T (Illinois Bell)
312-743 AT&T (Illinois Bell)
312-744 AT&T (Illinois Bell)
312-745 AT&T (Illinois Bell)
312-746 AT&T (Illinois Bell)
312-747 AT&T (Illinois Bell)
312-748 Onvoy (Sinch)
312-750 AT&T (Illinois Bell)
312-751 AT&T (Illinois Bell)
312-752 Lumen (Level 3)
312-753 Rcn Telecom Services Of Illinios
312-754 Lumen (Level 3)
312-755 AT&T (Illinois Bell)
312-756 AT&T (Illinois Bell)
312-757 Bandwidth
312-758 Verizon Wireless
312-759 AT&T (Illinois Bell)
312-760 American Messaging Services
312-761 Telengy
312-762 AT&T (Illinois Bell)
312-763 Comcast (Xfinity)
312-764 AT&T (Teleport)
312-765 AT&T (Illinois Bell)
312-766 Peerless Network
312-767 Bandwidth
312-768 AT&T (Teleport)
312-769 Indiana Paging Network
312-770 AT&T (Illinois Bell)
312-771 Verizon Wireless
312-772 AT&T Mobility
312-773 Onvoy (Sinch)
312-774 T-Mobile
312-775 AT&T (Illinois Bell)
312-776 T-Mobile
312-777 AT&T (Teleport)
312-778 Onvoy (Sinch)
312-779 Onvoy (Sinch)
312-780 Verizon Business (MCImetro)
312-781 AT&T (Illinois Bell)
312-782 AT&T (Illinois Bell)
312-783 AT&T Mobility
312-784 First Communications
312-785 AT&T Mobility
312-786 AT&T (Illinois Bell)
312-787 AT&T (Illinois Bell)
312-788 AT&T (Illinois Bell)
312-789 AT&T (Illinois Bell)
312-790 AT&T (Illinois Bell)
312-791 AT&T (Illinois Bell)
312-792 Verizon Business (MCImetro)
312-793 AT&T (Illinois Bell)
312-794 Rcn Telecom Services Of Illinios
312-795 AT&T (Illinois Bell)
312-796 Peerless Network
312-797 AT&T (Illinois Bell)
312-798 AT&T (Illinois Bell)
312-799 AT&T (Illinois Bell)
312-800 Peerless Network
312-801 Nuso
312-802 Verizon Wireless
312-803 Verizon Business (MCImetro)
312-804 T-Mobile
312-805 Verizon Wireless
312-806 AT&T Mobility
312-807 AT&T (Illinois Bell)
312-808 AT&T (Illinois Bell)
312-809 Verizon Business (MCImetro)
312-810 AT&T Mobility
312-812 AT&T (Illinois Bell)
312-813 AT&T Mobility
312-814 AT&T (Illinois Bell)
312-815 Airespring
312-817 AT&T (Illinois Bell)
312-818 T-Mobile
312-819 AT&T (Illinois Bell)
312-820 Onvoy (Sinch)
312-821 Verizon Business (MCImetro)
312-822 AT&T (Illinois Bell)
312-823 AT&T (Illinois Bell)
312-824 Verizon Business (MCImetro)
312-825 T-Mobile
312-826 T-Mobile
312-827 AT&T (Illinois Bell)
312-828 AT&T (Illinois Bell)
312-829 AT&T (Illinois Bell)
312-831 AT&T (Illinois Bell)
312-832 AT&T (Illinois Bell)
312-833 Verizon Wireless
312-834 AT&T (Illinois Bell)
312-835 Verizon Wireless
312-836 AT&T (Illinois Bell)
312-837 Comcast (Xfinity)
312-838 T-Mobile
312-839 American Messaging Services
312-840 AT&T (Illinois Bell)
312-841 AT&T Mobility
312-842 AT&T (Illinois Bell)
312-843 AT&T (Teleport)
312-845 AT&T (Illinois Bell)
312-846 AT&T (Illinois Bell)
312-847 Onvoy (Sinch)
312-848 Verizon Wireless
312-849 AT&T (Illinois Bell)
312-850 AT&T (Illinois Bell)
312-851 Spok
312-852 AT&T Mobility
312-853 AT&T (Illinois Bell)
312-854 Rcn Telecom Services Of Illinios
312-855 AT&T (Illinois Bell)
312-856 AT&T (Illinois Bell)
312-857 AT&T (Illinois Bell)
312-858 Lumen (Level 3)
312-859 Verizon Wireless
312-860 AT&T Mobility
312-861 AT&T (Illinois Bell)
312-862 AT&T (Illinois Bell)
312-863 Paetec Itel
312-864 AT&T (Illinois Bell)
312-866 T-Mobile
312-867 AT&T (Illinois Bell)
312-868 Bandwidth
312-869 AT&T (Illinois Bell)
312-870 First Communications
312-871 T-Mobile
312-872 Lumen (Level 3)
312-873 Verizon Business (MCImetro)
312-874 T-Mobile
312-875 AT&T (Illinois Bell)
312-876 AT&T (Illinois Bell)
312-877 At&T Enterprises
312-878 Peerless Network
312-879 AT&T (Illinois Bell)
312-880 AT&T (Illinois Bell)
312-881 Paetec Itel
312-882 Verizon Wireless
312-883 Bandwidth
312-884 Paetec Itel
312-885 T-Mobile
312-886 AT&T (Illinois Bell)
312-887 AT&T (Illinois Bell)
312-888 AT&T Mobility
312-889 AT&T (Teleport)
312-890 T-Mobile
312-891 Spok
312-892 AT&T (Teleport)
312-893 Lumen (Level 3)
312-894 Verizon Business (MCImetro)
312-895 Lumen (Level 3)
312-896 Lumen (Level 3)
312-897 Verizon Business (MCImetro)
312-898 Verizon Wireless
312-899 AT&T (Illinois Bell)
312-900 Fractel
312-901 Spok
312-902 AT&T (Illinois Bell)
312-903 American Messaging Services
312-904 AT&T (Illinois Bell)
312-905 AT&T (Illinois Bell)
312-906 AT&T (Illinois Bell)
312-907 T-Mobile
312-908 AT&T (Illinois Bell)
312-909 Verizon Wireless
312-910 Onvoy (Sinch)
312-912 AT&T (Illinois Bell)
312-913 AT&T (Illinois Bell)
312-914 Verizon Wireless
312-915 AT&T (Illinois Bell)
312-917 AT&T (Illinois Bell)
312-918 T-Mobile
312-919 Verizon Wireless
312-920 AT&T (Illinois Bell)
312-921 AT&T (Illinois Bell)
312-922 AT&T (Illinois Bell)
312-923 AT&T (Illinois Bell)
312-924 Paetec Itel
312-925 AT&T Mobility
312-926 AT&T (Illinois Bell)
312-927 T-Mobile
312-928 AT&T (Illinois Bell)
312-929 T-Mobile
312-930 AT&T (Illinois Bell)
312-931 AT&T (Illinois Bell)
312-932 AT&T (Illinois Bell)
312-933 T-Mobile
312-934 T-Mobile
312-935 AT&T (Illinois Bell)
312-936 AT&T (Illinois Bell)
312-937 Verizon Wireless
312-938 AT&T (Illinois Bell)
312-939 AT&T (Illinois Bell)
312-940 Peerless Network
312-941 Spok
312-942 AT&T (Illinois Bell)
312-943 AT&T (Illinois Bell)
312-944 AT&T (Illinois Bell)
312-945 AT&T (Illinois Bell)
312-946 AT&T (Illinois Bell)
312-947 AT&T (Illinois Bell)
312-948 Paetec Itel
312-949 AT&T (Illinois Bell)
312-951 AT&T (Illinois Bell)
312-952 AT&T Mobility
312-953 AT&T Mobility
312-954 AT&T (Illinois Bell)
312-955 Rcn Telecom Services Of Illinios
312-956 AT&T Mobility
312-957 AT&T (Illinois Bell)
312-960 AT&T (Illinois Bell)
312-961 AT&T Mobility
312-962 Lumen (Level 3)
312-963 Spok
312-964 Onvoy (Sinch)
312-965 Verizon Wireless
312-966 Metropcs
312-967 Bandwidth
312-970 AT&T (Illinois Bell)
312-971 Bandwidth
312-972 AT&T Mobility
312-973 Verizon Business (MCImetro)
312-974 AT&T (Illinois Bell)
312-975 T-Mobile
312-977 AT&T (Illinois Bell)
312-978 T-Mobile
312-979 AT&T (Illinois Bell)
312-980 AT&T (Teleport)
312-981 Paetec Itel
312-982 Comcast (Xfinity)
312-983 AT&T (Illinois Bell)
312-984 AT&T (Illinois Bell)
312-985 Paetec Itel
312-986 AT&T (Illinois Bell)
312-987 AT&T (Illinois Bell)
312-988 AT&T (Illinois Bell)
312-989 AT&T Mobility
312-992 AT&T (Illinois Bell)
312-993 AT&T (Illinois Bell)
312-994 Paetec Itel
312-995 AT&T (Teleport)
312-996 AT&T (Illinois Bell)
312-997 AT&T (Illinois Bell)
312-998 Lumen (CenturyLink)
312-999 Verizon Business (MCImetro)
872-200 T-Mobile
872-201 Verizon Wireless
872-202 AT&T Mobility
872-203 Bandwidth
872-204 Onvoy (Sinch)
872-205 Bandwidth
872-206 Comcast (Xfinity)
872-207 Bandwidth
872-208 Lumen (CenturyLink)
872-209 T-Mobile
872-210 T-Mobile
872-212 T-Mobile
872-213 Onvoy (Sinch)
872-214 T-Mobile
872-215 Verizon Wireless
872-216 Bandwidth
872-217 Onvoy (Sinch)
872-218 T-Mobile
872-219 Onvoy (Sinch)
872-220 T-Mobile
872-221 Bandwidth
872-222 AT&T Mobility
872-223 T-Mobile
872-224 Onvoy (Sinch)
872-225 Onvoy (Sinch)
872-226 T-Mobile
872-227 T-Mobile
872-228 AT&T Mobility
872-229 T-Mobile
872-230 T-Mobile
872-231 Onvoy (Sinch)
872-232 T-Mobile
872-233 T-Mobile
872-234 T-Mobile
872-235 T-Mobile
872-236 T-Mobile
872-237 T-Mobile
872-238 T-Mobile
872-239 T-Mobile
872-240 Verizon Wireless
872-241 AT&T (Teleport)
872-242 Metropcs
872-243 T-Mobile
872-244 At&T Enterprises
872-245 Voip Innovations
872-246 AT&T (Teleport)
872-247 AT&T (Illinois Bell)
872-248 Bandwidth
872-249 Lumen (Level 3)
872-250 Onvoy (Sinch)
872-251 T-Mobile
872-252 T-Mobile
872-253 Onvoy (Sinch)
872-254 T-Mobile
872-255 Vonage
872-256 Bandwidth
872-257 AT&T Mobility
872-258 T-Mobile
872-259 Lumen (Level 3)
872-260 AT&T Mobility
872-261 AT&T Mobility
872-262 At&T - Local
872-263 Lumen (Level 3)
872-264 Bandwidth
872-265 AT&T Mobility
872-266 Onvoy (Sinch)
872-267 At&T Enterprises
872-268 Hd Carrier
872-269 Bandwidth
872-270 Onvoy (Sinch)
872-271 AT&T Mobility
872-272 Stratus Networks
872-273 Vonage
872-274 Ip Horizon
872-275 Commio
872-276 Verizon Wireless
872-277 Bandwidth
872-278 Onvoy (Sinch)
872-279 Ucomtel
872-280 Commio
872-281 At&T Enterprises
872-282 Onvoy (Sinch)
872-283 Onvoy (Sinch)
872-284 Hd Carrier
872-285 Onvoy (Sinch)
872-286 Bandwidth
872-287 T-Mobile
872-288 Skyetel
872-289 AT&T (Teleport)
872-290 Bandwidth
872-291 T-Mobile
872-292 T-Mobile
872-293 T-Mobile
872-294 T-Mobile
872-295 Bandwidth
872-296 Onvoy (Sinch)
872-297 T-Mobile
872-298 Telnyx
872-299 Paetec Itel
872-300 T-Mobile
872-301 T-Mobile
872-302 Onvoy (Sinch)
872-303 T-Mobile
872-304 Onvoy (Sinch)
872-305 T-Mobile
872-306 Onvoy (Sinch)
872-307 T-Mobile
872-308 T-Mobile
872-309 Onvoy (Sinch)
872-310 T-Mobile
872-312 Onvoy (Sinch)
872-313 Onvoy (Sinch)
872-314 Bandwidth
872-315 T-Mobile
872-316 Verizon Wireless
872-317 AT&T (Teleport)
872-318 AT&T (Teleport)
872-319 T-Mobile
872-320 AT&T Mobility
872-321 Onvoy (Sinch)
872-322 Onvoy (Sinch)
872-323 AT&T (Teleport)
872-324 Commio
872-325 T-Mobile
872-326 Onvoy (Sinch)
872-327 Onvoy (Sinch)
872-328 Verizon Wireless
872-329 At&T - Local
872-330 Leap Telecom
872-331 Callworks Corporation
872-332 Five9
872-333 T-Mobile
872-334 Ton80 Communications
872-335 AT&T Mobility
872-336 Fractel
872-337 Ton80 Communications
872-338 T-Mobile
872-339 AT&T Mobility
872-340 Wide Voice
872-341 AT&T Mobility
872-342 Fractel
872-343 Ton80 Communications
872-344 Onvoy (Sinch)
872-345 Fractel
872-346 Ton80 Communications
872-347 Shelcomm
872-348 Onvoy (Sinch)
872-349 Onvoy (Sinch)
872-350 T-Mobile
872-351 Commio
872-352 Onvoy (Sinch)
872-353 Commio
872-354 Commio
872-355 Ton80 Communications
872-356 Onvoy (Sinch)
872-357 AT&T Mobility
872-358 Onvoy (Sinch)
872-359 AT&T Mobility
872-360 T-Mobile
872-361 AT&T Mobility
872-362 Fractel
872-363 Onvoy (Sinch)
872-364 Boost Subscriberco L.L.C.
872-365 Commio
872-366 Onvoy (Sinch)
872-367 Fractel
872-368 AT&T Mobility
872-369 AT&T Mobility
872-370 Onvoy (Sinch)
872-371 T-Mobile
872-372 Onvoy (Sinch)
872-373 Onvoy (Sinch)
872-374 AT&T (Teleport)
872-375 Onvoy (Sinch)
872-376 Onvoy (Sinch)
872-377 T-Mobile
872-378 AT&T Mobility
872-379 AT&T Mobility
872-380 AT&T Mobility
872-381 AT&T Mobility
872-382 AT&T Mobility
872-383 Onvoy (Sinch)
872-384 T-Mobile
872-385 Onvoy (Sinch)
872-386 AT&T Mobility
872-387 Onvoy (Sinch)
872-388 Onvoy (Sinch)
872-389 Onvoy (Sinch)
872-390 Onvoy (Sinch)
872-391 Onvoy (Sinch)
872-392 Onvoy (Sinch)
872-393 Onvoy (Sinch)
872-394 Onvoy (Sinch)
872-395 AT&T Mobility
872-396 AT&T Mobility
872-397 AT&T Mobility
872-398 AT&T Mobility
872-400 AT&T Mobility
872-401 T-Mobile
872-444 At&T Enterprises
872-453 Ton80 Communications
872-463 Ton80 Communications
872-465 Onvoy (Sinch)
872-469 Onvoy (Sinch)
872-472 T-Mobile
872-484 T-Mobile
872-500 Ahoi
872-529 Peerless Network
872-568 Ton80 Communications
872-587 Ahoi
872-588 AT&T Mobility
872-600 T-Mobile
872-627 Ton80 Communications
872-639 Onvoy (Sinch)
872-664 Ton80 Communications
872-666 Peerless Network
872-674 Ton80 Communications
872-678 Ton80 Communications
872-701 T-Mobile
872-702 T-Mobile
872-703 T-Mobile
872-704 Bandwidth
872-706 T-Mobile
872-707 T-Mobile
872-710 Onvoy (Sinch)
872-713 Bandwidth
872-724 T-Mobile
872-731 T-Mobile
872-732 Fractel
872-757 T-Mobile
872-758 Fractel
872-760 Peerless Network
872-762 Peerless Network
872-763 Bandwidth
872-766 Fractel
872-769 Verizon Wireless
872-772 Verizon Wireless
872-777 Peerless Network
872-799 Hd Carrier
872-800 T-Mobile
872-801 T-Mobile
872-802 T-Mobile
872-803 T-Mobile
872-804 Peerless Network
872-806 T-Mobile
872-808 T-Mobile
872-810 Bandwidth
872-813 Bandwidth
872-814 AT&T Mobility
872-817 Verizon Wireless
872-818 At&T Enterprises
872-822 Metropcs
872-825 AT&T (Illinois Bell)
872-829 Onvoy (Sinch)
872-835 Ton80 Communications
872-838 Onvoy (Sinch)
872-842 Fractel
872-843 AT&T (Illinois Bell)
872-844 Metropcs
872-855 Metropcs
872-867 Commio
872-870 Onvoy (Sinch)
872-871 Metropcs
872-872 Onvoy (Sinch)
872-873 Onvoy (Sinch)
872-877 Onvoy (Sinch)
872-878 Boost Subscriberco L.L.C.
872-880 8X8
872-888 Verizon Business (MCImetro)
872-895 Twilio
872-899 Fractel
872-900 Onvoy (Sinch)
872-901 Metropcs
872-903 Lumen (Level 3)
872-904 T-Mobile
872-910 Onvoy (Sinch)
872-946 Fractel
872-985 Lumen (Level 3)
872-999 Onvoy (Sinch)

Questions

What is the area code for Chicago, IL?: Chicago uses 3 area codes: 773, 312 and 872. Different parts of the area are served by different codes.
What time zone is Chicago in?: Chicago is in the Central time zone.