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

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Area Code 773

Area code 773 is in Illinois, USA , serving the city of Chicago; it currently uses 785 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
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  • 618
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  • 708
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  • 779
  • 815
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  • 872

Locate any 773-NXX prefix:

773-200-XXXX --- 773-299-XXXX
NPANXX Area served[1] Provider[2] Date[3]
773-200 Chicago Zone 02 Multiple 05/18/2023
773-201 Chicago Zone 01 USA Mobility Wireless N/A
773-202 Chicago Zone 03 Multiple N/A
773-203 Chicago Zone 01 New Cingular Wireless PCS N/A
773-204 Chicago Zone 01 Multiple N/A
773-205 Chicago Zone 03 Multiple N/A
773-206 Chicago Zone 01 New Cingular Wireless PCS N/A
773-207 Chicago Zone 10 Multiple 8/7/2019
773-208 Chicago Zone 01 New Cingular Wireless PCS N/A
773-209 Chicago Zone 03 T-Mobile USA N/A
773-210 Chicago Zone 01 Illinois Bell Tel Co N/A
773-212 Chicago Zone 03 USA Mobility Wireless N/A
773-213 Chicago Zone 01 New Cingular Wireless PCS N/A
773-214 Chicago Zone 01 USA Mobility Wireless N/A
773-215 Chicago Zone 01 USA Mobility Wireless N/A
773-216 Chicago Zone 01 T-Mobile USA N/A
773-217 Chicago Zone 09 Multiple 5/19/2009
773-218 Chicago Zone 01 New Cingular Wireless PCS N/A
773-219 Chicago Zone 07 Multiple N/A
773-220 Chicago Zone 03 T-Mobile USA N/A
773-221 Chicago Zone 09 Illinois Bell Tel Co N/A
773-222 Chicago Zone 01 USA Mobility Wireless N/A
773-223 Chicago Zone 06 USA Mobility Wireless N/A
773-224 Chicago Zone 07 Illinois Bell Tel Co N/A
773-225 Chicago Zone 03 Multiple 3/15/2006
773-226 Chicago Zone 10 Multiple 11/27/2007
773-227 Chicago Zone 04 Illinois Bell Tel Co N/A
773-228 Chicago Zone 01 USA Mobility Wireless N/A
773-229 Chicago Zone 08 Illinois Bell Tel Co N/A
773-230 Chicago Zone 03 New Cingular Wireless PCS N/A
773-231 Chicago Zone 07 Multiple 9/8/2011
773-232 Chicago Zone 10 Onvoy 2/5/2020
773-233 Chicago Zone 10 Illinois Bell Tel Co N/A
773-234 Chicago Zone 06 Bandwidth.com Clec 6/26/2009
773-235 Chicago Zone 04 Illinois Bell Tel Co N/A
773-236 Chicago Zone 07 Multiple 6/26/2009
773-237 Chicago Zone 05 Illinois Bell Tel Co N/A
773-238 Chicago Zone 10 Illinois Bell Tel Co N/A
773-239 Chicago Zone 10 Illinois Bell Tel Co N/A
773-240 Chicago Zone 10 T-Mobile USA 10/16/2007
773-241 Chicago Zone 07 Multiple N/A
773-242 Chicago Zone 06 Multiple N/A
773-243 Chicago Zone 03 Multiple N/A
773-244 Chicago Zone 04 Illinois Bell Tel Co N/A
773-245 Chicago Zone 08 Multiple 6/16/2010
773-246 Chicago Zone 04 Indiana Paging Network N/A
773-247 Chicago Zone 06 Illinois Bell Tel Co N/A
773-248 Chicago Zone 04 Illinois Bell Tel Co N/A
773-249 Chicago Zone 11 Multiple N/A
773-250 Chicago Zone 02 Multiple N/A
773-251 Chicago Zone 03 New Cingular Wireless PCS N/A
773-252 Chicago Zone 04 Illinois Bell Tel Co N/A
773-253 Chicago Zone 10 Multiple N/A
773-254 Chicago Zone 06 Illinois Bell Tel Co N/A
773-255 Chicago Zone 03 New Cingular Wireless PCS N/A
773-256 Chicago Zone 07 Multiple N/A
773-257 Chicago Zone 06 Multiple N/A
773-258 Chicago Zone 01 USA Mobility Wireless N/A
773-259 Chicago Zone 01 New Cingular Wireless PCS N/A
773-260 Chicago Zone 10 Multiple N/A
773-261 Chicago Zone 05 Multiple N/A
773-262 Chicago Zone 02 Illinois Bell Tel Co N/A
773-263 Chicago Zone 03 T-Mobile USA N/A
773-264 Chicago Zone 10 Illinois Bell Tel Co N/A
773-265 Chicago Zone 06 Illinois Bell Tel Co N/A
773-266 Chicago Zone 01 New Cingular Wireless PCS N/A
773-267 Chicago Zone 02 Illinois Bell Tel Co N/A
773-268 Chicago Zone 07 Illinois Bell Tel Co N/A
773-269 Chicago Zone 04 Multiple N/A
773-270 Chicago Zone 04 Multiple 6/4/2009
773-271 Chicago Zone 02 Illinois Bell Tel Co N/A
773-272 Chicago Zone 03 Multiple N/A
773-273 Chicago Zone 02 Multiple N/A
773-274 Chicago Zone 02 Illinois Bell Tel Co N/A
773-275 Chicago Zone 02 Illinois Bell Tel Co N/A
773-276 Chicago Zone 04 Illinois Bell Tel Co N/A
773-277 Chicago Zone 06 Multiple N/A
773-278 Chicago Zone 04 Illinois Bell Tel Co N/A
773-279 Chicago Zone 02 Multiple N/A
773-280 Chicago Zone 06 Multiple N/A
773-281 Chicago Zone 04 Illinois Bell Tel Co N/A
773-282 Chicago Zone 03 Illinois Bell Tel Co N/A
773-283 Chicago Zone 03 Illinois Bell Tel Co N/A
773-284 Chicago Zone 08 Illinois Bell Tel Co N/A
773-285 Chicago Zone 07 Multiple N/A
773-286 Chicago Zone 03 Illinois Bell Tel Co N/A
773-287 Chicago Zone 05 Illinois Bell Tel Co N/A
773-288 Chicago Zone 07 Multiple N/A
773-289 Chicago Zone 04 Multiple N/A
773-290 Chicago Zone 02 Multiple N/A
773-291 Chicago Zone 10 Illinois Bell Tel Co N/A
773-292 Chicago Zone 04 Illinois Bell Tel Co N/A
773-293 Chicago Zone 02 Multiple N/A
773-294 Chicago Zone 03 New Cingular Wireless PCS N/A
773-295 Chicago Zone 05 Multiple N/A
773-296 Chicago Zone 04 Illinois Bell Tel Co N/A
773-297 Chicago Zone 03 T-Mobile USA N/A
773-298 Chicago Zone 10 Illinois Bell Tel Co N/A
773-299 Chicago Zone 06 Multiple N/A
773-300-XXXX --- 773-399-XXXX
NPANXX Area served[1] Provider[2] Date[3]
773-300 Chicago Zone 05 Multiple 06/15/2023
773-301 Chicago Zone 03 T-Mobile USA N/A
773-302 Chicago Zone 02 Multiple 2/26/2009
773-303 Chicago Zone 02 Multiple N/A
773-304 Chicago Zone 03 Multiple N/A
773-305 Chicago Zone 04 Multiple N/A
773-306 Chicago Zone 08 Multiple N/A
773-307 Chicago Zone 01 New Cingular Wireless PCS N/A
773-308 Chicago Zone 03 Multiple N/A
773-309 Chicago Zone 05 Multiple N/A
773-310 Chicago Zone 10 Multiple 3/22/2004
773-312 Chicago Zone 02 Multiple N/A
773-313 Chicago Zone 02 Multiple N/A
773-314 Chicago Zone 03 Multiple N/A
773-315 Chicago Zone 01 New Cingular Wireless PCS N/A
773-316 Chicago Zone 01 New Cingular Wireless PCS N/A
773-317 Chicago Zone 01 T-Mobile USA N/A
773-318 Chicago Zone 03 Cellco Partnership 9/7/2004
773-319 Chicago Zone 10 T-Mobile USA N/A
773-320 Chicago Zone 01 New Cingular Wireless PCS N/A
773-321 Chicago Zone 06 Multiple N/A
773-322 Chicago Zone 07 Multiple N/A
773-323 Chicago Zone 02 American Messaging Services 4/16/2001
773-324 Chicago Zone 07 Illinois Bell Tel Co N/A
773-325 Chicago Zone 04 Illinois Bell Tel Co N/A
773-326 Chicago Zone 07 Multiple N/A
773-327 Chicago Zone 04 Illinois Bell Tel Co N/A
773-328 Chicago Zone 04 Multiple N/A
773-329 Chicago Zone 03 Multiple N/A
773-330 Chicago Zone 01 New Cingular Wireless PCS N/A
773-331 Chicago Zone 03 Multiple N/A
773-332 Chicago Zone 03 Multiple N/A
773-333 Chicago Zone 02 American Messaging Services 4/16/2001
773-334 Chicago Zone 02 Illinois Bell Tel Co N/A
773-335 Chicago Zone 01 Multiple N/A
773-336 Chicago Zone 09 Multiple N/A
773-337 Chicago Zone 11 Multiple N/A
773-338 Chicago Zone 02 Illinois Bell Tel Co N/A
773-339 Chicago Zone 01 Cellco Partnership N/A
773-340 Chicago Zone 08 Multiple N/A
773-341 Chicago Zone 10 Multiple N/A
773-342 Chicago Zone 04 Illinois Bell Tel Co N/A
773-343 Chicago Zone 01 Cellco Partnership N/A
773-344 Chicago Zone 10 Multiple N/A
773-345 Chicago Zone 05 Multiple N/A
773-346 Chicago Zone 06 Multiple N/A
773-347 Chicago Zone 07 Multiple N/A
773-348 Chicago Zone 04 Illinois Bell Tel Co N/A
773-349 Chicago Zone 08 Multiple N/A
773-350 Chicago Zone 01 Cellco Partnership N/A
773-351 Chicago Zone 01 New Cingular Wireless PCS N/A
773-352 Chicago Zone 03 Onvoy 7/1/2021
773-353 Chicago Zone 03 Multiple N/A
773-354 Chicago Zone 01 T-Mobile USA N/A
773-355 Chicago Zone 03 Multiple 4/12/2001
773-356 Chicago Zone 09 Illinois Bell Tel Co N/A
773-357 Chicago Zone 11 Multiple N/A
773-358 Chicago Zone 07 Multiple N/A
773-359 Chicago Zone 09 Multiple N/A
773-360 Chicago Zone 04 Multiple N/A
773-361 Chicago Zone 07 Illinois Bell Tel Co N/A
773-362 Chicago Zone 08 Multiple N/A
773-363 Chicago Zone 07 Illinois Bell Tel Co N/A
773-364 Chicago Zone 09 Multiple 4/12/2001
773-365 Chicago Zone 04 Multiple N/A
773-366 Chicago Zone 10 Multiple 9/24/2004
773-367 Chicago Zone 03 Multiple 2/13/2009
773-368 Chicago Zone 03 T-Mobile USA N/A
773-369 Chicago Zone 01 New Cingular Wireless PCS N/A
773-370 Chicago Zone 01 T-Mobile USA N/A
773-371 Chicago Zone 07 Multiple N/A
773-372 Chicago Zone 03 Multiple 7/7/2008
773-373 Chicago Zone 07 Multiple N/A
773-374 Chicago Zone 09 Illinois Bell Tel Co N/A
773-375 Chicago Zone 09 Illinois Bell Tel Co N/A
773-376 Chicago Zone 06 Illinois Bell Tel Co N/A
773-377 Chicago Zone 11 Multiple N/A
773-378 Chicago Zone 05 Multiple N/A
773-379 Chicago Zone 05 Multiple N/A
773-380 Chicago Zone 03 Multiple N/A
773-381 Chicago Zone 02 Illinois Bell Tel Co N/A
773-382 Chicago Zone 09 Multiple 4/12/2001
773-383 Chicago Zone 03 New Cingular Wireless PCS N/A
773-384 Chicago Zone 04 Illinois Bell Tel Co N/A
773-385 Chicago Zone 05 Illinois Bell Tel Co N/A
773-386 Chicago Zone 01 T-Mobile USA N/A
773-387 Chicago Zone 10 T-Mobile USA 6/9/2004
773-388 Chicago Zone 04 Illinois Bell Tel Co N/A
773-389 Chicago Zone 09 Multiple N/A
773-390 Chicago Zone 01 Cellco Partnership N/A
773-391 Chicago Zone 01 New Cingular Wireless PCS N/A
773-392 Chicago Zone 01 T-Mobile USA N/A
773-393 Chicago Zone 01 USA Mobility Wireless N/A
773-394 Chicago Zone 04 Multiple N/A
773-395 Chicago Zone 04 Multiple N/A
773-396 Chicago Zone 10 Multiple 4/12/2001
773-397 Chicago Zone 03 New Cingular Wireless PCS 3/10/2009
773-398 Chicago Zone 03 T-Mobile USA N/A
773-399 Chicago Zone 03 Multiple N/A
773-400-XXXX --- 773-499-XXXX
NPANXX Area served[1] Provider[2] Date[3]
773-400 Chicago Zone 02 American Messaging Services 4/16/2001
773-401 Chicago Zone 01 New Cingular Wireless PCS N/A
773-402 Chicago Zone 01 New Cingular Wireless PCS N/A
773-403 Chicago Zone 03 Multiple N/A
773-404 Chicago Zone 04 Illinois Bell Tel Co N/A
773-405 Chicago Zone 01 Cellco Partnership N/A
773-406 Chicago Zone 07 Multiple N/A
773-407 Chicago Zone 03 T-Mobile USA N/A
773-408 Chicago Zone 06 Multiple 2/13/2009
773-409 Chicago Zone 02 Multiple N/A
773-410 Chicago Zone 02 Multiple N/A
773-412 Chicago Zone 03 T-Mobile USA N/A
773-413 Chicago Zone 05 Multiple N/A
773-414 Chicago Zone 03 Multiple 9/7/2004
773-415 Chicago Zone 01 Cellco Partnership N/A
773-416 Chicago Zone 01 T-Mobile USA N/A
773-417 Chicago Zone 05 Multiple N/A
773-418 Chicago Zone 03 T-Mobile USA N/A
773-419 Chicago Zone 01 T-Mobile USA N/A
773-420 Chicago Zone 07 Multiple N/A
773-421 Chicago Zone 01 Cellco Partnership N/A
773-422 Chicago Zone 01 Cellco Partnership N/A
773-423 Chicago Zone 02 Multiple N/A
773-424 Chicago Zone 08 Multiple N/A
773-425 Chicago Zone 03 T-Mobile USA N/A
773-426 Chicago Zone 03 T-Mobile USA 1/4/2002
773-427 Chicago Zone 03 Multiple N/A
773-428 Chicago Zone 01 New Cingular Wireless PCS N/A
773-429 Chicago Zone 10 Illinois Bell Tel Co N/A
773-430 Chicago Zone 03 T-Mobile USA N/A
773-431 Chicago Zone 03 New Cingular Wireless PCS 11/5/2008
773-432 Chicago Zone 08 Multiple N/A
773-433 Chicago Zone 02 Multiple N/A
773-434 Chicago Zone 08 Illinois Bell Tel Co N/A
773-435 Chicago Zone 04 Multiple N/A
773-436 Chicago Zone 08 Illinois Bell Tel Co N/A
773-437 Chicago Zone 09 Multiple N/A
773-438 Chicago Zone 01 USA Mobility Wireless N/A
773-439 Chicago Zone 03 Multiple N/A
773-440 Chicago Zone 10 Multiple N/A
773-441 Chicago Zone 03 New Cingular Wireless PCS 8/21/2008
773-442 Chicago Zone 02 Multiple N/A
773-443 Chicago Zone 01 T-Mobile USA N/A
773-444 Chicago Zone 03 Multiple N/A
773-445 Chicago Zone 10 Illinois Bell Tel Co N/A
773-446 Chicago Zone 06 Multiple N/A
773-447 Chicago Zone 01 T-Mobile USA N/A
773-448 Chicago Zone 07 Multiple 10/15/2025
773-449 Chicago Zone 09 Multiple N/A
773-450 Chicago Zone 01 New Cingular Wireless PCS N/A
773-451 Chicago Zone 07 Multiple N/A
773-452 Chicago Zone 01 Cellco Partnership N/A
773-453 Chicago Zone 11 Multiple N/A
773-454 Chicago Zone 03 T-Mobile USA N/A
773-455 Chicago Zone 11 Multiple N/A
773-456 Chicago Zone 03 New Cingular Wireless PCS N/A
773-457 Chicago Zone 07 Multiple N/A
773-458 Chicago Zone 03 Multiple N/A
773-459 Chicago Zone 01 T-Mobile USA N/A
773-461 Chicago Zone 01 Multiple N/A
773-462 Chicago Zone 11 Illinois Bell Tel Co N/A
773-463 Chicago Zone 02 Illinois Bell Tel Co N/A
773-464 Chicago Zone 01 USA Mobility Wireless N/A
773-465 Chicago Zone 02 Illinois Bell Tel Co N/A
773-466 Chicago Zone 05 Multiple N/A
773-467 Chicago Zone 03 Multiple N/A
773-468 Chicago Zone 10 Illinois Bell Tel Co N/A
773-469 Chicago Zone 01 T-Mobile USA N/A
773-470 Chicago Zone 08 Multiple N/A
773-471 Chicago Zone 08 Illinois Bell Tel Co N/A
773-472 Chicago Zone 04 Illinois Bell Tel Co N/A
773-473 Chicago Zone 05 Illinois Bell Tel Co N/A
773-474 Chicago Zone 10 Multiple 4/12/2001
773-475 Chicago Zone 06 Multiple N/A
773-476 Chicago Zone 08 Illinois Bell Tel Co N/A
773-477 Chicago Zone 04 Illinois Bell Tel Co N/A
773-478 Chicago Zone 02 Illinois Bell Tel Co N/A
773-479 Chicago Zone 05 Illinois Bell Tel Co N/A
773-480 Chicago Zone 01 New Cingular Wireless PCS N/A
773-481 Chicago Zone 03 Illinois Bell Tel Co N/A
773-482 Chicago Zone 11 Multiple 4/12/2001
773-483 Chicago Zone 07 Multiple N/A
773-484 Chicago Zone 07 Multiple N/A
773-485 Chicago Zone 01 Cellco Partnership N/A
773-486 Chicago Zone 04 Illinois Bell Tel Co N/A
773-487 Chicago Zone 07 Multiple N/A
773-488 Chicago Zone 07 Illinois Bell Tel Co N/A
773-489 Chicago Zone 04 Illinois Bell Tel Co N/A
773-490 Chicago Zone 03 New Cingular Wireless PCS N/A
773-491 Chicago Zone 03 T-Mobile USA N/A
773-492 Chicago Zone 08 Multiple 8/23/2011
773-493 Chicago Zone 07 Multiple N/A
773-494 Chicago Zone 03 Multiple 10/13/2004
773-495 Chicago Zone 01 T-Mobile USA N/A
773-496 Chicago Zone 07 Multiple 4/12/2001
773-497 Chicago Zone 01 Cellco Partnership N/A
773-498 Chicago Zone 08 Multiple N/A
773-499 Chicago Zone 03 Multiple 9/28/2004
773-500-XXXX --- 773-599-XXXX
NPANXX Area served[1] Provider[2] Date[3]
773-500 Chicago Zone 10 Multiple 06/15/2023
773-501 Chicago Zone 03 T-Mobile USA 2/12/2001
773-502 Chicago Zone 01 Cellco Partnership N/A
773-503 Chicago Zone 10 Multiple 11/17/2004
773-504 Chicago Zone 01 New Cingular Wireless PCS N/A
773-505 Chicago Zone 01 Cellco Partnership N/A
773-506 Chicago Zone 02 Illinois Bell Tel Co N/A
773-507 Chicago Zone 03 T-Mobile USA 2/14/2001
773-508 Chicago Zone 02 Illinois Bell Tel Co N/A
773-509 Chicago Zone 02 Illinois Bell Tel Co N/A
773-510 Chicago Zone 03 T-Mobile USA 4/4/2002
773-512 Chicago Zone 03 T-Mobile USA 10/13/2004
773-513 Chicago Zone 01 New Cingular Wireless PCS N/A
773-514 Chicago Zone 02 Multiple 4/16/2001
773-515 Chicago Zone 01 Cellco Partnership N/A
773-516 Chicago Zone 02 Multiple N/A
773-517 Chicago Zone 01 T-Mobile USA N/A
773-518 Chicago Zone 01 Cellco Partnership N/A
773-519 Chicago Zone 01 Cellco Partnership N/A
773-520 Chicago Zone 01 Cellco Partnership N/A
773-521 Chicago Zone 06 Multiple N/A
773-522 Chicago Zone 06 Illinois Bell Tel Co N/A
773-523 Chicago Zone 06 Illinois Bell Tel Co N/A
773-524 Chicago Zone 04 Multiple N/A
773-525 Chicago Zone 04 Illinois Bell Tel Co N/A
773-526 Chicago Zone 08 Multiple 4/12/2001
773-527 Chicago Zone 03 Multiple N/A
773-528 Chicago Zone 04 Illinois Bell Tel Co N/A
773-529 Chicago Zone 04 Illinois Bell Tel Co N/A
773-530 Chicago Zone 09 Multiple 12/30/2004
773-531 Chicago Zone 03 T-Mobile USA N/A
773-532 Chicago Zone 01 New Cingular Wireless PCS N/A
773-533 Chicago Zone 06 Illinois Bell Tel Co N/A
773-534 Chicago Zone 06 Illinois Bell Tel Co N/A
773-535 Chicago Zone 06 Illinois Bell Tel Co N/A
773-536 Chicago Zone 07 Multiple N/A
773-537 Chicago Zone 04 Multiple 5/24/2004
773-538 Chicago Zone 07 Multiple N/A
773-539 Chicago Zone 02 Illinois Bell Tel Co N/A
773-540 Chicago Zone 03 T-Mobile USA 12/28/2004
773-541 Chicago Zone 02 Multiple N/A
773-542 Chicago Zone 06 Multiple N/A
773-543 Chicago Zone 04 T-Mobile USA 10/26/2007
773-544 Chicago Zone 01 T-Mobile USA N/A
773-545 Chicago Zone 03 Illinois Bell Tel Co N/A
773-546 Chicago Zone 10 Multiple N/A
773-547 Chicago Zone 01 New Cingular Wireless PCS N/A
773-548 Chicago Zone 07 Multiple N/A
773-549 Chicago Zone 04 Illinois Bell Tel Co N/A
773-550 Chicago Zone 01 Cellco Partnership N/A
773-551 Chicago Zone 03 New Cingular Wireless PCS N/A
773-552 Chicago Zone 01 T-Mobile USA N/A
773-553 Chicago Zone 06 Multiple N/A
773-554 Chicago Zone 03 Multiple 7/1/2009
773-556 Chicago Zone 03 Multiple N/A
773-557 Chicago Zone 03 Multiple N/A
773-558 Chicago Zone 03 Multiple 1/15/2007
773-559 Chicago Zone 03 T-Mobile USA 1/10/2005
773-560 Chicago Zone 01 Multiple N/A
773-561 Chicago Zone 02 Illinois Bell Tel Co N/A
773-562 Chicago Zone 03 T-Mobile USA N/A
773-563 Chicago Zone 10 Multiple 10/19/2005
773-564 Chicago Zone 02 Multiple N/A
773-565 Chicago Zone 06 Multiple 5/21/2004
773-566 Chicago Zone 01 USA Mobility Wireless N/A
773-567 Chicago Zone 03 Multiple 4/22/2005
773-568 Chicago Zone 10 Illinois Bell Tel Co N/A
773-569 Chicago Zone 03 Multiple N/A
773-570 Chicago Zone 11 Multiple N/A
773-571 Chicago Zone 07 Cellco Partnership 2/20/2007
773-572 Chicago Zone 04 Multiple N/A
773-573 Chicago Zone 07 Multiple N/A
773-574 Chicago Zone 10 T-Mobile USA 3/21/2006
773-575 Chicago Zone 03 New Cingular Wireless PCS N/A
773-576 Chicago Zone 01 New Cingular Wireless PCS N/A
773-577 Chicago Zone 03 Multiple 4/12/2001
773-578 Chicago Zone 01 New Cingular Wireless PCS N/A
773-579 Chicago Zone 06 Illinois Bell Tel Co N/A
773-580 Chicago Zone 03 New Cingular Wireless PCS N/A
773-581 Chicago Zone 08 Illinois Bell Tel Co N/A
773-582 Chicago Zone 08 Illinois Bell Tel Co N/A
773-583 Chicago Zone 02 Illinois Bell Tel Co N/A
773-584 Chicago Zone 06 Multiple N/A
773-585 Chicago Zone 08 Illinois Bell Tel Co N/A
773-586 Chicago Zone 08 Illinois Bell Tel Co N/A
773-587 Chicago Zone 03 Multiple 1/8/2007
773-588 Chicago Zone 02 Illinois Bell Tel Co N/A
773-589 Chicago Zone 05 Multiple N/A
773-590 Chicago Zone 01 Cellco Partnership N/A
773-591 Chicago Zone 01 Illinois Bell Tel Co N/A
773-592 Chicago Zone 03 T-Mobile USA N/A
773-593 Chicago Zone 01 T-Mobile USA N/A
773-594 Chicago Zone 03 Illinois Bell Tel Co N/A
773-595 Chicago Zone 07 Multiple 10/30/2006
773-596 Chicago Zone 02 Multiple 4/12/2001
773-597 Chicago Zone 07 Multiple 1/21/2005
773-598 Chicago Zone 04 Multiple N/A
773-599 Chicago Zone 08 Multiple N/A
773-600-XXXX --- 773-699-XXXX
NPANXX Area served[1] Provider[2] Date[3]
773-600 Chicago Zone 10 T-Mobile USA 7/20/2004
773-601 Chicago Zone 11 Illinois Bell Tel Co N/A
773-602 Chicago Zone 07 Multiple N/A
773-603 Chicago Zone 10 T-Mobile USA 6/30/2005
773-604 Chicago Zone 02 Illinois Bell Tel Co N/A
773-605 Chicago Zone 02 First Communications 4/5/2006
773-606 Chicago Zone 03 T-Mobile USA 7/14/2005
773-607 Chicago Zone 01 New Cingular Wireless PCS N/A
773-608 Chicago Zone 01 New Cingular Wireless PCS N/A
773-609 Chicago Zone 10 Multiple N/A
773-610 Chicago Zone 03 New Cingular Wireless PCS 10/17/2001
773-612 Chicago Zone 01 New Cingular Wireless PCS N/A
773-613 Chicago Zone 01 New Cingular Wireless PCS N/A
773-614 Chicago Zone 10 Multiple 11/8/2006
773-615 Chicago Zone 10 Multiple 11/30/2001
773-616 Chicago Zone 01 T-Mobile USA N/A
773-617 Chicago Zone 01 T-Mobile USA N/A
773-618 Chicago Zone 01 New Cingular Wireless PCS N/A
773-619 Chicago Zone 03 T-Mobile USA 3/9/2001
773-620 Chicago Zone 03 New Cingular Wireless PCS N/A
773-621 Chicago Zone 03 T-Mobile USA 10/10/2005
773-622 Chicago Zone 05 Illinois Bell Tel Co N/A
773-623 Chicago Zone 01 New Cingular Wireless PCS N/A
773-624 Chicago Zone 07 Illinois Bell Tel Co N/A
773-625 Chicago Zone 05 Illinois Bell Tel Co N/A
773-626 Chicago Zone 05 Illinois Bell Tel Co N/A
773-627 Chicago Zone 08 Multiple 4/12/2001
773-628 Chicago Zone 03 Multiple N/A
773-629 Chicago Zone 10 Multiple 11/8/2006
773-630 Chicago Zone 03 New Cingular Wireless PCS 3/10/2009
773-631 Chicago Zone 03 Illinois Bell Tel Co N/A
773-632 Chicago Zone 03 Multiple N/A
773-633 Chicago Zone 07 Multiple N/A
773-634 Chicago Zone 04 Multiple N/A
773-635 Chicago Zone 06 Multiple N/A
773-636 Chicago Zone 01 Cellco Partnership N/A
773-637 Chicago Zone 05 Illinois Bell Tel Co N/A
773-638 Chicago Zone 06 Multiple N/A
773-639 Chicago Zone 03 Multiple 10/17/2007
773-640 Chicago Zone 06 Multiple 4/12/2001
773-641 Chicago Zone 03 T-Mobile USA 9/13/2005
773-642 Chicago Zone 03 Multiple 3/15/2007
773-643 Chicago Zone 07 Multiple N/A
773-644 Chicago Zone 02 Multiple 1/5/2011
773-645 Chicago Zone 04 Multiple N/A
773-646 Chicago Zone 09 Illinois Bell Tel Co N/A
773-647 Chicago Zone 03 Multiple 10/17/2007
773-648 Chicago Zone 06 Multiple 4/12/2001
773-649 Chicago Zone 02 Multiple 4/12/2001
773-650 Chicago Zone 06 Illinois Bell Tel Co N/A
773-651 Chicago Zone 07 Illinois Bell Tel Co N/A
773-652 Chicago Zone 01 USA Mobility Wireless N/A
773-653 Chicago Zone 03 Multiple N/A
773-654 Chicago Zone 02 Multiple 4/12/2001
773-655 Chicago Zone 03 T-Mobile USA 3/27/2002
773-656 Chicago Zone 10 T-Mobile USA 6/30/2005
773-657 Chicago Zone 03 Multiple 3/5/2007
773-658 Chicago Zone 05 Multiple N/A
773-659 Chicago Zone 01 New Cingular Wireless PCS N/A
773-660 Chicago Zone 10 Illinois Bell Tel Co N/A
773-661 Chicago Zone 04 Multiple 4/12/2001
773-662 Chicago Zone 01 Cellco Partnership N/A
773-663 Chicago Zone 03 Multiple N/A
773-664 Chicago Zone 05 Multiple 4/12/2001
773-665 Chicago Zone 04 Illinois Bell Tel Co N/A
773-666 Chicago Zone 04 Multiple 5/20/2011
773-667 Chicago Zone 07 Multiple N/A
773-668 Chicago Zone 05 Multiple 4/27/2006
773-669 Chicago Zone 05 Multiple 6/8/2009
773-670 Chicago Zone 10 Multiple 09/03/2024
773-671 Chicago Zone 01 T-Mobile USA N/A
773-672 Chicago Zone 10 Multiple 2/29/2008
773-673 Chicago Zone 05 Multiple 4/12/2001
773-674 Chicago Zone 06 Illinois Bell Tel Co 5/15/2008
773-675 Chicago Zone 07 Multiple 7/7/2008
773-676 Chicago Zone 05 Multiple N/A
773-677 Chicago Zone 03 New Cingular Wireless PCS 3/7/2002
773-678 Chicago Zone 03 T-Mobile USA 2/21/2005
773-679 Chicago Zone 10 T-Mobile USA 7/26/2006
773-680 Chicago Zone 03 New Cingular Wireless PCS 2/2/2001
773-681 Chicago Zone 02 Multiple N/A
773-682 Chicago Zone 03 Cellco Partnership 10/17/2005
773-683 Chicago Zone 03 Multiple 1/23/2008
773-684 Chicago Zone 07 Multiple N/A
773-685 Chicago Zone 03 Illinois Bell Tel Co N/A
773-686 Chicago Zone 11 Illinois Bell Tel Co N/A
773-687 Chicago Zone 04 Multiple N/A
773-688 Chicago Zone 05 Multiple 7/27/2004
773-689 Chicago Zone 01 Cellco Partnership N/A
773-690 Chicago Zone 07 Multiple 11/5/2008
773-691 Chicago Zone 08 T-Mobile USA 7/10/2007
773-692 Chicago Zone 04 Onvoy 1/31/2019
773-693 Chicago Zone 03 Multiple N/A
773-694 Chicago Zone 11 Multiple N/A
773-695 Chicago Zone 03 Multiple N/A
773-696 Chicago Zone 06 Multiple N/A
773-697 Chicago Zone 04 Multiple 4/12/2001
773-698 Chicago Zone 04 Multiple 6/13/2007
773-699 Chicago Zone 03 Multiple 4/19/2005
773-701-XXXX --- 773-799-XXXX
NPANXX Area served[1] Provider[2] Date[3]
773-701 Chicago Zone 10 Multiple 9/30/2005
773-702 Chicago Zone 07 Illinois Bell Tel Co N/A
773-703 Chicago Zone 10 New Cingular Wireless PCS 9/2/2008
773-704 Chicago Zone 03 T-Mobile USA 1/23/2002
773-705 Chicago Zone 04 Multiple 08/28/2024
773-706 Chicago Zone 03 Cellco Partnership 7/18/2005
773-707 Chicago Zone 10 New Cingular Wireless PCS 11/5/2008
773-708 Chicago Zone 10 New Cingular Wireless PCS 11/5/2008
773-709 Chicago Zone 03 New Cingular Wireless PCS 11/5/2008
773-710 Chicago Zone 03 New Cingular Wireless PCS 4/16/2001
773-712 Chicago Zone 03 New Cingular Wireless PCS 11/5/2008
773-713 Chicago Zone 02 American Messaging Services N/A
773-714 Chicago Zone 03 Illinois Bell Tel Co N/A
773-715 Chicago Zone 06 T-Mobile USA 10/16/2002
773-716 Chicago Zone 01 Multiple N/A
773-717 Chicago Zone 07 Multiple 9/16/2008
773-718 Chicago Zone 01 Cellco Partnership N/A
773-719 Chicago Zone 01 T-Mobile USA N/A
773-720 Chicago Zone 01 Cellco Partnership N/A
773-721 Chicago Zone 09 Illinois Bell Tel Co N/A
773-722 Chicago Zone 06 Illinois Bell Tel Co N/A
773-723 Chicago Zone 07 Illinois Bell Tel Co N/A
773-724 Chicago Zone 03 Multiple 10/17/2005
773-725 Chicago Zone 03 Illinois Bell Tel Co N/A
773-726 Chicago Zone 07 Multiple 4/12/2001
773-727 Chicago Zone 10 T-Mobile USA 10/16/2002
773-728 Chicago Zone 02 Illinois Bell Tel Co N/A
773-729 Chicago Zone 07 Multiple 4/12/2001
773-730 Chicago Zone 02 Illinois Bell Tel Co N/A
773-731 Chicago Zone 09 Illinois Bell Tel Co N/A
773-732 Chicago Zone 03 T-Mobile USA N/A
773-733 Chicago Zone 06 Multiple 4/12/2001
773-734 Chicago Zone 09 Illinois Bell Tel Co N/A
773-735 Chicago Zone 08 Illinois Bell Tel Co N/A
773-736 Chicago Zone 03 Illinois Bell Tel Co N/A
773-737 Chicago Zone 08 Illinois Bell Tel Co N/A
773-738 Chicago Zone 03 Multiple 8/29/2007
773-739 Chicago Zone 02 Multiple N/A
773-740 Chicago Zone 02 Multiple 4/16/2001
773-741 Chicago Zone 11 Multiple N/A
773-742 Chicago Zone 03 T-Mobile USA 11/5/2001
773-743 Chicago Zone 02 Illinois Bell Tel Co N/A
773-744 Chicago Zone 06 T-Mobile USA 8/30/2001
773-745 Chicago Zone 05 Illinois Bell Tel Co N/A
773-746 Chicago Zone 03 T-Mobile USA N/A
773-747 Chicago Zone 04 Multiple 1/7/2008
773-748 Chicago Zone 10 Indiana Paging Network N/A
773-749 Chicago Zone 03 Multiple 6/19/2007
773-750 Chicago Zone 03 New Cingular Wireless PCS 9/13/2001
773-751 Chicago Zone 02 Multiple N/A
773-752 Chicago Zone 07 Illinois Bell Tel Co N/A
773-753 Chicago Zone 07 Illinois Bell Tel Co N/A
773-754 Chicago Zone 02 Multiple 10/24/2006
773-755 Chicago Zone 04 Illinois Bell Tel Co N/A
773-756 Chicago Zone 03 Multiple N/A
773-757 Chicago Zone 08 Multiple 6/28/2001
773-758 Chicago Zone 01 Cellco Partnership N/A
773-759 Chicago Zone 03 Multiple 5/21/2002
773-760 Chicago Zone 01 Cellco Partnership N/A
773-761 Chicago Zone 02 Illinois Bell Tel Co N/A
773-762 Chicago Zone 06 Multiple N/A
773-763 Chicago Zone 03 Illinois Bell Tel Co N/A
773-764 Chicago Zone 02 Illinois Bell Tel Co N/A
773-765 Chicago Zone 02 Multiple N/A
773-766 Chicago Zone 03 Multiple 9/15/2008
773-767 Chicago Zone 08 Illinois Bell Tel Co N/A
773-768 Chicago Zone 09 Illinois Bell Tel Co N/A
773-769 Chicago Zone 02 Multiple N/A
773-770 Chicago Zone 04 Multiple N/A
773-771 Chicago Zone 01 Cellco Partnership N/A
773-772 Chicago Zone 04 Illinois Bell Tel Co N/A
773-773 Chicago Zone 09 Onvoy Spectrum 05/18/2023
773-774 Chicago Zone 03 Illinois Bell Tel Co N/A
773-775 Chicago Zone 03 Illinois Bell Tel Co N/A
773-776 Chicago Zone 08 Illinois Bell Tel Co N/A
773-777 Chicago Zone 03 Illinois Bell Tel Co N/A
773-778 Chicago Zone 08 Illinois Bell Tel Co N/A
773-779 Chicago Zone 10 Illinois Bell Tel Co N/A
773-780 Chicago Zone 08 Multiple N/A
773-781 Chicago Zone 01 American Messaging Services 4/23/2001
773-782 Chicago Zone 04 Multiple N/A
773-783 Chicago Zone 07 Illinois Bell Tel Co N/A
773-784 Chicago Zone 02 Illinois Bell Tel Co N/A
773-785 Chicago Zone 10 Illinois Bell Tel Co N/A
773-786 Chicago Zone 05 Multiple N/A
773-787 Chicago Zone 10 Multiple N/A
773-788 Chicago Zone 08 Multiple N/A
773-789 Chicago Zone 08 Multiple 7/12/2007
773-790 Chicago Zone 03 Multiple N/A
773-791 Chicago Zone 03 New Cingular Wireless PCS 5/25/2001
773-792 Chicago Zone 03 Illinois Bell Tel Co N/A
773-793 Chicago Zone 03 T-Mobile USA N/A
773-794 Chicago Zone 03 Multiple N/A
773-795 Chicago Zone 07 Illinois Bell Tel Co N/A
773-796 Chicago Zone 02 Multiple 11/1/2010
773-797 Chicago Zone 05 Multiple N/A
773-798 Chicago Zone 07 Multiple 8/21/2008
773-799 Chicago Zone 04 Multiple N/A
773-800-XXXX --- 773-899-XXXX
NPANXX Area served[1] Provider[2] Date[3]
773-800 Chicago Zone 02 Multiple 6/25/2009
773-801 Chicago Zone 06 Multiple 5/19/2006
773-802 Chicago Zone 01 Cellco Partnership N/A
773-803 Chicago Zone 03 Multiple 3/15/2007
773-804 Chicago Zone 05 Multiple N/A
773-805 Chicago Zone 01 Cellco Partnership N/A
773-806 Chicago Zone 01 New Cingular Wireless PCS N/A
773-807 Chicago Zone 02 T-Mobile USA 8/15/2002
773-808 Chicago Zone 07 Multiple N/A
773-809 Chicago Zone 03 Multiple 9/8/2008
773-810 Chicago Zone 01 New Cingular Wireless PCS N/A
773-812 Chicago Zone 03 New Cingular Wireless PCS 3/23/2009
773-813 Chicago Zone 01 New Cingular Wireless PCS N/A
773-814 Chicago Zone 03 T-Mobile USA 7/22/2002
773-815 Chicago Zone 03 Multiple 3/31/2009
773-816 Chicago Zone 10 Multiple 3/28/2005
773-817 Chicago Zone 03 T-Mobile USA 10/16/2002
773-818 Chicago Zone 01 T-Mobile USA N/A
773-819 Chicago Zone 07 Multiple N/A
773-820 Chicago Zone 01 Multiple N/A
773-821 Chicago Zone 10 Illinois Bell Tel Co N/A
773-822 Chicago Zone 06 Multiple N/A
773-823 Chicago Zone 06 Multiple N/A
773-824 Chicago Zone 03 Multiple N/A
773-825 Chicago Zone 11 Multiple N/A
773-826 Chicago Zone 06 Illinois Bell Tel Co N/A
773-827 Chicago Zone 06 T-Mobile USA N/A
773-828 Chicago Zone 02 Multiple N/A
773-829 Chicago Zone 04 Multiple N/A
773-830 Chicago Zone 05 Multiple N/A
773-831 Chicago Zone 11 Multiple N/A
773-832 Chicago Zone 04 Multiple N/A
773-833 Chicago Zone 01 Cellco Partnership N/A
773-834 Chicago Zone 07 Illinois Bell Tel Co N/A
773-835 Chicago Zone 01 Cellco Partnership N/A
773-836 Chicago Zone 05 Multiple N/A
773-837 Chicago Zone 04 T-Mobile USA 8/8/2001
773-838 Chicago Zone 08 Illinois Bell Tel Co N/A
773-839 Chicago Zone 04 Onvoy 11/23/2015
773-840 Chicago Zone 10 Multiple 6/23/2006
773-841 Chicago Zone 01 New Cingular Wireless PCS N/A
773-842 Chicago Zone 01 T-Mobile USA N/A
773-843 Chicago Zone 06 Illinois Bell Tel Co N/A
773-844 Chicago Zone 03 New Cingular Wireless PCS 5/25/2001
773-845 Chicago Zone 01 American Messaging Services 4/23/2001
773-846 Chicago Zone 07 Illinois Bell Tel Co N/A
773-847 Chicago Zone 06 Illinois Bell Tel Co N/A
773-848 Chicago Zone 01 Cellco Partnership N/A
773-849 Chicago Zone 03 Multiple 2/20/2007
773-850 Chicago Zone 03 Multiple 8/21/2008
773-851 Chicago Zone 07 Multiple 3/9/2001
773-852 Chicago Zone 01 New Cingular Wireless PCS N/A
773-853 Chicago Zone 03 Multiple 10/3/2006
773-854 Chicago Zone 05 Multiple N/A
773-855 Chicago Zone 07 Multiple N/A
773-856 Chicago Zone 02 Rcn Telecom Services Of Illinios N/A
773-857 Chicago Zone 04 Rcn Telecom Services Of Illinios N/A
773-858 Chicago Zone 02 T-Mobile USA 7/6/2001
773-859 Chicago Zone 01 Cellco Partnership N/A
773-860 Chicago Zone 01 New Cingular Wireless PCS N/A
773-861 Chicago Zone 03 New Cingular Wireless PCS 09/03/2024
773-862 Chicago Zone 04 Multiple N/A
773-863 Chicago Zone 08 Multiple N/A
773-864 Chicago Zone 03 Multiple N/A
773-865 Chicago Zone 02 T-Mobile USA 8/30/2001
773-866 Chicago Zone 02 Multiple N/A
773-867 Chicago Zone 03 Multiple N/A
773-868 Chicago Zone 04 Multiple N/A
773-869 Chicago Zone 06 Multiple N/A
773-870 Chicago Zone 03 Multiple 8/6/2002
773-871 Chicago Zone 04 Illinois Bell Tel Co N/A
773-872 Chicago Zone 04 Multiple 06/08/2023
773-873 Chicago Zone 07 Multiple N/A
773-874 Chicago Zone 07 Illinois Bell Tel Co N/A
773-875 Chicago Zone 08 T-Mobile USA 9/6/2001
773-876 Chicago Zone 03 Multiple 3/20/2006
773-877 Chicago Zone 03 Multiple 7/21/2006
773-878 Chicago Zone 02 Illinois Bell Tel Co N/A
773-879 Chicago Zone 01 T-Mobile USA N/A
773-880 Chicago Zone 04 Illinois Bell Tel Co N/A
773-881 Chicago Zone 10 Illinois Bell Tel Co N/A
773-882 Chicago Zone 01 Cellco Partnership N/A
773-883 Chicago Zone 04 Illinois Bell Tel Co N/A
773-884 Chicago Zone 08 Illinois Bell Tel Co N/A
773-885 Chicago Zone 03 T-Mobile USA 3/8/2005
773-886 Chicago Zone 07 Multiple 10/31/2007
773-887 Chicago Zone 05 Multiple N/A
773-888 Chicago Zone 04 Multiple 6/25/2009
773-889 Chicago Zone 05 Illinois Bell Tel Co N/A
773-890 Chicago Zone 06 Illinois Bell Tel Co N/A
773-891 Chicago Zone 07 Multiple 10/18/2006
773-892 Chicago Zone 07 Multiple N/A
773-893 Chicago Zone 06 Multiple N/A
773-894 Chicago Zone 11 Illinois Bell Tel Co N/A
773-895 Chicago Zone 01 T-Mobile USA 8/30/2001
773-896 Chicago Zone 07 Multiple N/A
773-897 Chicago Zone 02 Multiple 3/28/2008
773-898 Chicago Zone 01 Cellco Partnership N/A
773-899 Chicago Zone 03 Multiple 3/15/2006
773-900-XXXX --- 773-999-XXXX
NPANXX Area served[1] Provider[2] Date[3]
773-900 Chicago Zone 03 Multiple 8/19/2019
773-901 Chicago Zone 10 Multiple 5/15/2009
773-902 Chicago Zone 09 Multiple N/A
773-903 Chicago Zone 06 Multiple 08/14/2025
773-904 Chicago Zone 04 Multiple 5/12/2008
773-905 Chicago Zone 10 Multiple N/A
773-906 Chicago Zone 11 Multiple N/A
773-907 Chicago Zone 02 Illinois Bell Tel Co N/A
773-908 Chicago Zone 01 T-Mobile USA N/A
773-909 Chicago Zone 01 Cellco Partnership N/A
773-910 Chicago Zone 01 New Cingular Wireless PCS N/A
773-912 Chicago Zone 08 Multiple N/A
773-913 Chicago Zone 09 Multiple N/A
773-914 Chicago Zone 01 Cellco Partnership N/A
773-915 Chicago Zone 07 Multiple N/A
773-916 Chicago Zone 06 Multiple 8/31/2010
773-917 Chicago Zone 11 Multiple N/A
773-918 Chicago Zone 08 Multiple N/A
773-919 Chicago Zone 01 Cellco Partnership N/A
773-920 Chicago Zone 06 Multiple N/A
773-921 Chicago Zone 05 Multiple N/A
773-922 Chicago Zone 05 Multiple N/A
773-923 Chicago Zone 03 Multiple 5/1/2020
773-924 Chicago Zone 07 Illinois Bell Tel Co N/A
773-925 Chicago Zone 08 Illinois Bell Tel Co N/A
773-926 Chicago Zone 07 Illinois Bell Tel Co N/A
773-927 Chicago Zone 06 Illinois Bell Tel Co N/A
773-928 Chicago Zone 10 Illinois Bell Tel Co N/A
773-929 Chicago Zone 04 Illinois Bell Tel Co N/A
773-930 Chicago Zone 03 Multiple 1/8/2007
773-931 Chicago Zone 10 T-Mobile USA 5/23/2001
773-932 Chicago Zone 03 Multiple N/A
773-933 Chicago Zone 09 Illinois Bell Tel Co N/A
773-934 Chicago Zone 03 T-Mobile USA 8/21/2002
773-935 Chicago Zone 04 Illinois Bell Tel Co N/A
773-936 Chicago Zone 07 T-Mobile USA 8/30/2001
773-937 Chicago Zone 08 Multiple N/A
773-938 Chicago Zone 04 Multiple N/A
773-939 Chicago Zone 08 T-Mobile USA 2/21/2007
773-940 Chicago Zone 06 Multiple 11/17/2008
773-941 Chicago Zone 10 Multiple 11/27/2007
773-942 Chicago Zone 02 Multiple N/A
773-943 Chicago Zone 02 Multiple 9/3/2010
773-944 Chicago Zone 02 Rcn Telecom Services Of Illinios N/A
773-945 Chicago Zone 05 Multiple 6/25/2008
773-946 Chicago Zone 10 Multiple 5/22/2007
773-947 Chicago Zone 07 Multiple N/A
773-948 Chicago Zone 08 Multiple N/A
773-949 Chicago Zone 03 T-Mobile USA 2/24/2011
773-951 Chicago Zone 03 Multiple 10/16/2006
773-952 Chicago Zone 07 Multiple 6/14/2007
773-953 Chicago Zone 03 Multiple 8/29/2007
773-954 Chicago Zone 10 T-Mobile USA 9/30/2005
773-955 Chicago Zone 07 Multiple N/A
773-956 Chicago Zone 06 Multiple 9/4/2008
773-957 Chicago Zone 03 Multiple N/A
773-960 Chicago Zone 03 T-Mobile USA N/A
773-961 Chicago Zone 02 Multiple N/A
773-962 Chicago Zone 07 Multiple N/A
773-963 Chicago Zone 03 Multiple 7/17/2007
773-964 Chicago Zone 10 T-Mobile USA 8/21/2007
773-965 Chicago Zone 01 Cellco Partnership N/A
773-966 Chicago Zone 07 Multiple 4/27/2006
773-967 Chicago Zone 09 Multiple N/A
773-968 Chicago Zone 03 T-Mobile USA 2/12/2001
773-969 Chicago Zone 04 Multiple 1/7/2008
773-970 Chicago Zone 10 New Cingular Wireless PCS 5/15/2009
773-971 Chicago Zone 10 T-Mobile USA 7/11/2007
773-972 Chicago Zone 01 New Cingular Wireless PCS N/A
773-973 Chicago Zone 02 Illinois Bell Tel Co N/A
773-974 Chicago Zone 11 Multiple N/A
773-975 Chicago Zone 04 Illinois Bell Tel Co N/A
773-977 Chicago Zone 02 Multiple N/A
773-978 Chicago Zone 09 Illinois Bell Tel Co N/A
773-979 Chicago Zone 10 Multiple 6/8/2006
773-980 Chicago Zone 10 Multiple 5/15/2008
773-981 Chicago Zone 10 Multiple N/A
773-982 Chicago Zone 10 Multiple 2/29/2008
773-983 Chicago Zone 10 T-Mobile USA 3/28/2002
773-984 Chicago Zone 03 Multiple 3/15/2007
773-985 Chicago Zone 11 Multiple N/A
773-986 Chicago Zone 08 T-Mobile USA 10/16/2007
773-987 Chicago Zone 10 Multiple 3/28/2005
773-988 Chicago Zone 01 T-Mobile USA N/A
773-989 Chicago Zone 02 Illinois Bell Tel Co N/A
773-990 Chicago Zone 03 Multiple 3/20/2006
773-991 Chicago Zone 03 T-Mobile USA N/A
773-992 Chicago Zone 03 Multiple N/A
773-993 Chicago Zone 03 Multiple 2/18/2011
773-994 Chicago Zone 07 Illinois Bell Tel Co N/A
773-995 Chicago Zone 10 Illinois Bell Tel Co N/A
773-996 Chicago Zone 08 T-Mobile USA 10/16/2007
773-997 Chicago Zone 02 Multiple 10/28/2008
773-998 Chicago Zone 10 Multiple 5/15/2009
773-999 Chicago Zone 05 Multiple 5/15/2009
  1. 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.
  2. A single provider refers to the original company controlling a whole NPA-NXX block (10,000 phone numbers). With Number Pooling, NPA-NXX blocks can be split into ten 1,000 phone number blocks and handed over to other service providers (available in the USA and Puerto Rico).
  3. Assignment date. N/A: unavailable date or central office code assigned before 2001.
  4. NXX prefixes last updated: February 13, 2026

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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