773 Area Code: Location, Cities, Map And Time Zone

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Area code 773 is in Illinois, USA , serving the city of Chicago; it currently uses 786 prefixes , assigned from 773-200-XXXX through 773-999-XXXX.

In service since October 12, 1996, area code 773 is the parent Numbering Plan Area in overlay complex 773/872.

Chicago's business center, also known as the Loop, uses these overlaying area codes: 312/872, with the latter covering the entire city.

The current local time is .

773 area code location on a map
© OpenStreetMap contributorsFor exact NPA boundaries see official 773 area code map

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More Illinois area codes:

  • 217
  • 224
  • 309
  • 312
  • 331
  • 447
  • 464
  • 618
  • 630
  • 708
  • 730
  • 779
  • 815
  • 847
  • 861
  • 872

Locate any 773-NXX prefix:

773-200-XXXX --- 773-299-XXXX
NPANXX Carrier1 Area Served2 Date3
773-200 Five9 Chicago Zone 02 05/18/2023
773-201 USA Mobility Wireless Chicago Zone 01 N/A
773-202 Illinois Bell Tel Co Chicago Zone 03 N/A
773-203 New Cingular Wireless PCS Chicago Zone 01 N/A
773-204 Teleport Communications America Chicago Zone 01 N/A
773-205 Illinois Bell Tel Co Chicago Zone 03 N/A
773-206 New Cingular Wireless PCS Chicago Zone 01 N/A
773-207 Onvoy Chicago Zone 10 8/7/2019
773-208 New Cingular Wireless PCS Chicago Zone 01 N/A
773-209 T-Mobile USA Chicago Zone 03 N/A
773-210 Illinois Bell Tel Co Chicago Zone 01 N/A
773-212 USA Mobility Wireless Chicago Zone 03 N/A
773-213 New Cingular Wireless PCS Chicago Zone 01 N/A
773-214 USA Mobility Wireless Chicago Zone 01 N/A
773-215 USA Mobility Wireless Chicago Zone 01 N/A
773-216 T-Mobile USA Chicago Zone 01 N/A
773-217 New Cingular Wireless PCS Chicago Zone 09 5/19/2009
773-218 New Cingular Wireless PCS Chicago Zone 01 N/A
773-219 T-Mobile USA Chicago Zone 07 N/A
773-220 T-Mobile USA Chicago Zone 03 N/A
773-221 Illinois Bell Tel Co Chicago Zone 09 N/A
773-222 USA Mobility Wireless Chicago Zone 01 N/A
773-223 USA Mobility Wireless Chicago Zone 06 N/A
773-224 Illinois Bell Tel Co Chicago Zone 07 N/A
773-225 T-Mobile USA Chicago Zone 03 3/15/2006
773-226 T-Mobile USA Chicago Zone 10 11/27/2007
773-227 Illinois Bell Tel Co Chicago Zone 04 N/A
773-228 USA Mobility Wireless Chicago Zone 01 N/A
773-229 Illinois Bell Tel Co Chicago Zone 08 N/A
773-230 New Cingular Wireless PCS Chicago Zone 03 N/A
773-231 Level 3 Communications Chicago Zone 07 9/8/2011
773-232 Onvoy Chicago Zone 10 2/5/2020
773-233 Illinois Bell Tel Co Chicago Zone 10 N/A
773-234 Bandwidth.com Clec Chicago Zone 06 6/26/2009
773-235 Illinois Bell Tel Co Chicago Zone 04 N/A
773-236 T-Mobile USA Chicago Zone 07 6/26/2009
773-237 Illinois Bell Tel Co Chicago Zone 05 N/A
773-238 Illinois Bell Tel Co Chicago Zone 10 N/A
773-239 Illinois Bell Tel Co Chicago Zone 10 N/A
773-240 T-Mobile USA Chicago Zone 10 10/16/2007
773-241 Illinois Bell Tel Co Chicago Zone 07 N/A
773-242 Illinois Bell Tel Co Chicago Zone 06 N/A
773-243 MCIMetro Access Transmission Services Chicago Zone 03 N/A
773-244 Illinois Bell Tel Co Chicago Zone 04 N/A
773-245 Bandwidth.com Clec Chicago Zone 08 6/16/2010
773-246 Indiana Paging Network Chicago Zone 04 N/A
773-247 Illinois Bell Tel Co Chicago Zone 06 N/A
773-248 Illinois Bell Tel Co Chicago Zone 04 N/A
773-249 Level 3 Communications Chicago Zone 11 N/A
773-250 MCIMetro Access Transmission Services Chicago Zone 02 N/A
773-251 New Cingular Wireless PCS Chicago Zone 03 N/A
773-252 Illinois Bell Tel Co Chicago Zone 04 N/A
773-253 Teleport Communications America Chicago Zone 10 N/A
773-254 Illinois Bell Tel Co Chicago Zone 06 N/A
773-255 New Cingular Wireless PCS Chicago Zone 03 N/A
773-256 Illinois Bell Tel Co Chicago Zone 07 N/A
773-257 Illinois Bell Tel Co Chicago Zone 06 N/A
773-258 USA Mobility Wireless Chicago Zone 01 N/A
773-259 New Cingular Wireless PCS Chicago Zone 01 N/A
773-260 Illinois Bell Tel Co Chicago Zone 10 N/A
773-261 Illinois Bell Tel Co Chicago Zone 05 N/A
773-262 Illinois Bell Tel Co Chicago Zone 02 N/A
773-263 T-Mobile USA Chicago Zone 03 N/A
773-264 Illinois Bell Tel Co Chicago Zone 10 N/A
773-265 Illinois Bell Tel Co Chicago Zone 06 N/A
773-266 New Cingular Wireless PCS Chicago Zone 01 N/A
773-267 Illinois Bell Tel Co Chicago Zone 02 N/A
773-268 Illinois Bell Tel Co Chicago Zone 07 N/A
773-269 Teleport Communications America Chicago Zone 04 N/A
773-270 MetroPCS Chicago Zone 04 6/4/2009
773-271 Illinois Bell Tel Co Chicago Zone 02 N/A
773-272 MCIMetro Access Transmission Services Chicago Zone 03 N/A
773-273 Illinois Bell Tel Co Chicago Zone 02 N/A
773-274 Illinois Bell Tel Co Chicago Zone 02 N/A
773-275 Illinois Bell Tel Co Chicago Zone 02 N/A
773-276 Illinois Bell Tel Co Chicago Zone 04 N/A
773-277 Illinois Bell Tel Co Chicago Zone 06 N/A
773-278 Illinois Bell Tel Co Chicago Zone 04 N/A
773-279 Illinois Bell Tel Co Chicago Zone 02 N/A
773-280 T-Mobile USA Chicago Zone 06 N/A
773-281 Illinois Bell Tel Co Chicago Zone 04 N/A
773-282 Illinois Bell Tel Co Chicago Zone 03 N/A
773-283 Illinois Bell Tel Co Chicago Zone 03 N/A
773-284 Illinois Bell Tel Co Chicago Zone 08 N/A
773-285 Illinois Bell Tel Co Chicago Zone 07 N/A
773-286 Illinois Bell Tel Co Chicago Zone 03 N/A
773-287 Illinois Bell Tel Co Chicago Zone 05 N/A
773-288 Illinois Bell Tel Co Chicago Zone 07 N/A
773-289 MCIMetro Access Transmission Services Chicago Zone 04 N/A
773-290 Level 3 Communications Chicago Zone 02 N/A
773-291 Illinois Bell Tel Co Chicago Zone 10 N/A
773-292 Illinois Bell Tel Co Chicago Zone 04 N/A
773-293 Illinois Bell Tel Co Chicago Zone 02 N/A
773-294 New Cingular Wireless PCS Chicago Zone 03 N/A
773-295 MCIMetro Access Transmission Services Chicago Zone 05 N/A
773-296 Illinois Bell Tel Co Chicago Zone 04 N/A
773-297 T-Mobile USA Chicago Zone 03 N/A
773-298 Illinois Bell Tel Co Chicago Zone 10 N/A
773-299 MCIMetro Access Transmission Services Chicago Zone 06 N/A
773-300-XXXX --- 773-399-XXXX
NPANXX Carrier1 Area Served2 Date3
773-300 Onvoy Chicago Zone 05 06/15/2023
773-301 T-Mobile USA Chicago Zone 03 N/A
773-302 T-Mobile USA Chicago Zone 02 2/26/2009
773-303 MCIMetro Access Transmission Services Chicago Zone 02 N/A
773-304 MCIMetro Access Transmission Services Chicago Zone 03 N/A
773-305 MCIMetro Access Transmission Services Chicago Zone 04 N/A
773-306 Teleport Communications America Chicago Zone 08 N/A
773-307 New Cingular Wireless PCS Chicago Zone 01 N/A
773-308 First Communications Chicago Zone 03 N/A
773-309 Paetec Itel Chicago Zone 05 N/A
773-310 T-Mobile USA Chicago Zone 10 3/22/2004
773-312 T-Mobile USA Chicago Zone 02 N/A
773-313 MCIMetro Access Transmission Services Chicago Zone 02 N/A
773-314 MCIMetro Access Transmission Services Chicago Zone 03 N/A
773-315 New Cingular Wireless PCS Chicago Zone 01 N/A
773-316 New Cingular Wireless PCS Chicago Zone 01 N/A
773-317 T-Mobile USA Chicago Zone 01 N/A
773-318 Cellco Partnership Chicago Zone 03 9/7/2004
773-319 T-Mobile USA Chicago Zone 10 N/A
773-320 New Cingular Wireless PCS Chicago Zone 01 N/A
773-321 Level 3 Communications Chicago Zone 06 N/A
773-322 T-Mobile USA Chicago Zone 07 N/A
773-323 American Messaging Services Chicago Zone 02 4/16/2001
773-324 Illinois Bell Tel Co Chicago Zone 07 N/A
773-325 Illinois Bell Tel Co Chicago Zone 04 N/A
773-326 Level 3 Communications Chicago Zone 07 N/A
773-327 Illinois Bell Tel Co Chicago Zone 04 N/A
773-328 First Communications Chicago Zone 04 N/A
773-329 Teleport Communications America Chicago Zone 03 N/A
773-330 New Cingular Wireless PCS Chicago Zone 01 N/A
773-331 MCIMetro Access Transmission Services Chicago Zone 03 N/A
773-332 Cellco Partnership Chicago Zone 03 N/A
773-333 American Messaging Services Chicago Zone 02 4/16/2001
773-334 Illinois Bell Tel Co Chicago Zone 02 N/A
773-335 New Cingular Wireless PCS Chicago Zone 01 N/A
773-336 First Communications Chicago Zone 09 N/A
773-337 MCIMetro Access Transmission Services Chicago Zone 11 N/A
773-338 Illinois Bell Tel Co Chicago Zone 02 N/A
773-339 Cellco Partnership Chicago Zone 01 N/A
773-340 Onvoy Chicago Zone 08 N/A
773-341 First Communications Chicago Zone 10 N/A
773-342 Illinois Bell Tel Co Chicago Zone 04 N/A
773-343 Cellco Partnership Chicago Zone 01 N/A
773-344 MCIMetro Access Transmission Services Chicago Zone 10 N/A
773-345 MCIMetro Access Transmission Services Chicago Zone 05 N/A
773-346 MCIMetro Access Transmission Services Chicago Zone 06 N/A
773-347 MCIMetro Access Transmission Services Chicago Zone 07 N/A
773-348 Illinois Bell Tel Co Chicago Zone 04 N/A
773-349 MCIMetro Access Transmission Services Chicago Zone 08 N/A
773-350 Cellco Partnership Chicago Zone 01 N/A
773-351 New Cingular Wireless PCS Chicago Zone 01 N/A
773-352 Onvoy Chicago Zone 03 7/1/2021
773-353 Level 3 Communications Chicago Zone 03 N/A
773-354 T-Mobile USA Chicago Zone 01 N/A
773-355 Paetec Itel Chicago Zone 03 4/12/2001
773-356 Illinois Bell Tel Co Chicago Zone 09 N/A
773-357 First Communications Chicago Zone 11 N/A
773-358 MCIMetro Access Transmission Services Chicago Zone 07 N/A
773-359 MCIMetro Access Transmission Services Chicago Zone 09 N/A
773-360 Level 3 Communications Chicago Zone 04 N/A
773-361 Illinois Bell Tel Co Chicago Zone 07 N/A
773-362 Paetec Itel Chicago Zone 08 N/A
773-363 Illinois Bell Tel Co Chicago Zone 07 N/A
773-364 Paetec Itel Chicago Zone 09 4/12/2001
773-365 MCIMetro Access Transmission Services Chicago Zone 04 N/A
773-366 T-Mobile USA Chicago Zone 10 9/24/2004
773-367 T-Mobile USA Chicago Zone 03 2/13/2009
773-368 T-Mobile USA Chicago Zone 03 N/A
773-369 New Cingular Wireless PCS Chicago Zone 01 N/A
773-370 T-Mobile USA Chicago Zone 01 N/A
773-371 Illinois Bell Tel Co Chicago Zone 07 N/A
773-372 Cellco Partnership Chicago Zone 03 7/7/2008
773-373 Illinois Bell Tel Co Chicago Zone 07 N/A
773-374 Illinois Bell Tel Co Chicago Zone 09 N/A
773-375 Illinois Bell Tel Co Chicago Zone 09 N/A
773-376 Illinois Bell Tel Co Chicago Zone 06 N/A
773-377 Teleport Communications America Chicago Zone 11 N/A
773-378 Illinois Bell Tel Co Chicago Zone 05 N/A
773-379 Illinois Bell Tel Co Chicago Zone 05 N/A
773-380 Illinois Bell Tel Co Chicago Zone 03 N/A
773-381 Illinois Bell Tel Co Chicago Zone 02 N/A
773-382 Paetec Itel Chicago Zone 09 4/12/2001
773-383 New Cingular Wireless PCS Chicago Zone 03 N/A
773-384 Illinois Bell Tel Co Chicago Zone 04 N/A
773-385 Illinois Bell Tel Co Chicago Zone 05 N/A
773-386 T-Mobile USA Chicago Zone 01 N/A
773-387 T-Mobile USA Chicago Zone 10 6/9/2004
773-388 Illinois Bell Tel Co Chicago Zone 04 N/A
773-389 Bandwidth.com Clec Chicago Zone 09 N/A
773-390 Cellco Partnership Chicago Zone 01 N/A
773-391 New Cingular Wireless PCS Chicago Zone 01 N/A
773-392 T-Mobile USA Chicago Zone 01 N/A
773-393 USA Mobility Wireless Chicago Zone 01 N/A
773-394 Illinois Bell Tel Co Chicago Zone 04 N/A
773-395 Illinois Bell Tel Co Chicago Zone 04 N/A
773-396 Paetec Itel Chicago Zone 10 4/12/2001
773-397 New Cingular Wireless PCS Chicago Zone 03 3/10/2009
773-398 T-Mobile USA Chicago Zone 03 N/A
773-399 Illinois Bell Tel Co Chicago Zone 03 N/A
773-400-XXXX --- 773-499-XXXX
NPANXX Carrier1 Area Served2 Date3
773-400 American Messaging Services Chicago Zone 02 4/16/2001
773-401 New Cingular Wireless PCS Chicago Zone 01 N/A
773-402 New Cingular Wireless PCS Chicago Zone 01 N/A
773-403 T-Mobile USA Chicago Zone 03 N/A
773-404 Illinois Bell Tel Co Chicago Zone 04 N/A
773-405 Cellco Partnership Chicago Zone 01 N/A
773-406 T-Mobile USA Chicago Zone 07 N/A
773-407 T-Mobile USA Chicago Zone 03 N/A
773-408 T-Mobile USA Chicago Zone 06 2/13/2009
773-409 Teleport Communications America Chicago Zone 02 N/A
773-410 T-Mobile USA Chicago Zone 02 N/A
773-412 T-Mobile USA Chicago Zone 03 N/A
773-413 Teleport Communications America Chicago Zone 05 N/A
773-414 T-Mobile USA Chicago Zone 03 9/7/2004
773-415 Cellco Partnership Chicago Zone 01 N/A
773-416 T-Mobile USA Chicago Zone 01 N/A
773-417 Comcast IP Phone Chicago Zone 05 N/A
773-418 T-Mobile USA Chicago Zone 03 N/A
773-419 T-Mobile USA Chicago Zone 01 N/A
773-420 Teleport Communications America Chicago Zone 07 N/A
773-421 Cellco Partnership Chicago Zone 01 N/A
773-422 Cellco Partnership Chicago Zone 01 N/A
773-423 MCIMetro Access Transmission Services Chicago Zone 02 N/A
773-424 Teleport Communications America Chicago Zone 08 N/A
773-425 T-Mobile USA Chicago Zone 03 N/A
773-426 T-Mobile USA Chicago Zone 03 1/4/2002
773-427 Illinois Bell Tel Co Chicago Zone 03 N/A
773-428 New Cingular Wireless PCS Chicago Zone 01 N/A
773-429 Illinois Bell Tel Co Chicago Zone 10 N/A
773-430 T-Mobile USA Chicago Zone 03 N/A
773-431 New Cingular Wireless PCS Chicago Zone 03 11/5/2008
773-432 First Communications Chicago Zone 08 N/A
773-433 T-Mobile USA Chicago Zone 02 N/A
773-434 Illinois Bell Tel Co Chicago Zone 08 N/A
773-435 MCIMetro Access Transmission Services Chicago Zone 04 N/A
773-436 Illinois Bell Tel Co Chicago Zone 08 N/A
773-437 Teleport Communications America Chicago Zone 09 N/A
773-438 USA Mobility Wireless Chicago Zone 01 N/A
773-439 Rcn Telecom Services Of Illinios Chicago Zone 03 N/A
773-440 MetroPCS Chicago Zone 10 N/A
773-441 New Cingular Wireless PCS Chicago Zone 03 8/21/2008
773-442 MCIMetro Access Transmission Services Chicago Zone 02 N/A
773-443 T-Mobile USA Chicago Zone 01 N/A
773-444 Illinois Bell Tel Co Chicago Zone 03 N/A
773-445 Illinois Bell Tel Co Chicago Zone 10 N/A
773-446 Level 3 Communications Chicago Zone 06 N/A
773-447 T-Mobile USA Chicago Zone 01 N/A
773-448 Onvoy Chicago Zone 07 10/15/2025
773-449 Rcn Telecom Services Of Illinios Chicago Zone 09 N/A
773-450 New Cingular Wireless PCS Chicago Zone 01 N/A
773-451 Illinois Bell Tel Co Chicago Zone 07 N/A
773-452 Cellco Partnership Chicago Zone 01 N/A
773-453 MCIMetro Access Transmission Services Chicago Zone 11 N/A
773-454 T-Mobile USA Chicago Zone 03 N/A
773-455 MCIMetro Access Transmission Services Chicago Zone 11 N/A
773-456 New Cingular Wireless PCS Chicago Zone 03 N/A
773-457 T-Mobile USA Chicago Zone 07 N/A
773-458 MCIMetro Access Transmission Services Chicago Zone 03 N/A
773-459 T-Mobile USA Chicago Zone 01 N/A
773-460 USA Mobility Wireless Chicago Zone 01 N/A
773-461 T-Mobile USA Chicago Zone 01 N/A
773-462 Illinois Bell Tel Co Chicago Zone 11 N/A
773-463 Illinois Bell Tel Co Chicago Zone 02 N/A
773-464 USA Mobility Wireless Chicago Zone 01 N/A
773-465 Illinois Bell Tel Co Chicago Zone 02 N/A
773-466 MCIMetro Access Transmission Services Chicago Zone 05 N/A
773-467 Illinois Bell Tel Co Chicago Zone 03 N/A
773-468 Illinois Bell Tel Co Chicago Zone 10 N/A
773-469 T-Mobile USA Chicago Zone 01 N/A
773-470 MCIMetro Access Transmission Services Chicago Zone 08 N/A
773-471 Illinois Bell Tel Co Chicago Zone 08 N/A
773-472 Illinois Bell Tel Co Chicago Zone 04 N/A
773-473 Illinois Bell Tel Co Chicago Zone 05 N/A
773-474 Paetec Itel Chicago Zone 10 4/12/2001
773-475 Teleport Communications America Chicago Zone 06 N/A
773-476 Illinois Bell Tel Co Chicago Zone 08 N/A
773-477 Illinois Bell Tel Co Chicago Zone 04 N/A
773-478 Illinois Bell Tel Co Chicago Zone 02 N/A
773-479 Illinois Bell Tel Co Chicago Zone 05 N/A
773-480 New Cingular Wireless PCS Chicago Zone 01 N/A
773-481 Illinois Bell Tel Co Chicago Zone 03 N/A
773-482 Paetec Itel Chicago Zone 11 4/12/2001
773-483 Illinois Bell Tel Co Chicago Zone 07 N/A
773-484 Cellco Partnership Chicago Zone 07 N/A
773-485 Cellco Partnership Chicago Zone 01 N/A
773-486 Illinois Bell Tel Co Chicago Zone 04 N/A
773-487 Illinois Bell Tel Co Chicago Zone 07 N/A
773-488 Illinois Bell Tel Co Chicago Zone 07 N/A
773-489 Illinois Bell Tel Co Chicago Zone 04 N/A
773-490 New Cingular Wireless PCS Chicago Zone 03 N/A
773-491 T-Mobile USA Chicago Zone 03 N/A
773-492 Bandwidth.com Clec Chicago Zone 08 8/23/2011
773-493 Illinois Bell Tel Co Chicago Zone 07 N/A
773-494 T-Mobile USA Chicago Zone 03 10/13/2004
773-495 T-Mobile USA Chicago Zone 01 N/A
773-496 Paetec Itel Chicago Zone 07 4/12/2001
773-497 Cellco Partnership Chicago Zone 01 N/A
773-498 Teleport Communications America Chicago Zone 08 N/A
773-499 T-Mobile USA Chicago Zone 03 9/28/2004
773-500-XXXX --- 773-599-XXXX
NPANXX Carrier1 Area Served2 Date3
773-500 Onvoy Chicago Zone 10 06/15/2023
773-501 T-Mobile USA Chicago Zone 03 2/12/2001
773-502 Cellco Partnership Chicago Zone 01 N/A
773-503 T-Mobile USA Chicago Zone 10 11/17/2004
773-504 New Cingular Wireless PCS Chicago Zone 01 N/A
773-505 Cellco Partnership Chicago Zone 01 N/A
773-506 Illinois Bell Tel Co Chicago Zone 02 N/A
773-507 T-Mobile USA Chicago Zone 03 2/14/2001
773-508 Illinois Bell Tel Co Chicago Zone 02 N/A
773-509 Illinois Bell Tel Co Chicago Zone 02 N/A
773-510 T-Mobile USA Chicago Zone 03 4/4/2002
773-512 T-Mobile USA Chicago Zone 03 10/13/2004
773-513 New Cingular Wireless PCS Chicago Zone 01 N/A
773-514 New Cingular Wireless PCS Chicago Zone 02 4/16/2001
773-515 Cellco Partnership Chicago Zone 01 N/A
773-516 Peerless Network Of Illinois Chicago Zone 02 N/A
773-517 T-Mobile USA Chicago Zone 01 N/A
773-518 Cellco Partnership Chicago Zone 01 N/A
773-519 Cellco Partnership Chicago Zone 01 N/A
773-520 Cellco Partnership Chicago Zone 01 N/A
773-521 Illinois Bell Tel Co Chicago Zone 06 N/A
773-522 Illinois Bell Tel Co Chicago Zone 06 N/A
773-523 Illinois Bell Tel Co Chicago Zone 06 N/A
773-524 Level 3 Communications Chicago Zone 04 N/A
773-525 Illinois Bell Tel Co Chicago Zone 04 N/A
773-526 Paetec Itel Chicago Zone 08 4/12/2001
773-527 Level 3 Communications Chicago Zone 03 N/A
773-528 Illinois Bell Tel Co Chicago Zone 04 N/A
773-529 Illinois Bell Tel Co Chicago Zone 04 N/A
773-530 Comcast IP Phone Chicago Zone 09 12/30/2004
773-531 T-Mobile USA Chicago Zone 03 N/A
773-532 New Cingular Wireless PCS Chicago Zone 01 N/A
773-533 Illinois Bell Tel Co Chicago Zone 06 N/A
773-534 Illinois Bell Tel Co Chicago Zone 06 N/A
773-535 Illinois Bell Tel Co Chicago Zone 06 N/A
773-536 Illinois Bell Tel Co Chicago Zone 07 N/A
773-537 First Communications Chicago Zone 04 5/24/2004
773-538 Illinois Bell Tel Co Chicago Zone 07 N/A
773-539 Illinois Bell Tel Co Chicago Zone 02 N/A
773-540 T-Mobile USA Chicago Zone 03 12/28/2004
773-541 Level 3 Communications Chicago Zone 02 N/A
773-542 Illinois Bell Tel Co Chicago Zone 06 N/A
773-543 T-Mobile USA Chicago Zone 04 10/26/2007
773-544 T-Mobile USA Chicago Zone 01 N/A
773-545 Illinois Bell Tel Co Chicago Zone 03 N/A
773-546 Illinois Bell Tel Co Chicago Zone 10 N/A
773-547 New Cingular Wireless PCS Chicago Zone 01 N/A
773-548 Illinois Bell Tel Co Chicago Zone 07 N/A
773-549 Illinois Bell Tel Co Chicago Zone 04 N/A
773-550 Cellco Partnership Chicago Zone 01 N/A
773-551 New Cingular Wireless PCS Chicago Zone 03 N/A
773-552 T-Mobile USA Chicago Zone 01 N/A
773-553 Illinois Bell Tel Co Chicago Zone 06 N/A
773-554 T-Mobile USA Chicago Zone 03 7/1/2009
773-556 T-Mobile USA Chicago Zone 03 N/A
773-557 Paetec Itel Chicago Zone 03 N/A
773-558 Cellco Partnership Chicago Zone 03 1/15/2007
773-559 T-Mobile USA Chicago Zone 03 1/10/2005
773-560 Teleport Communications America Chicago Zone 01 N/A
773-561 Illinois Bell Tel Co Chicago Zone 02 N/A
773-562 T-Mobile USA Chicago Zone 03 N/A
773-563 MetroPCS Chicago Zone 10 10/19/2005
773-564 Teleport Communications America Chicago Zone 02 N/A
773-565 First Communications Chicago Zone 06 5/21/2004
773-566 USA Mobility Wireless Chicago Zone 01 N/A
773-567 MetroPCS Chicago Zone 03 4/22/2005
773-568 Illinois Bell Tel Co Chicago Zone 10 N/A
773-569 Illinois Bell Tel Co Chicago Zone 03 N/A
773-570 Level 3 Communications Chicago Zone 11 N/A
773-571 Cellco Partnership Chicago Zone 07 2/20/2007
773-572 Level 3 Communications Chicago Zone 04 N/A
773-573 Cellco Partnership Chicago Zone 07 N/A
773-574 T-Mobile USA Chicago Zone 10 3/21/2006
773-575 New Cingular Wireless PCS Chicago Zone 03 N/A
773-576 New Cingular Wireless PCS Chicago Zone 01 N/A
773-577 Paetec Itel Chicago Zone 03 4/12/2001
773-578 New Cingular Wireless PCS Chicago Zone 01 N/A
773-579 Illinois Bell Tel Co Chicago Zone 06 N/A
773-580 New Cingular Wireless PCS Chicago Zone 03 N/A
773-581 Illinois Bell Tel Co Chicago Zone 08 N/A
773-582 Illinois Bell Tel Co Chicago Zone 08 N/A
773-583 Illinois Bell Tel Co Chicago Zone 02 N/A
773-584 MCIMetro Access Transmission Services Chicago Zone 06 N/A
773-585 Illinois Bell Tel Co Chicago Zone 08 N/A
773-586 Illinois Bell Tel Co Chicago Zone 08 N/A
773-587 T-Mobile USA Chicago Zone 03 1/8/2007
773-588 Illinois Bell Tel Co Chicago Zone 02 N/A
773-589 Illinois Bell Tel Co Chicago Zone 05 N/A
773-590 Cellco Partnership Chicago Zone 01 N/A
773-591 Illinois Bell Tel Co Chicago Zone 01 N/A
773-592 T-Mobile USA Chicago Zone 03 N/A
773-593 T-Mobile USA Chicago Zone 01 N/A
773-594 Illinois Bell Tel Co Chicago Zone 03 N/A
773-595 T-Mobile USA Chicago Zone 07 10/30/2006
773-596 Paetec Itel Chicago Zone 02 4/12/2001
773-597 First Communications Chicago Zone 07 1/21/2005
773-598 MCIMetro Access Transmission Services Chicago Zone 04 N/A
773-599 Onvoy Chicago Zone 08 N/A
773-600-XXXX --- 773-699-XXXX
NPANXX Carrier1 Area Served2 Date3
773-600 T-Mobile USA Chicago Zone 10 7/20/2004
773-601 Illinois Bell Tel Co Chicago Zone 11 N/A
773-602 Illinois Bell Tel Co Chicago Zone 07 N/A
773-603 T-Mobile USA Chicago Zone 10 6/30/2005
773-604 Illinois Bell Tel Co Chicago Zone 02 N/A
773-605 First Communications Chicago Zone 02 4/5/2006
773-606 T-Mobile USA Chicago Zone 03 7/14/2005
773-607 New Cingular Wireless PCS Chicago Zone 01 N/A
773-608 New Cingular Wireless PCS Chicago Zone 01 N/A
773-609 Onvoy Chicago Zone 10 N/A
773-610 New Cingular Wireless PCS Chicago Zone 03 10/17/2001
773-612 New Cingular Wireless PCS Chicago Zone 01 N/A
773-613 New Cingular Wireless PCS Chicago Zone 01 N/A
773-614 T-Mobile USA Chicago Zone 10 11/8/2006
773-615 T-Mobile USA Chicago Zone 10 11/30/2001
773-616 T-Mobile USA Chicago Zone 01 N/A
773-617 T-Mobile USA Chicago Zone 01 N/A
773-618 New Cingular Wireless PCS Chicago Zone 01 N/A
773-619 T-Mobile USA Chicago Zone 03 3/9/2001
773-620 New Cingular Wireless PCS Chicago Zone 03 N/A
773-621 T-Mobile USA Chicago Zone 03 10/10/2005
773-622 Illinois Bell Tel Co Chicago Zone 05 N/A
773-623 New Cingular Wireless PCS Chicago Zone 01 N/A
773-624 Illinois Bell Tel Co Chicago Zone 07 N/A
773-625 Illinois Bell Tel Co Chicago Zone 05 N/A
773-626 Illinois Bell Tel Co Chicago Zone 05 N/A
773-627 Paetec Itel Chicago Zone 08 4/12/2001
773-628 Teleport Communications America Chicago Zone 03 N/A
773-629 T-Mobile USA Chicago Zone 10 11/8/2006
773-630 New Cingular Wireless PCS Chicago Zone 03 3/10/2009
773-631 Illinois Bell Tel Co Chicago Zone 03 N/A
773-632 MCIMetro Access Transmission Services Chicago Zone 03 N/A
773-633 Cellco Partnership Chicago Zone 07 N/A
773-634 MCIMetro Access Transmission Services Chicago Zone 04 N/A
773-635 Level 3 Communications Chicago Zone 06 N/A
773-636 Cellco Partnership Chicago Zone 01 N/A
773-637 Illinois Bell Tel Co Chicago Zone 05 N/A
773-638 Illinois Bell Tel Co Chicago Zone 06 N/A
773-639 T-Mobile USA Chicago Zone 03 10/17/2007
773-640 Paetec Itel Chicago Zone 06 4/12/2001
773-641 T-Mobile USA Chicago Zone 03 9/13/2005
773-642 T-Mobile USA Chicago Zone 03 3/15/2007
773-643 Illinois Bell Tel Co Chicago Zone 07 N/A
773-644 Teleport Communications America Chicago Zone 02 1/5/2011
773-645 Illinois Bell Tel Co Chicago Zone 04 N/A
773-646 Illinois Bell Tel Co Chicago Zone 09 N/A
773-647 T-Mobile USA Chicago Zone 03 10/17/2007
773-648 Paetec Itel Chicago Zone 06 4/12/2001
773-649 Paetec Itel Chicago Zone 02 4/12/2001
773-650 Illinois Bell Tel Co Chicago Zone 06 N/A
773-651 Illinois Bell Tel Co Chicago Zone 07 N/A
773-652 USA Mobility Wireless Chicago Zone 01 N/A
773-653 Paetec Itel Chicago Zone 03 N/A
773-654 Paetec Itel Chicago Zone 02 4/12/2001
773-655 T-Mobile USA Chicago Zone 03 3/27/2002
773-656 T-Mobile USA Chicago Zone 10 6/30/2005
773-657 MetroPCS Chicago Zone 03 3/5/2007
773-658 New Cingular Wireless PCS Chicago Zone 05 N/A
773-659 New Cingular Wireless PCS Chicago Zone 01 N/A
773-660 Illinois Bell Tel Co Chicago Zone 10 N/A
773-661 Paetec Itel Chicago Zone 04 4/12/2001
773-662 Cellco Partnership Chicago Zone 01 N/A
773-663 T-Mobile USA Chicago Zone 03 N/A
773-664 Paetec Itel Chicago Zone 05 4/12/2001
773-665 Illinois Bell Tel Co Chicago Zone 04 N/A
773-666 Bandwidth.com Clec Chicago Zone 04 5/20/2011
773-667 Illinois Bell Tel Co Chicago Zone 07 N/A
773-668 Level 3 Communications Chicago Zone 05 4/27/2006
773-669 Bandwidth.com Clec Chicago Zone 05 6/8/2009
773-670 New Cingular Wireless PCS Chicago Zone 10 09/03/2024
773-671 T-Mobile USA Chicago Zone 01 N/A
773-672 T-Mobile USA Chicago Zone 10 2/29/2008
773-673 Paetec Itel Chicago Zone 05 4/12/2001
773-674 Illinois Bell Tel Co Chicago Zone 06 5/15/2008
773-675 Cellco Partnership Chicago Zone 07 7/7/2008
773-676 Teleport Communications America Chicago Zone 05 N/A
773-677 New Cingular Wireless PCS Chicago Zone 03 3/7/2002
773-678 T-Mobile USA Chicago Zone 03 2/21/2005
773-679 T-Mobile USA Chicago Zone 10 7/26/2006
773-680 New Cingular Wireless PCS Chicago Zone 03 2/2/2001
773-681 MCIMetro Access Transmission Services Chicago Zone 02 N/A
773-682 Cellco Partnership Chicago Zone 03 10/17/2005
773-683 New Cingular Wireless PCS Chicago Zone 03 1/23/2008
773-684 Illinois Bell Tel Co Chicago Zone 07 N/A
773-685 Illinois Bell Tel Co Chicago Zone 03 N/A
773-686 Illinois Bell Tel Co Chicago Zone 11 N/A
773-687 Teleport Communications America Chicago Zone 04 N/A
773-688 Rcn Telecom Services Of Illinios Chicago Zone 05 7/27/2004
773-689 Cellco Partnership Chicago Zone 01 N/A
773-690 T-Mobile USA Chicago Zone 07 11/5/2008
773-691 T-Mobile USA Chicago Zone 08 7/10/2007
773-692 Onvoy Chicago Zone 04 1/31/2019
773-693 Illinois Bell Tel Co Chicago Zone 03 N/A
773-694 Illinois Bell Tel Co Chicago Zone 11 N/A
773-695 Illinois Bell Tel Co Chicago Zone 03 N/A
773-696 Paetec Itel Chicago Zone 06 N/A
773-697 Paetec Itel Chicago Zone 04 4/12/2001
773-698 T-Mobile USA Chicago Zone 04 6/13/2007
773-699 T-Mobile USA Chicago Zone 03 4/19/2005
773-701-XXXX --- 773-799-XXXX
NPANXX Carrier1 Area Served2 Date3
773-701 T-Mobile USA Chicago Zone 10 9/30/2005
773-702 Illinois Bell Tel Co Chicago Zone 07 N/A
773-703 New Cingular Wireless PCS Chicago Zone 10 9/2/2008
773-704 T-Mobile USA Chicago Zone 03 1/23/2002
773-705 Cellco Partnership Chicago Zone 04 08/28/2024
773-706 Cellco Partnership Chicago Zone 03 7/18/2005
773-707 New Cingular Wireless PCS Chicago Zone 10 11/5/2008
773-708 New Cingular Wireless PCS Chicago Zone 10 11/5/2008
773-709 New Cingular Wireless PCS Chicago Zone 03 11/5/2008
773-710 New Cingular Wireless PCS Chicago Zone 03 4/16/2001
773-712 New Cingular Wireless PCS Chicago Zone 03 11/5/2008
773-713 American Messaging Services Chicago Zone 02 N/A
773-714 Illinois Bell Tel Co Chicago Zone 03 N/A
773-715 T-Mobile USA Chicago Zone 06 10/16/2002
773-716 T-Mobile USA Chicago Zone 01 N/A
773-717 Cellco Partnership Chicago Zone 07 9/16/2008
773-718 Cellco Partnership Chicago Zone 01 N/A
773-719 T-Mobile USA Chicago Zone 01 N/A
773-720 Cellco Partnership Chicago Zone 01 N/A
773-721 Illinois Bell Tel Co Chicago Zone 09 N/A
773-722 Illinois Bell Tel Co Chicago Zone 06 N/A
773-723 Illinois Bell Tel Co Chicago Zone 07 N/A
773-724 Cellco Partnership Chicago Zone 03 10/17/2005
773-725 Illinois Bell Tel Co Chicago Zone 03 N/A
773-726 Paetec Itel Chicago Zone 07 4/12/2001
773-727 T-Mobile USA Chicago Zone 10 10/16/2002
773-728 Illinois Bell Tel Co Chicago Zone 02 N/A
773-729 Paetec Itel Chicago Zone 07 4/12/2001
773-730 Illinois Bell Tel Co Chicago Zone 02 N/A
773-731 Illinois Bell Tel Co Chicago Zone 09 N/A
773-732 T-Mobile USA Chicago Zone 03 N/A
773-733 Paetec Itel Chicago Zone 06 4/12/2001
773-734 Illinois Bell Tel Co Chicago Zone 09 N/A
773-735 Illinois Bell Tel Co Chicago Zone 08 N/A
773-736 Illinois Bell Tel Co Chicago Zone 03 N/A
773-737 Illinois Bell Tel Co Chicago Zone 08 N/A
773-738 MetroPCS Chicago Zone 03 8/29/2007
773-739 T-Mobile USA Chicago Zone 02 N/A
773-740 T-Mobile USA Chicago Zone 02 4/16/2001
773-741 Illinois Bell Tel Co Chicago Zone 11 N/A
773-742 T-Mobile USA Chicago Zone 03 11/5/2001
773-743 Illinois Bell Tel Co Chicago Zone 02 N/A
773-744 T-Mobile USA Chicago Zone 06 8/30/2001
773-745 Illinois Bell Tel Co Chicago Zone 05 N/A
773-746 T-Mobile USA Chicago Zone 03 N/A
773-747 T-Mobile USA Chicago Zone 04 1/7/2008
773-748 Indiana Paging Network Chicago Zone 10 N/A
773-749 T-Mobile USA Chicago Zone 03 6/19/2007
773-750 New Cingular Wireless PCS Chicago Zone 03 9/13/2001
773-751 MCIMetro Access Transmission Services Chicago Zone 02 N/A
773-752 Illinois Bell Tel Co Chicago Zone 07 N/A
773-753 Illinois Bell Tel Co Chicago Zone 07 N/A
773-754 Comcast IP Phone Chicago Zone 02 10/24/2006
773-755 Illinois Bell Tel Co Chicago Zone 04 N/A
773-756 MCIMetro Access Transmission Services Chicago Zone 03 N/A
773-757 Teleport Communications America Chicago Zone 08 6/28/2001
773-758 Cellco Partnership Chicago Zone 01 N/A
773-759 T-Mobile USA Chicago Zone 03 5/21/2002
773-760 Cellco Partnership Chicago Zone 01 N/A
773-761 Illinois Bell Tel Co Chicago Zone 02 N/A
773-762 Illinois Bell Tel Co Chicago Zone 06 N/A
773-763 Illinois Bell Tel Co Chicago Zone 03 N/A
773-764 Illinois Bell Tel Co Chicago Zone 02 N/A
773-765 Teleport Communications America Chicago Zone 02 N/A
773-766 Cellco Partnership Chicago Zone 03 9/15/2008
773-767 Illinois Bell Tel Co Chicago Zone 08 N/A
773-768 Illinois Bell Tel Co Chicago Zone 09 N/A
773-769 Illinois Bell Tel Co Chicago Zone 02 N/A
773-770 Paetec Itel Chicago Zone 04 N/A
773-771 Cellco Partnership Chicago Zone 01 N/A
773-772 Illinois Bell Tel Co Chicago Zone 04 N/A
773-773 Onvoy Spectrum Chicago Zone 09 05/18/2023
773-774 Illinois Bell Tel Co Chicago Zone 03 N/A
773-775 Illinois Bell Tel Co Chicago Zone 03 N/A
773-776 Illinois Bell Tel Co Chicago Zone 08 N/A
773-777 Illinois Bell Tel Co Chicago Zone 03 N/A
773-778 Illinois Bell Tel Co Chicago Zone 08 N/A
773-779 Illinois Bell Tel Co Chicago Zone 10 N/A
773-780 T-Mobile USA Chicago Zone 08 N/A
773-781 American Messaging Services Chicago Zone 01 4/23/2001
773-782 Illinois Bell Tel Co Chicago Zone 04 N/A
773-783 Illinois Bell Tel Co Chicago Zone 07 N/A
773-784 Illinois Bell Tel Co Chicago Zone 02 N/A
773-785 Illinois Bell Tel Co Chicago Zone 10 N/A
773-786 Paetec Itel Chicago Zone 05 N/A
773-787 MCIMetro Access Transmission Services Chicago Zone 10 N/A
773-788 Illinois Bell Tel Co Chicago Zone 08 N/A
773-789 Rcn Telecom Services Of Illinios Chicago Zone 08 7/12/2007
773-790 Level 3 Communications Chicago Zone 03 N/A
773-791 New Cingular Wireless PCS Chicago Zone 03 5/25/2001
773-792 Illinois Bell Tel Co Chicago Zone 03 N/A
773-793 T-Mobile USA Chicago Zone 03 N/A
773-794 Illinois Bell Tel Co Chicago Zone 03 N/A
773-795 Illinois Bell Tel Co Chicago Zone 07 N/A
773-796 Level 3 Communications Chicago Zone 02 11/1/2010
773-797 Level 3 Communications Chicago Zone 05 N/A
773-798 Cellco Partnership Chicago Zone 07 8/21/2008
773-799 MCIMetro Access Transmission Services Chicago Zone 04 N/A
773-800-XXXX --- 773-899-XXXX
NPANXX Carrier1 Area Served2 Date3
773-800 Level 3 Communications Chicago Zone 02 6/25/2009
773-801 Illinois Bell Tel Co Chicago Zone 06 5/19/2006
773-802 Cellco Partnership Chicago Zone 01 N/A
773-803 T-Mobile USA Chicago Zone 03 3/15/2007
773-804 Illinois Bell Tel Co Chicago Zone 05 N/A
773-805 Cellco Partnership Chicago Zone 01 N/A
773-806 New Cingular Wireless PCS Chicago Zone 01 N/A
773-807 T-Mobile USA Chicago Zone 02 8/15/2002
773-808 T-Mobile USA Chicago Zone 07 N/A
773-809 T-Mobile USA Chicago Zone 03 9/8/2008
773-810 New Cingular Wireless PCS Chicago Zone 01 N/A
773-812 New Cingular Wireless PCS Chicago Zone 03 3/23/2009
773-813 New Cingular Wireless PCS Chicago Zone 01 N/A
773-814 T-Mobile USA Chicago Zone 03 7/22/2002
773-815 New Cingular Wireless PCS Chicago Zone 03 3/31/2009
773-816 T-Mobile USA Chicago Zone 10 3/28/2005
773-817 T-Mobile USA Chicago Zone 03 10/16/2002
773-818 T-Mobile USA Chicago Zone 01 N/A
773-819 Onvoy Chicago Zone 07 N/A
773-820 New Cingular Wireless PCS Chicago Zone 01 N/A
773-821 Illinois Bell Tel Co Chicago Zone 10 N/A
773-822 T-Mobile USA Chicago Zone 06 N/A
773-823 Teleport Communications America Chicago Zone 06 N/A
773-824 Teleport Communications America Chicago Zone 03 N/A
773-825 Illinois Bell Tel Co Chicago Zone 11 N/A
773-826 Illinois Bell Tel Co Chicago Zone 06 N/A
773-827 T-Mobile USA Chicago Zone 06 N/A
773-828 Level 3 Communications Chicago Zone 02 N/A
773-829 Level 3 Communications Chicago Zone 04 N/A
773-830 MCIMetro Access Transmission Services Chicago Zone 05 N/A
773-831 Level 3 Communications Chicago Zone 11 N/A
773-832 Illinois Bell Tel Co Chicago Zone 04 N/A
773-833 Cellco Partnership Chicago Zone 01 N/A
773-834 Illinois Bell Tel Co Chicago Zone 07 N/A
773-835 Cellco Partnership Chicago Zone 01 N/A
773-836 Illinois Bell Tel Co Chicago Zone 05 N/A
773-837 T-Mobile USA Chicago Zone 04 8/8/2001
773-838 Illinois Bell Tel Co Chicago Zone 08 N/A
773-839 Onvoy Chicago Zone 04 11/23/2015
773-840 Paetec Itel Chicago Zone 10 6/23/2006
773-841 New Cingular Wireless PCS Chicago Zone 01 N/A
773-842 T-Mobile USA Chicago Zone 01 N/A
773-843 Illinois Bell Tel Co Chicago Zone 06 N/A
773-844 New Cingular Wireless PCS Chicago Zone 03 5/25/2001
773-845 American Messaging Services Chicago Zone 01 4/23/2001
773-846 Illinois Bell Tel Co Chicago Zone 07 N/A
773-847 Illinois Bell Tel Co Chicago Zone 06 N/A
773-848 Cellco Partnership Chicago Zone 01 N/A
773-849 Cellco Partnership Chicago Zone 03 2/20/2007
773-850 Cellco Partnership Chicago Zone 03 8/21/2008
773-851 T-Mobile USA Chicago Zone 07 3/9/2001
773-852 New Cingular Wireless PCS Chicago Zone 01 N/A
773-853 T-Mobile USA Chicago Zone 03 10/3/2006
773-854 Illinois Bell Tel Co Chicago Zone 05 N/A
773-855 Rcn Telecom Services Of Illinios Chicago Zone 07 N/A
773-856 Rcn Telecom Services Of Illinios Chicago Zone 02 N/A
773-857 Rcn Telecom Services Of Illinios Chicago Zone 04 N/A
773-858 T-Mobile USA Chicago Zone 02 7/6/2001
773-859 Cellco Partnership Chicago Zone 01 N/A
773-860 New Cingular Wireless PCS Chicago Zone 01 N/A
773-861 New Cingular Wireless PCS Chicago Zone 03 09/03/2024
773-862 Illinois Bell Tel Co Chicago Zone 04 N/A
773-863 Illinois Bell Tel Co Chicago Zone 08 N/A
773-864 Illinois Bell Tel Co Chicago Zone 03 N/A
773-865 T-Mobile USA Chicago Zone 02 8/30/2001
773-866 Illinois Bell Tel Co Chicago Zone 02 N/A
773-867 Illinois Bell Tel Co Chicago Zone 03 N/A
773-868 Illinois Bell Tel Co Chicago Zone 04 N/A
773-869 Illinois Bell Tel Co Chicago Zone 06 N/A
773-870 New Cingular Wireless PCS Chicago Zone 03 8/6/2002
773-871 Illinois Bell Tel Co Chicago Zone 04 N/A
773-872 Onvoy Chicago Zone 04 06/08/2023
773-873 Illinois Bell Tel Co Chicago Zone 07 N/A
773-874 Illinois Bell Tel Co Chicago Zone 07 N/A
773-875 T-Mobile USA Chicago Zone 08 9/6/2001
773-876 MetroPCS Chicago Zone 03 3/20/2006
773-877 T-Mobile USA Chicago Zone 03 7/21/2006
773-878 Illinois Bell Tel Co Chicago Zone 02 N/A
773-879 T-Mobile USA Chicago Zone 01 N/A
773-880 Illinois Bell Tel Co Chicago Zone 04 N/A
773-881 Illinois Bell Tel Co Chicago Zone 10 N/A
773-882 Cellco Partnership Chicago Zone 01 N/A
773-883 Illinois Bell Tel Co Chicago Zone 04 N/A
773-884 Illinois Bell Tel Co Chicago Zone 08 N/A
773-885 T-Mobile USA Chicago Zone 03 3/8/2005
773-886 T-Mobile USA Chicago Zone 07 10/31/2007
773-887 MCIMetro Access Transmission Services Chicago Zone 05 N/A
773-888 Bandwidth.com Clec Chicago Zone 04 6/25/2009
773-889 Illinois Bell Tel Co Chicago Zone 05 N/A
773-890 Illinois Bell Tel Co Chicago Zone 06 N/A
773-891 Comcast IP Phone Chicago Zone 07 10/18/2006
773-892 Illinois Bell Tel Co Chicago Zone 07 N/A
773-893 MCIMetro Access Transmission Services Chicago Zone 06 N/A
773-894 Illinois Bell Tel Co Chicago Zone 11 N/A
773-895 T-Mobile USA Chicago Zone 01 8/30/2001
773-896 MCIMetro Access Transmission Services Chicago Zone 07 N/A
773-897 Peerless Network Of Illinois Chicago Zone 02 3/28/2008
773-898 Cellco Partnership Chicago Zone 01 N/A
773-899 Cellco Partnership Chicago Zone 03 3/15/2006
773-900-XXXX --- 773-999-XXXX
NPANXX Carrier1 Area Served2 Date3
773-900 Fractel Chicago Zone 03 8/19/2019
773-901 New Cingular Wireless PCS Chicago Zone 10 5/15/2009
773-902 Level 3 Communications Chicago Zone 09 N/A
773-903 Onvoy Chicago Zone 06 08/14/2025
773-904 Level 3 Communications Chicago Zone 04 5/12/2008
773-905 Level 3 Communications Chicago Zone 10 N/A
773-906 Level 3 Communications Chicago Zone 11 N/A
773-907 Illinois Bell Tel Co Chicago Zone 02 N/A
773-908 T-Mobile USA Chicago Zone 01 N/A
773-909 Cellco Partnership Chicago Zone 01 N/A
773-910 New Cingular Wireless PCS Chicago Zone 01 N/A
773-912 Level 3 Communications Chicago Zone 08 N/A
773-913 Level 3 Communications Chicago Zone 09 N/A
773-914 Cellco Partnership Chicago Zone 01 N/A
773-915 Level 3 Communications Chicago Zone 07 N/A
773-916 T-Mobile USA Chicago Zone 06 8/31/2010
773-917 MCIMetro Access Transmission Services Chicago Zone 11 N/A
773-918 Illinois Bell Tel Co Chicago Zone 08 N/A
773-919 Cellco Partnership Chicago Zone 01 N/A
773-920 Level 3 Communications Chicago Zone 06 N/A
773-921 Illinois Bell Tel Co Chicago Zone 05 N/A
773-922 Level 3 Communications Chicago Zone 05 N/A
773-923 New Cingular Wireless PCS Chicago Zone 03 5/1/2020
773-924 Illinois Bell Tel Co Chicago Zone 07 N/A
773-925 Illinois Bell Tel Co Chicago Zone 08 N/A
773-926 Illinois Bell Tel Co Chicago Zone 07 N/A
773-927 Illinois Bell Tel Co Chicago Zone 06 N/A
773-928 Illinois Bell Tel Co Chicago Zone 10 N/A
773-929 Illinois Bell Tel Co Chicago Zone 04 N/A
773-930 T-Mobile USA Chicago Zone 03 1/8/2007
773-931 T-Mobile USA Chicago Zone 10 5/23/2001
773-932 Level 3 Communications Chicago Zone 03 N/A
773-933 Illinois Bell Tel Co Chicago Zone 09 N/A
773-934 T-Mobile USA Chicago Zone 03 8/21/2002
773-935 Illinois Bell Tel Co Chicago Zone 04 N/A
773-936 T-Mobile USA Chicago Zone 07 8/30/2001
773-937 Rcn Telecom Services Of Illinios Chicago Zone 08 N/A
773-938 Level 3 Communications Chicago Zone 04 N/A
773-939 T-Mobile USA Chicago Zone 08 2/21/2007
773-940 Comcast IP Phone Chicago Zone 06 11/17/2008
773-941 T-Mobile USA Chicago Zone 10 11/27/2007
773-942 Level 3 Communications Chicago Zone 02 N/A
773-943 T-Mobile USA Chicago Zone 02 9/3/2010
773-944 Rcn Telecom Services Of Illinios Chicago Zone 02 N/A
773-945 Peerless Network Of Illinois Chicago Zone 05 6/25/2008
773-946 Level 3 Communications Chicago Zone 10 5/22/2007
773-947 Illinois Bell Tel Co Chicago Zone 07 N/A
773-948 MCIMetro Access Transmission Services Chicago Zone 08 N/A
773-949 T-Mobile USA Chicago Zone 03 2/24/2011
773-951 Cellco Partnership Chicago Zone 03 10/16/2006
773-952 T-Mobile USA Chicago Zone 07 6/14/2007
773-953 T-Mobile USA Chicago Zone 03 8/29/2007
773-954 T-Mobile USA Chicago Zone 10 9/30/2005
773-955 Illinois Bell Tel Co Chicago Zone 07 N/A
773-956 T-Mobile USA Chicago Zone 06 9/4/2008
773-957 Paetec Itel Chicago Zone 03 N/A
773-960 T-Mobile USA Chicago Zone 03 N/A
773-961 Illinois Bell Tel Co Chicago Zone 02 N/A
773-962 Illinois Bell Tel Co Chicago Zone 07 N/A
773-963 T-Mobile USA Chicago Zone 03 7/17/2007
773-964 T-Mobile USA Chicago Zone 10 8/21/2007
773-965 Cellco Partnership Chicago Zone 01 N/A
773-966 Level 3 Communications Chicago Zone 07 4/27/2006
773-967 MCIMetro Access Transmission Services Chicago Zone 09 N/A
773-968 T-Mobile USA Chicago Zone 03 2/12/2001
773-969 T-Mobile USA Chicago Zone 04 1/7/2008
773-970 New Cingular Wireless PCS Chicago Zone 10 5/15/2009
773-971 T-Mobile USA Chicago Zone 10 7/11/2007
773-972 New Cingular Wireless PCS Chicago Zone 01 N/A
773-973 Illinois Bell Tel Co Chicago Zone 02 N/A
773-974 Paetec Itel Chicago Zone 11 N/A
773-975 Illinois Bell Tel Co Chicago Zone 04 N/A
773-977 Paetec Itel Chicago Zone 02 N/A
773-978 Illinois Bell Tel Co Chicago Zone 09 N/A
773-979 T-Mobile USA Chicago Zone 10 6/8/2006
773-980 Illinois Bell Tel Co Chicago Zone 10 5/15/2008
773-981 MCIMetro Access Transmission Services Chicago Zone 10 N/A
773-982 T-Mobile USA Chicago Zone 10 2/29/2008
773-983 T-Mobile USA Chicago Zone 10 3/28/2002
773-984 T-Mobile USA Chicago Zone 03 3/15/2007
773-985 MCIMetro Access Transmission Services Chicago Zone 11 N/A
773-986 T-Mobile USA Chicago Zone 08 10/16/2007
773-987 First Communications Chicago Zone 10 3/28/2005
773-988 T-Mobile USA Chicago Zone 01 N/A
773-989 Illinois Bell Tel Co Chicago Zone 02 N/A
773-990 Illinois Bell Tel Co Chicago Zone 03 3/20/2006
773-991 T-Mobile USA Chicago Zone 03 N/A
773-992 Illinois Bell Tel Co Chicago Zone 03 N/A
773-993 T-Mobile USA Chicago Zone 03 2/18/2011
773-994 Illinois Bell Tel Co Chicago Zone 07 N/A
773-995 Illinois Bell Tel Co Chicago Zone 10 N/A
773-996 T-Mobile USA Chicago Zone 08 10/16/2007
773-997 T-Mobile USA Chicago Zone 02 10/28/2008
773-998 New Cingular Wireless PCS Chicago Zone 10 5/15/2009
773-999 New Cingular Wireless PCS Chicago Zone 05 5/15/2009
  1. NPA-NXX assigned carrier; with Number Pooling thousand block numbers are often assigned to other carriers as well; moreover, phone numbers can be ported between service providers
  2. For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
  3. Assignment date. N/A - mostly central office codes assigned before 2001.
  4. NXX prefixes last updated: November 22, 2025

Cities in area code 773

City1 County Time Zone1
Chicago Cook C
  1. Listed above are most places served by USA area code 773. When multiple places in a US state share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. C stands for Central Time (currently ).
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