Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 773 prefixes
786 of the 786 possible NXX blocks are assigned in area code 773 (100.0% of capacity), spread across 11 rate centers and 22 holders. The largest holders are ILLINOIS BELL TEL CO (257 blocks, 32.7%), T-MOBILE USA, INC. (169 blocks, 21.5%), NEW CINGULAR WIRELESS PCS, LLC - IL (84 blocks, 10.7%). Grouped by brand, AT&T accounts for 364 blocks; brand-attributable holders cover 97% of the code, and the rest are CLECs, VoIP wholesalers and regional carriers that trade under their own names. The assignment records here run from 2001-02-02 to 2026-08-19, with 50 blocks handed out in 2001 alone. 485 blocks (62%) are in thousands-block pooling, meaning the block is shared between carriers in 1,000-number lots rather than held whole – which is why a single NXX can serve several carriers at once. 1 assigned block (460) is not yet in service: assigned to a carrier but not open for calls, so a caller ID from one is spoofed. 165 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
786 assigned blocks of 786
11 rate centers
22 holders of record
62% in thousands-block pooling
Largest holders in 773
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| ILLINOIS BELL TEL CO | AT&T | 257 | 32.7% |
| T-MOBILE USA, INC. | T-Mobile | 169 | 21.5% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 84 | 10.7% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | Verizon | 59 | 7.5% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 38 | 4.8% |
| LEVEL 3 COMMUNICATIONS, LLC - IL | Lumen | 36 | 4.6% |
| PAETEC ITEL, LLC | Windstream | 33 | 4.2% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - IL | AT&T | 23 | 2.9% |
| ONVOY, LLC | Onvoy | 16 | 2% |
| SPOK, INC. | Spok | 13 | 1.7% |
| FIRST COMMUNICATIONS, LLC | – | 11 | 1.4% |
| RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | – | 9 | 1.1% |
Names are printed as they appear in the assignment records, which is the legal entity rather than the brand. Holding a block is not the same as serving the numbers in it: portability moves numbers between carriers and pooling splits a block between several.
All 786 assigned blocks
One row per NXX. “Pooled” means carriers draw 1,000-number lots from the block rather than holding all 10,000, so a pooled prefix can belong to several carriers at once. “Not in service” means assigned but not yet open for calls – a caller ID from one of those is necessarily spoofed. The holder column gives the brand where the legal entity maps to one; the full legal names are in the holders table above, exactly as NANPA records them.
| Prefix | Holder of record | Rate center | Assigned | Pooled | In service |
|---|---|---|---|---|---|
| 773-200 | FIVE9, INC. | CHICGOZN02 | 2023-05-18 | yes | yes |
| 773-201 | Spok | CHICGOZN01 | – | – | yes |
| 773-202 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-203 | AT&T | CHICGOZN01 | – | – | yes |
| 773-204 | AT&T | CHICGOZN07 | 2025-04-30 | yes | yes |
| 773-205 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-206 | AT&T | CHICGOZN01 | – | – | yes |
| 773-207 | Onvoy | CHICGOZN10 | 2019-08-07 | yes | yes |
| 773-208 | AT&T | CHICGOZN01 | – | – | yes |
| 773-209 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-210 | AT&T | CHICGOZN01 | – | – | yes |
| 773-212 | Spok | CHICGOZN03 | – | – | yes |
| 773-213 | AT&T | CHICGOZN01 | – | – | yes |
| 773-214 | Spok | CHICGOZN01 | – | – | yes |
| 773-215 | Spok | CHICGOZN01 | – | – | yes |
| 773-216 | T-Mobile | CHICGOZN01 | – | yes | yes |
| 773-217 | AT&T | CHICGOZN09 | 2009-05-19 | yes | yes |
| 773-218 | AT&T | CHICGOZN01 | – | – | yes |
| 773-219 | T-Mobile | CHICGOZN07 | – | yes | yes |
| 773-220 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-221 | AT&T | CHICGOZN09 | – | – | yes |
| 773-222 | Spok | CHICGOZN01 | – | – | yes |
| 773-223 | Spok | CHICGOZN06 | – | – | yes |
| 773-224 | AT&T | CHICGOZN07 | – | – | yes |
| 773-225 | T-Mobile | CHICGOZN03 | 2006-03-15 | yes | yes |
| 773-226 | T-Mobile | CHICGOZN10 | 2007-11-27 | yes | yes |
| 773-227 | AT&T | CHICGOZN04 | – | – | yes |
| 773-228 | Spok | CHICGOZN01 | – | – | yes |
| 773-229 | AT&T | CHICGOZN08 | – | – | yes |
| 773-230 | AT&T | CHICGOZN03 | – | – | yes |
| 773-231 | Lumen | CHICGOZN07 | 2011-09-08 | yes | yes |
| 773-232 | Onvoy | CHICGOZN10 | 2020-02-05 | yes | yes |
| 773-233 | AT&T | CHICGOZN10 | – | – | yes |
| 773-234 | Bandwidth | CHICGOZN06 | 2009-06-26 | yes | yes |
| 773-235 | AT&T | CHICGOZN04 | – | – | yes |
| 773-236 | T-Mobile | CHICGOZN07 | 2009-06-26 | yes | yes |
| 773-237 | AT&T | CHICGOZN05 | – | – | yes |
| 773-238 | AT&T | CHICGOZN10 | – | – | yes |
| 773-239 | AT&T | CHICGOZN10 | – | – | yes |
| 773-240 | T-Mobile | CHICGOZN10 | 2007-10-16 | yes | yes |
| 773-241 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-242 | AT&T | CHICGOZN06 | – | yes | yes |
| 773-243 | Verizon | CHICGOZN03 | – | yes | yes |
| 773-244 | AT&T | CHICGOZN04 | – | – | yes |
| 773-245 | Bandwidth | CHICGOZN08 | 2010-06-16 | yes | yes |
| 773-246 | INDIANA PAGING NETWORK, INC. | CHICGOZN04 | – | – | yes |
| 773-247 | AT&T | CHICGOZN06 | – | – | yes |
| 773-248 | AT&T | CHICGOZN04 | – | – | yes |
| 773-249 | Lumen | CHICGOZN11 | – | yes | yes |
| 773-250 | Verizon | CHICGOZN02 | – | yes | yes |
| 773-251 | AT&T | CHICGOZN03 | – | – | yes |
| 773-252 | AT&T | CHICGOZN04 | – | – | yes |
| 773-253 | AT&T | CHICGOZN10 | – | yes | yes |
| 773-254 | AT&T | CHICGOZN06 | – | – | yes |
| 773-255 | AT&T | CHICGOZN03 | – | – | yes |
| 773-256 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-257 | AT&T | CHICGOZN06 | – | yes | yes |
| 773-258 | Spok | CHICGOZN01 | – | – | yes |
| 773-259 | AT&T | CHICGOZN01 | – | – | yes |
| 773-260 | AT&T | CHICGOZN10 | – | yes | yes |
| 773-261 | AT&T | CHICGOZN05 | – | yes | yes |
| 773-262 | AT&T | CHICGOZN02 | – | – | yes |
| 773-263 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-264 | AT&T | CHICGOZN10 | – | – | yes |
| 773-265 | AT&T | CHICGOZN06 | – | – | yes |
| 773-266 | AT&T | CHICGOZN01 | – | – | yes |
| 773-267 | AT&T | CHICGOZN02 | – | – | yes |
| 773-268 | AT&T | CHICGOZN07 | – | – | yes |
| 773-269 | AT&T | CHICGOZN04 | – | yes | yes |
| 773-270 | T-Mobile | CHICGOZN04 | 2009-06-04 | yes | yes |
| 773-271 | AT&T | CHICGOZN02 | – | – | yes |
| 773-272 | Verizon | CHICGOZN03 | – | yes | yes |
| 773-273 | AT&T | CHICGOZN02 | – | yes | yes |
| 773-274 | AT&T | CHICGOZN02 | – | – | yes |
| 773-275 | AT&T | CHICGOZN02 | – | – | yes |
| 773-276 | AT&T | CHICGOZN04 | – | – | yes |
| 773-277 | AT&T | CHICGOZN06 | – | yes | yes |
| 773-278 | AT&T | CHICGOZN04 | – | – | yes |
| 773-279 | AT&T | CHICGOZN02 | – | yes | yes |
| 773-280 | T-Mobile | CHICGOZN06 | – | yes | yes |
| 773-281 | AT&T | CHICGOZN04 | – | – | yes |
| 773-282 | AT&T | CHICGOZN03 | – | – | yes |
| 773-283 | AT&T | CHICGOZN03 | – | – | yes |
| 773-284 | AT&T | CHICGOZN08 | – | – | yes |
| 773-285 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-286 | AT&T | CHICGOZN03 | – | – | yes |
| 773-287 | AT&T | CHICGOZN05 | – | – | yes |
| 773-288 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-289 | Verizon | CHICGOZN04 | – | yes | yes |
| 773-290 | Lumen | CHICGOZN02 | – | yes | yes |
| 773-291 | AT&T | CHICGOZN10 | – | – | yes |
| 773-292 | AT&T | CHICGOZN04 | – | – | yes |
| 773-293 | AT&T | CHICGOZN02 | – | yes | yes |
| 773-294 | AT&T | CHICGOZN03 | – | – | yes |
| 773-295 | Verizon | CHICGOZN05 | – | yes | yes |
| 773-296 | AT&T | CHICGOZN04 | – | – | yes |
| 773-297 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-298 | AT&T | CHICGOZN10 | – | – | yes |
| 773-299 | Verizon | CHICGOZN06 | – | yes | yes |
| 773-300 | Onvoy | CHICGOZN05 | 2023-06-15 | yes | yes |
| 773-301 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-302 | T-Mobile | CHICGOZN02 | 2009-02-26 | yes | yes |
| 773-303 | Verizon | CHICGOZN02 | – | yes | yes |
| 773-304 | Verizon | CHICGOZN03 | – | yes | yes |
| 773-305 | Verizon | CHICGOZN04 | – | yes | yes |
| 773-306 | AT&T | CHICGOZN08 | – | yes | yes |
| 773-307 | AT&T | CHICGOZN01 | – | – | yes |
| 773-308 | FIRST COMMUNICATIONS, LLC | CHICGOZN03 | – | yes | yes |
| 773-309 | Windstream | CHICGOZN05 | – | yes | yes |
| 773-310 | T-Mobile | CHICGOZN10 | 2004-03-22 | yes | yes |
| 773-312 | T-Mobile | CHICGOZN02 | – | yes | yes |
| 773-313 | Verizon | CHICGOZN02 | – | yes | yes |
| 773-314 | Verizon | CHICGOZN03 | – | yes | yes |
| 773-315 | AT&T | CHICGOZN01 | – | – | yes |
| 773-316 | AT&T | CHICGOZN01 | – | – | yes |
| 773-317 | T-Mobile | CHICGOZN01 | – | yes | yes |
| 773-318 | Verizon | CHICGOZN03 | 2004-09-07 | yes | yes |
| 773-319 | T-Mobile | CHICGOZN10 | – | yes | yes |
| 773-320 | AT&T | CHICGOZN01 | – | – | yes |
| 773-321 | Lumen | CHICGOZN06 | – | yes | yes |
| 773-322 | T-Mobile | CHICGOZN07 | – | yes | yes |
| 773-323 | American Messaging | CHICGOZN02 | 2001-04-16 | – | yes |
| 773-324 | AT&T | CHICGOZN07 | – | – | yes |
| 773-325 | AT&T | CHICGOZN04 | – | – | yes |
| 773-326 | Lumen | CHICGOZN07 | – | yes | yes |
| 773-327 | AT&T | CHICGOZN04 | – | – | yes |
| 773-328 | FIRST COMMUNICATIONS, LLC | CHICGOZN04 | – | yes | yes |
| 773-329 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-330 | AT&T | CHICGOZN01 | – | – | yes |
| 773-331 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-332 | Verizon | CHICGOZN03 | – | yes | yes |
| 773-333 | American Messaging | CHICGOZN02 | 2001-04-16 | – | yes |
| 773-334 | AT&T | CHICGOZN02 | – | – | yes |
| 773-335 | AT&T | CHICGOZN09 | 2024-12-19 | yes | yes |
| 773-336 | FIRST COMMUNICATIONS, LLC | CHICGOZN09 | – | yes | yes |
| 773-337 | Verizon | CHICGOZN11 | – | yes | yes |
| 773-338 | AT&T | CHICGOZN02 | – | – | yes |
| 773-339 | Verizon | CHICGOZN01 | – | – | yes |
| 773-340 | Onvoy | CHICGOZN08 | – | yes | yes |
| 773-341 | FIRST COMMUNICATIONS, LLC | CHICGOZN10 | – | yes | yes |
| 773-342 | AT&T | CHICGOZN04 | – | – | yes |
| 773-343 | Verizon | CHICGOZN01 | – | – | yes |
| 773-344 | Verizon | CHICGOZN10 | – | yes | yes |
| 773-345 | Verizon | CHICGOZN05 | – | yes | yes |
| 773-346 | Verizon | CHICGOZN06 | – | yes | yes |
| 773-347 | Verizon | CHICGOZN07 | – | yes | yes |
| 773-348 | AT&T | CHICGOZN04 | – | – | yes |
| 773-349 | Verizon | CHICGOZN08 | – | yes | yes |
| 773-350 | Verizon | CHICGOZN01 | – | – | yes |
| 773-351 | AT&T | CHICGOZN01 | – | – | yes |
| 773-352 | Onvoy | CHICGOZN03 | 2021-07-01 | yes | yes |
| 773-353 | Lumen | CHICGOZN03 | – | yes | yes |
| 773-354 | T-Mobile | CHICGOZN01 | – | yes | yes |
| 773-355 | Windstream | CHICGOZN03 | 2001-04-12 | yes | yes |
| 773-356 | AT&T | CHICGOZN09 | – | – | yes |
| 773-357 | FIRST COMMUNICATIONS, LLC | CHICGOZN11 | – | yes | yes |
| 773-358 | Verizon | CHICGOZN07 | – | yes | yes |
| 773-359 | Verizon | CHICGOZN09 | – | yes | yes |
| 773-360 | Lumen | CHICGOZN04 | – | yes | yes |
| 773-361 | AT&T | CHICGOZN07 | – | – | yes |
| 773-362 | Windstream | CHICGOZN08 | – | yes | yes |
| 773-363 | AT&T | CHICGOZN07 | – | – | yes |
| 773-364 | Windstream | CHICGOZN09 | 2001-04-12 | yes | yes |
| 773-365 | Verizon | CHICGOZN04 | – | yes | yes |
| 773-366 | T-Mobile | CHICGOZN10 | 2004-09-24 | yes | yes |
| 773-367 | T-Mobile | CHICGOZN03 | 2009-02-13 | yes | yes |
| 773-368 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-369 | AT&T | CHICGOZN01 | – | – | yes |
| 773-370 | T-Mobile | CHICGOZN01 | – | yes | yes |
| 773-371 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-372 | Verizon | CHICGOZN03 | 2008-07-07 | yes | yes |
| 773-373 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-374 | AT&T | CHICGOZN09 | – | – | yes |
| 773-375 | AT&T | CHICGOZN09 | – | – | yes |
| 773-376 | AT&T | CHICGOZN06 | – | – | yes |
| 773-377 | AT&T | CHICGOZN11 | – | yes | yes |
| 773-378 | AT&T | CHICGOZN05 | – | yes | yes |
| 773-379 | AT&T | CHICGOZN05 | – | yes | yes |
| 773-380 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-381 | AT&T | CHICGOZN02 | – | – | yes |
| 773-382 | Windstream | CHICGOZN09 | 2001-04-12 | yes | yes |
| 773-383 | AT&T | CHICGOZN03 | – | – | yes |
| 773-384 | AT&T | CHICGOZN04 | – | – | yes |
| 773-385 | AT&T | CHICGOZN05 | – | – | yes |
| 773-386 | T-Mobile | CHICGOZN01 | – | yes | yes |
| 773-387 | T-Mobile | CHICGOZN10 | 2004-06-09 | yes | yes |
| 773-388 | AT&T | CHICGOZN04 | – | – | yes |
| 773-389 | Bandwidth | CHICGOZN09 | – | yes | yes |
| 773-390 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-391 | AT&T | CHICGOZN01 | – | – | yes |
| 773-392 | T-Mobile | CHICGOZN01 | – | yes | yes |
| 773-393 | Spok | CHICGOZN01 | – | – | yes |
| 773-394 | AT&T | CHICGOZN04 | – | yes | yes |
| 773-395 | AT&T | CHICGOZN04 | – | yes | yes |
| 773-396 | Windstream | CHICGOZN10 | 2001-04-12 | yes | yes |
| 773-397 | AT&T | CHICGOZN03 | 2009-03-10 | yes | yes |
| 773-398 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-399 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-400 | American Messaging | CHICGOZN02 | 2001-04-16 | – | yes |
| 773-401 | AT&T | CHICGOZN01 | – | – | yes |
| 773-402 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-403 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-404 | AT&T | CHICGOZN04 | – | – | yes |
| 773-405 | Verizon | CHICGOZN01 | – | – | yes |
| 773-406 | T-Mobile | CHICGOZN07 | – | yes | yes |
| 773-407 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-408 | T-Mobile | CHICGOZN06 | 2009-02-13 | yes | yes |
| 773-409 | AT&T | CHICGOZN02 | – | yes | yes |
| 773-410 | T-Mobile | CHICGOZN02 | – | yes | yes |
| 773-412 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-413 | AT&T | CHICGOZN05 | – | yes | yes |
| 773-414 | T-Mobile | CHICGOZN03 | 2004-09-07 | yes | yes |
| 773-415 | Verizon | CHICGOZN01 | – | – | yes |
| 773-416 | T-Mobile | CHICGOZN01 | – | yes | yes |
| 773-417 | Comcast | CHICGOZN05 | – | yes | yes |
| 773-418 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-419 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-420 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-421 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-422 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-423 | Verizon | CHICGOZN02 | – | yes | yes |
| 773-424 | AT&T | CHICGOZN08 | – | yes | yes |
| 773-425 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-426 | T-Mobile | CHICGOZN03 | 2002-01-04 | yes | yes |
| 773-427 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-428 | AT&T | CHICGOZN01 | – | – | yes |
| 773-429 | AT&T | CHICGOZN10 | – | – | yes |
| 773-430 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-431 | AT&T | CHICGOZN03 | 2008-11-05 | yes | yes |
| 773-432 | FIRST COMMUNICATIONS, LLC | CHICGOZN08 | – | yes | yes |
| 773-433 | T-Mobile | CHICGOZN02 | – | yes | yes |
| 773-434 | AT&T | CHICGOZN08 | – | – | yes |
| 773-435 | Verizon | CHICGOZN04 | – | yes | yes |
| 773-436 | AT&T | CHICGOZN08 | – | – | yes |
| 773-437 | AT&T | CHICGOZN09 | – | yes | yes |
| 773-438 | Spok | CHICGOZN01 | – | – | yes |
| 773-439 | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | CHICGOZN03 | – | yes | yes |
| 773-440 | T-Mobile | CHICGOZN10 | – | yes | yes |
| 773-441 | AT&T | CHICGOZN03 | 2008-08-21 | yes | yes |
| 773-442 | Verizon | CHICGOZN02 | – | yes | yes |
| 773-443 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-444 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-445 | AT&T | CHICGOZN10 | – | – | yes |
| 773-446 | Lumen | CHICGOZN06 | – | yes | yes |
| 773-447 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-448 | Onvoy | CHICGOZN07 | 2025-10-15 | yes | yes |
| 773-449 | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | CHICGOZN09 | – | yes | yes |
| 773-450 | AT&T | CHICGOZN01 | – | – | yes |
| 773-451 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-452 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-453 | Verizon | CHICGOZN11 | – | yes | yes |
| 773-454 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-455 | Verizon | CHICGOZN11 | – | yes | yes |
| 773-456 | AT&T | CHICGOZN03 | – | – | yes |
| 773-457 | T-Mobile | CHICGOZN07 | – | yes | yes |
| 773-458 | Verizon | CHICGOZN03 | – | yes | yes |
| 773-459 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-460 | Onvoy | CHICGOZN05 | 2026-08-19 | yes | no |
| 773-461 | T-Mobile | CHICGOZN02 | 2022-08-24 | yes | yes |
| 773-462 | AT&T | CHICGOZN11 | – | yes | yes |
| 773-463 | AT&T | CHICGOZN02 | – | – | yes |
| 773-464 | Spok | CHICGOZN01 | – | – | yes |
| 773-465 | AT&T | CHICGOZN02 | – | – | yes |
| 773-466 | Verizon | CHICGOZN05 | – | yes | yes |
| 773-467 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-468 | AT&T | CHICGOZN10 | – | – | yes |
| 773-469 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-470 | Verizon | CHICGOZN08 | – | yes | yes |
| 773-471 | AT&T | CHICGOZN08 | – | – | yes |
| 773-472 | AT&T | CHICGOZN04 | – | – | yes |
| 773-473 | AT&T | CHICGOZN05 | – | – | yes |
| 773-474 | Windstream | CHICGOZN10 | 2001-04-12 | yes | yes |
| 773-475 | AT&T | CHICGOZN06 | – | yes | yes |
| 773-476 | AT&T | CHICGOZN08 | – | – | yes |
| 773-477 | AT&T | CHICGOZN04 | – | – | yes |
| 773-478 | AT&T | CHICGOZN02 | – | – | yes |
| 773-479 | AT&T | CHICGOZN05 | – | – | yes |
| 773-480 | AT&T | CHICGOZN01 | – | – | yes |
| 773-481 | AT&T | CHICGOZN03 | – | – | yes |
| 773-482 | Windstream | CHICGOZN11 | 2001-04-12 | yes | yes |
| 773-483 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-484 | Verizon | CHICGOZN07 | – | yes | yes |
| 773-485 | Verizon | CHICGOZN01 | – | – | yes |
| 773-486 | AT&T | CHICGOZN04 | – | – | yes |
| 773-487 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-488 | AT&T | CHICGOZN07 | – | – | yes |
| 773-489 | AT&T | CHICGOZN04 | – | – | yes |
| 773-490 | AT&T | CHICGOZN03 | – | – | yes |
| 773-491 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-492 | Bandwidth | CHICGOZN08 | 2011-08-23 | yes | yes |
| 773-493 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-494 | T-Mobile | CHICGOZN03 | 2004-10-13 | yes | yes |
| 773-495 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-496 | Windstream | CHICGOZN07 | 2001-04-12 | yes | yes |
| 773-497 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-498 | AT&T | CHICGOZN08 | – | yes | yes |
| 773-499 | T-Mobile | CHICGOZN03 | 2004-09-28 | yes | yes |
| 773-500 | Onvoy | CHICGOZN10 | 2023-06-15 | yes | yes |
| 773-501 | T-Mobile | CHICGOZN03 | 2001-02-12 | – | yes |
| 773-502 | Verizon | CHICGOZN01 | – | – | yes |
| 773-503 | T-Mobile | CHICGOZN10 | 2004-11-17 | yes | yes |
| 773-504 | AT&T | CHICGOZN01 | – | – | yes |
| 773-505 | Verizon | CHICGOZN01 | – | – | yes |
| 773-506 | AT&T | CHICGOZN02 | – | – | yes |
| 773-507 | T-Mobile | CHICGOZN03 | 2001-02-14 | yes | yes |
| 773-508 | AT&T | CHICGOZN02 | – | – | yes |
| 773-509 | AT&T | CHICGOZN02 | – | – | yes |
| 773-510 | T-Mobile | CHICGOZN03 | 2002-04-04 | – | yes |
| 773-512 | T-Mobile | CHICGOZN03 | 2004-10-13 | yes | yes |
| 773-513 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-514 | AT&T | CHICGOZN09 | 2023-10-16 | yes | yes |
| 773-515 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-516 | Peerless | CHICGOZN02 | – | yes | yes |
| 773-517 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-518 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-519 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-520 | Verizon | CHICGOZN01 | – | – | yes |
| 773-521 | AT&T | CHICGOZN06 | – | yes | yes |
| 773-522 | AT&T | CHICGOZN06 | – | – | yes |
| 773-523 | AT&T | CHICGOZN06 | – | – | yes |
| 773-524 | Lumen | CHICGOZN04 | – | yes | yes |
| 773-525 | AT&T | CHICGOZN04 | – | – | yes |
| 773-526 | Windstream | CHICGOZN08 | 2001-04-12 | yes | yes |
| 773-527 | Lumen | CHICGOZN03 | – | yes | yes |
| 773-528 | AT&T | CHICGOZN04 | – | – | yes |
| 773-529 | AT&T | CHICGOZN04 | – | – | yes |
| 773-530 | Comcast | CHICGOZN09 | 2004-12-30 | yes | yes |
| 773-531 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-532 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-533 | AT&T | CHICGOZN06 | – | – | yes |
| 773-534 | AT&T | CHICGOZN06 | – | – | yes |
| 773-535 | AT&T | CHICGOZN06 | – | – | yes |
| 773-536 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-537 | FIRST COMMUNICATIONS, LLC | CHICGOZN04 | 2004-05-24 | yes | yes |
| 773-538 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-539 | AT&T | CHICGOZN02 | – | – | yes |
| 773-540 | T-Mobile | CHICGOZN03 | 2004-12-28 | yes | yes |
| 773-541 | Lumen | CHICGOZN02 | – | yes | yes |
| 773-542 | AT&T | CHICGOZN06 | – | yes | yes |
| 773-543 | T-Mobile | CHICGOZN04 | 2007-10-26 | yes | yes |
| 773-544 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-545 | AT&T | CHICGOZN03 | – | – | yes |
| 773-546 | AT&T | CHICGOZN10 | – | yes | yes |
| 773-547 | AT&T | CHICGOZN01 | – | – | yes |
| 773-548 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-549 | AT&T | CHICGOZN04 | – | – | yes |
| 773-550 | Verizon | CHICGOZN01 | – | – | yes |
| 773-551 | AT&T | CHICGOZN03 | – | – | yes |
| 773-552 | T-Mobile | CHICGOZN01 | – | yes | yes |
| 773-553 | AT&T | CHICGOZN06 | – | yes | yes |
| 773-554 | T-Mobile | CHICGOZN03 | 2009-07-01 | yes | yes |
| 773-556 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-557 | Windstream | CHICGOZN03 | – | yes | yes |
| 773-558 | Verizon | CHICGOZN03 | 2007-01-15 | yes | yes |
| 773-559 | T-Mobile | CHICGOZN03 | 2005-01-10 | yes | yes |
| 773-560 | AT&T | CHICGOZN06 | 2021-12-15 | yes | yes |
| 773-561 | AT&T | CHICGOZN02 | – | – | yes |
| 773-562 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-563 | T-Mobile | CHICGOZN10 | 2005-10-19 | yes | yes |
| 773-564 | AT&T | CHICGOZN02 | – | yes | yes |
| 773-565 | FIRST COMMUNICATIONS, LLC | CHICGOZN06 | 2004-05-21 | yes | yes |
| 773-566 | Spok | CHICGOZN01 | – | – | yes |
| 773-567 | T-Mobile | CHICGOZN03 | 2005-04-22 | yes | yes |
| 773-568 | AT&T | CHICGOZN10 | – | – | yes |
| 773-569 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-570 | Lumen | CHICGOZN11 | – | yes | yes |
| 773-571 | Verizon | CHICGOZN07 | 2007-02-20 | yes | yes |
| 773-572 | Lumen | CHICGOZN04 | – | yes | yes |
| 773-573 | Verizon | CHICGOZN07 | – | yes | yes |
| 773-574 | T-Mobile | CHICGOZN10 | 2006-03-21 | yes | yes |
| 773-575 | AT&T | CHICGOZN03 | – | – | yes |
| 773-576 | AT&T | CHICGOZN01 | – | – | yes |
| 773-577 | Windstream | CHICGOZN03 | 2001-04-12 | yes | yes |
| 773-578 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-579 | AT&T | CHICGOZN06 | – | – | yes |
| 773-580 | AT&T | CHICGOZN03 | – | – | yes |
| 773-581 | AT&T | CHICGOZN08 | – | – | yes |
| 773-582 | AT&T | CHICGOZN08 | – | – | yes |
| 773-583 | AT&T | CHICGOZN02 | – | – | yes |
| 773-584 | Verizon | CHICGOZN06 | – | yes | yes |
| 773-585 | AT&T | CHICGOZN08 | – | – | yes |
| 773-586 | AT&T | CHICGOZN08 | – | – | yes |
| 773-587 | T-Mobile | CHICGOZN03 | 2007-01-08 | yes | yes |
| 773-588 | AT&T | CHICGOZN02 | – | – | yes |
| 773-589 | AT&T | CHICGOZN05 | – | yes | yes |
| 773-590 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-591 | AT&T | CHICGOZN01 | – | – | yes |
| 773-592 | T-Mobile | CHICGOZN03 | – | – | yes |
| 773-593 | T-Mobile | CHICGOZN01 | – | yes | yes |
| 773-594 | AT&T | CHICGOZN03 | – | – | yes |
| 773-595 | T-Mobile | CHICGOZN07 | 2006-10-30 | yes | yes |
| 773-596 | Windstream | CHICGOZN02 | 2001-04-12 | yes | yes |
| 773-597 | FIRST COMMUNICATIONS, LLC | CHICGOZN07 | 2005-01-21 | yes | yes |
| 773-598 | Verizon | CHICGOZN04 | – | yes | yes |
| 773-599 | Onvoy | CHICGOZN08 | – | yes | yes |
| 773-600 | T-Mobile | CHICGOZN10 | 2004-07-20 | yes | yes |
| 773-601 | AT&T | CHICGOZN11 | – | – | yes |
| 773-602 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-603 | T-Mobile | CHICGOZN10 | 2005-06-30 | yes | yes |
| 773-604 | AT&T | CHICGOZN02 | – | – | yes |
| 773-605 | FIRST COMMUNICATIONS, LLC | CHICGOZN02 | 2006-04-05 | yes | yes |
| 773-606 | T-Mobile | CHICGOZN03 | 2005-07-14 | yes | yes |
| 773-607 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-608 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-609 | Onvoy | CHICGOZN10 | – | yes | yes |
| 773-610 | AT&T | CHICGOZN03 | 2001-10-17 | – | yes |
| 773-612 | AT&T | CHICGOZN01 | – | – | yes |
| 773-613 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-614 | T-Mobile | CHICGOZN10 | 2006-11-08 | yes | yes |
| 773-615 | T-Mobile | CHICGOZN10 | 2001-11-30 | yes | yes |
| 773-616 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-617 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-618 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-619 | T-Mobile | CHICGOZN03 | 2001-03-09 | yes | yes |
| 773-620 | AT&T | CHICGOZN03 | – | – | yes |
| 773-621 | T-Mobile | CHICGOZN03 | 2005-10-10 | yes | yes |
| 773-622 | AT&T | CHICGOZN05 | – | – | yes |
| 773-623 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-624 | AT&T | CHICGOZN07 | – | – | yes |
| 773-625 | AT&T | CHICGOZN05 | – | – | yes |
| 773-626 | AT&T | CHICGOZN05 | – | – | yes |
| 773-627 | Windstream | CHICGOZN08 | 2001-04-12 | yes | yes |
| 773-628 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-629 | T-Mobile | CHICGOZN10 | 2006-11-08 | yes | yes |
| 773-630 | AT&T | CHICGOZN03 | 2009-03-10 | yes | yes |
| 773-631 | AT&T | CHICGOZN03 | – | – | yes |
| 773-632 | Verizon | CHICGOZN03 | – | yes | yes |
| 773-633 | Verizon | CHICGOZN07 | – | yes | yes |
| 773-634 | Verizon | CHICGOZN04 | – | yes | yes |
| 773-635 | Lumen | CHICGOZN06 | – | yes | yes |
| 773-636 | Verizon | CHICGOZN01 | – | – | yes |
| 773-637 | AT&T | CHICGOZN05 | – | – | yes |
| 773-638 | AT&T | CHICGOZN06 | – | yes | yes |
| 773-639 | T-Mobile | CHICGOZN03 | 2007-10-17 | yes | yes |
| 773-640 | Windstream | CHICGOZN06 | 2001-04-12 | yes | yes |
| 773-641 | T-Mobile | CHICGOZN03 | 2005-09-13 | yes | yes |
| 773-642 | T-Mobile | CHICGOZN03 | 2007-03-15 | yes | yes |
| 773-643 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-644 | AT&T | CHICGOZN02 | 2011-01-05 | yes | yes |
| 773-645 | AT&T | CHICGOZN04 | – | yes | yes |
| 773-646 | AT&T | CHICGOZN09 | – | – | yes |
| 773-647 | T-Mobile | CHICGOZN03 | 2007-10-17 | yes | yes |
| 773-648 | Windstream | CHICGOZN06 | 2001-04-12 | yes | yes |
| 773-649 | Windstream | CHICGOZN02 | 2001-04-12 | yes | yes |
| 773-650 | AT&T | CHICGOZN06 | – | – | yes |
| 773-651 | AT&T | CHICGOZN07 | – | – | yes |
| 773-652 | Spok | CHICGOZN01 | – | – | yes |
| 773-653 | Windstream | CHICGOZN03 | – | yes | yes |
| 773-654 | Windstream | CHICGOZN02 | 2001-04-12 | yes | yes |
| 773-655 | T-Mobile | CHICGOZN03 | 2002-03-27 | yes | yes |
| 773-656 | T-Mobile | CHICGOZN10 | 2005-06-30 | yes | yes |
| 773-657 | T-Mobile | CHICGOZN03 | 2007-03-05 | yes | yes |
| 773-658 | AT&T | CHICGOZN05 | – | yes | yes |
| 773-659 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-660 | AT&T | CHICGOZN10 | – | – | yes |
| 773-661 | Windstream | CHICGOZN04 | 2001-04-12 | yes | yes |
| 773-662 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-663 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-664 | Windstream | CHICGOZN05 | 2001-04-12 | yes | yes |
| 773-665 | AT&T | CHICGOZN04 | – | – | yes |
| 773-666 | Bandwidth | CHICGOZN04 | 2011-05-20 | yes | yes |
| 773-667 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-668 | Lumen | CHICGOZN05 | 2006-04-27 | yes | yes |
| 773-669 | Bandwidth | CHICGOZN05 | 2009-06-08 | yes | yes |
| 773-670 | AT&T | CHICGOZN10 | 2024-09-03 | yes | yes |
| 773-671 | T-Mobile | CHICGOZN01 | – | yes | yes |
| 773-672 | T-Mobile | CHICGOZN10 | 2008-02-29 | yes | yes |
| 773-673 | Windstream | CHICGOZN05 | 2001-04-12 | yes | yes |
| 773-674 | AT&T | CHICGOZN06 | 2008-05-15 | yes | yes |
| 773-675 | Verizon | CHICGOZN07 | 2008-07-07 | yes | yes |
| 773-676 | AT&T | CHICGOZN05 | – | yes | yes |
| 773-677 | AT&T | CHICGOZN03 | 2002-03-07 | – | yes |
| 773-678 | T-Mobile | CHICGOZN03 | 2005-02-21 | yes | yes |
| 773-679 | T-Mobile | CHICGOZN10 | 2006-07-26 | yes | yes |
| 773-680 | AT&T | CHICGOZN03 | 2001-02-02 | – | yes |
| 773-681 | Verizon | CHICGOZN02 | – | yes | yes |
| 773-682 | Verizon | CHICGOZN03 | 2005-10-17 | yes | yes |
| 773-683 | AT&T | CHICGOZN03 | 2008-01-23 | yes | yes |
| 773-684 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-685 | AT&T | CHICGOZN03 | – | – | yes |
| 773-686 | AT&T | CHICGOZN11 | – | – | yes |
| 773-687 | AT&T | CHICGOZN04 | – | yes | yes |
| 773-688 | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | CHICGOZN05 | 2004-07-27 | yes | yes |
| 773-689 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-690 | T-Mobile | CHICGOZN07 | 2008-11-05 | yes | yes |
| 773-691 | T-Mobile | CHICGOZN08 | 2007-07-10 | yes | yes |
| 773-692 | Onvoy | CHICGOZN04 | 2019-01-31 | yes | yes |
| 773-693 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-694 | AT&T | CHICGOZN11 | – | yes | yes |
| 773-695 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-696 | Windstream | CHICGOZN06 | – | yes | yes |
| 773-697 | Windstream | CHICGOZN04 | 2001-04-12 | yes | yes |
| 773-698 | T-Mobile | CHICGOZN04 | 2007-06-13 | yes | yes |
| 773-699 | T-Mobile | CHICGOZN03 | 2005-04-19 | yes | yes |
| 773-701 | T-Mobile | CHICGOZN10 | 2005-09-30 | yes | yes |
| 773-702 | AT&T | CHICGOZN07 | – | – | yes |
| 773-703 | AT&T | CHICGOZN10 | 2008-09-02 | yes | yes |
| 773-704 | T-Mobile | CHICGOZN03 | 2002-01-23 | – | yes |
| 773-705 | Verizon | CHICGOZN04 | 2024-08-28 | yes | yes |
| 773-706 | Verizon | CHICGOZN03 | 2005-07-18 | yes | yes |
| 773-707 | AT&T | CHICGOZN10 | 2008-11-05 | yes | yes |
| 773-708 | AT&T | CHICGOZN10 | 2008-11-05 | yes | yes |
| 773-709 | AT&T | CHICGOZN03 | 2008-11-05 | yes | yes |
| 773-710 | AT&T | CHICGOZN03 | 2001-04-16 | – | yes |
| 773-712 | AT&T | CHICGOZN03 | 2008-11-05 | yes | yes |
| 773-713 | American Messaging | CHICGOZN02 | – | – | yes |
| 773-714 | AT&T | CHICGOZN03 | – | – | yes |
| 773-715 | T-Mobile | CHICGOZN06 | 2002-10-16 | yes | yes |
| 773-716 | T-Mobile | CHICGOZN01 | – | yes | yes |
| 773-717 | Verizon | CHICGOZN07 | 2008-09-16 | yes | yes |
| 773-718 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-719 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-720 | Verizon | CHICGOZN01 | – | – | yes |
| 773-721 | AT&T | CHICGOZN09 | – | – | yes |
| 773-722 | AT&T | CHICGOZN06 | – | – | yes |
| 773-723 | AT&T | CHICGOZN07 | – | – | yes |
| 773-724 | Verizon | CHICGOZN03 | 2005-10-17 | yes | yes |
| 773-725 | AT&T | CHICGOZN03 | – | – | yes |
| 773-726 | Windstream | CHICGOZN07 | 2001-04-12 | yes | yes |
| 773-727 | T-Mobile | CHICGOZN10 | 2002-10-16 | yes | yes |
| 773-728 | AT&T | CHICGOZN02 | – | – | yes |
| 773-729 | Windstream | CHICGOZN07 | 2001-04-12 | yes | yes |
| 773-730 | AT&T | CHICGOZN02 | – | – | yes |
| 773-731 | AT&T | CHICGOZN09 | – | – | yes |
| 773-732 | T-Mobile | CHICGOZN03 | – | – | yes |
| 773-733 | Windstream | CHICGOZN06 | 2001-04-12 | yes | yes |
| 773-734 | AT&T | CHICGOZN09 | – | – | yes |
| 773-735 | AT&T | CHICGOZN08 | – | – | yes |
| 773-736 | AT&T | CHICGOZN03 | – | – | yes |
| 773-737 | AT&T | CHICGOZN08 | – | – | yes |
| 773-738 | T-Mobile | CHICGOZN03 | 2007-08-29 | yes | yes |
| 773-739 | T-Mobile | CHICGOZN02 | – | yes | yes |
| 773-740 | Onvoy | CHICGOZN02 | 2025-08-12 | yes | yes |
| 773-741 | AT&T | CHICGOZN11 | – | yes | yes |
| 773-742 | T-Mobile | CHICGOZN03 | 2001-11-05 | – | yes |
| 773-743 | AT&T | CHICGOZN02 | – | – | yes |
| 773-744 | T-Mobile | CHICGOZN06 | 2001-08-30 | – | yes |
| 773-745 | AT&T | CHICGOZN05 | – | – | yes |
| 773-746 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-747 | T-Mobile | CHICGOZN04 | 2008-01-07 | yes | yes |
| 773-748 | INDIANA PAGING NETWORK, INC. | CHICGOZN10 | – | – | yes |
| 773-749 | T-Mobile | CHICGOZN03 | 2007-06-19 | yes | yes |
| 773-750 | AT&T | CHICGOZN03 | 2001-09-13 | – | yes |
| 773-751 | Verizon | CHICGOZN02 | – | yes | yes |
| 773-752 | AT&T | CHICGOZN07 | – | – | yes |
| 773-753 | AT&T | CHICGOZN07 | – | – | yes |
| 773-754 | Comcast | CHICGOZN02 | 2006-10-24 | yes | yes |
| 773-755 | AT&T | CHICGOZN04 | – | – | yes |
| 773-756 | Verizon | CHICGOZN03 | – | yes | yes |
| 773-757 | AT&T | CHICGOZN08 | 2001-06-28 | yes | yes |
| 773-758 | Verizon | CHICGOZN01 | – | – | yes |
| 773-759 | T-Mobile | CHICGOZN03 | 2002-05-21 | yes | yes |
| 773-760 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-761 | AT&T | CHICGOZN02 | – | – | yes |
| 773-762 | AT&T | CHICGOZN06 | – | yes | yes |
| 773-763 | AT&T | CHICGOZN03 | – | – | yes |
| 773-764 | AT&T | CHICGOZN02 | – | – | yes |
| 773-765 | AT&T | CHICGOZN02 | – | yes | yes |
| 773-766 | Verizon | CHICGOZN03 | 2008-09-15 | yes | yes |
| 773-767 | AT&T | CHICGOZN08 | – | – | yes |
| 773-768 | AT&T | CHICGOZN09 | – | – | yes |
| 773-769 | AT&T | CHICGOZN02 | – | yes | yes |
| 773-770 | Windstream | CHICGOZN04 | – | yes | yes |
| 773-771 | Verizon | CHICGOZN01 | – | – | yes |
| 773-772 | AT&T | CHICGOZN04 | – | – | yes |
| 773-773 | Charter | CHICGOZN09 | 2023-05-18 | yes | yes |
| 773-774 | AT&T | CHICGOZN03 | – | – | yes |
| 773-775 | AT&T | CHICGOZN03 | – | – | yes |
| 773-776 | AT&T | CHICGOZN08 | – | – | yes |
| 773-777 | AT&T | CHICGOZN03 | – | – | yes |
| 773-778 | AT&T | CHICGOZN08 | – | – | yes |
| 773-779 | AT&T | CHICGOZN10 | – | – | yes |
| 773-780 | T-Mobile | CHICGOZN08 | – | yes | yes |
| 773-781 | American Messaging | CHICGOZN01 | 2001-04-23 | – | yes |
| 773-782 | AT&T | CHICGOZN04 | – | yes | yes |
| 773-783 | AT&T | CHICGOZN07 | – | – | yes |
| 773-784 | AT&T | CHICGOZN02 | – | – | yes |
| 773-785 | AT&T | CHICGOZN10 | – | – | yes |
| 773-786 | Windstream | CHICGOZN05 | – | yes | yes |
| 773-787 | Verizon | CHICGOZN10 | – | yes | yes |
| 773-788 | AT&T | CHICGOZN08 | – | yes | yes |
| 773-789 | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | CHICGOZN08 | 2007-07-12 | yes | yes |
| 773-790 | Lumen | CHICGOZN03 | – | yes | yes |
| 773-791 | AT&T | CHICGOZN03 | 2001-05-25 | – | yes |
| 773-792 | AT&T | CHICGOZN03 | – | – | yes |
| 773-793 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-794 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-795 | AT&T | CHICGOZN07 | – | – | yes |
| 773-796 | Lumen | CHICGOZN02 | 2010-11-01 | yes | yes |
| 773-797 | Lumen | CHICGOZN05 | – | yes | yes |
| 773-798 | Verizon | CHICGOZN07 | 2008-08-21 | yes | yes |
| 773-799 | Verizon | CHICGOZN04 | – | yes | yes |
| 773-800 | Lumen | CHICGOZN02 | 2009-06-25 | yes | yes |
| 773-801 | AT&T | CHICGOZN06 | 2006-05-19 | yes | yes |
| 773-802 | Verizon | CHICGOZN01 | – | – | yes |
| 773-803 | T-Mobile | CHICGOZN03 | 2007-03-15 | yes | yes |
| 773-804 | AT&T | CHICGOZN05 | – | yes | yes |
| 773-805 | Verizon | CHICGOZN01 | – | – | yes |
| 773-806 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-807 | T-Mobile | CHICGOZN02 | 2002-08-15 | – | yes |
| 773-808 | T-Mobile | CHICGOZN07 | – | yes | yes |
| 773-809 | T-Mobile | CHICGOZN03 | 2008-09-08 | yes | yes |
| 773-810 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-812 | AT&T | CHICGOZN03 | 2009-03-23 | yes | yes |
| 773-813 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-814 | T-Mobile | CHICGOZN03 | 2002-07-22 | – | yes |
| 773-815 | AT&T | CHICGOZN03 | 2009-03-31 | yes | yes |
| 773-816 | T-Mobile | CHICGOZN10 | 2005-03-28 | yes | yes |
| 773-817 | T-Mobile | CHICGOZN03 | 2002-10-16 | – | yes |
| 773-818 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-819 | Onvoy | CHICGOZN07 | – | yes | yes |
| 773-820 | AT&T | CHICGOZN01 | – | yes | yes |
| 773-821 | AT&T | CHICGOZN10 | – | – | yes |
| 773-822 | T-Mobile | CHICGOZN06 | – | yes | yes |
| 773-823 | AT&T | CHICGOZN06 | – | yes | yes |
| 773-824 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-825 | AT&T | CHICGOZN11 | – | yes | yes |
| 773-826 | AT&T | CHICGOZN06 | – | – | yes |
| 773-827 | T-Mobile | CHICGOZN06 | – | yes | yes |
| 773-828 | Lumen | CHICGOZN02 | – | yes | yes |
| 773-829 | Lumen | CHICGOZN04 | – | yes | yes |
| 773-830 | Verizon | CHICGOZN05 | – | yes | yes |
| 773-831 | Lumen | CHICGOZN11 | – | yes | yes |
| 773-832 | AT&T | CHICGOZN04 | – | yes | yes |
| 773-833 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-834 | AT&T | CHICGOZN07 | – | – | yes |
| 773-835 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-836 | AT&T | CHICGOZN05 | – | yes | yes |
| 773-837 | T-Mobile | CHICGOZN04 | 2001-08-08 | – | yes |
| 773-838 | AT&T | CHICGOZN08 | – | – | yes |
| 773-839 | Onvoy | CHICGOZN04 | 2015-11-23 | yes | yes |
| 773-840 | Windstream | CHICGOZN10 | 2006-06-23 | yes | yes |
| 773-841 | AT&T | CHICGOZN01 | – | – | yes |
| 773-842 | T-Mobile | CHICGOZN01 | 2001-04-19 | yes | yes |
| 773-843 | AT&T | CHICGOZN06 | – | – | yes |
| 773-844 | AT&T | CHICGOZN03 | 2001-05-25 | – | yes |
| 773-845 | American Messaging | CHICGOZN01 | 2001-04-23 | – | yes |
| 773-846 | AT&T | CHICGOZN07 | – | – | yes |
| 773-847 | AT&T | CHICGOZN06 | – | – | yes |
| 773-848 | Verizon | CHICGOZN01 | – | – | yes |
| 773-849 | Verizon | CHICGOZN03 | 2007-02-20 | yes | yes |
| 773-850 | Verizon | CHICGOZN03 | 2008-08-21 | yes | yes |
| 773-851 | T-Mobile | CHICGOZN07 | 2001-03-09 | yes | yes |
| 773-852 | AT&T | CHICGOZN01 | – | – | yes |
| 773-853 | T-Mobile | CHICGOZN03 | 2006-10-03 | yes | yes |
| 773-854 | AT&T | CHICGOZN05 | – | yes | yes |
| 773-855 | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | CHICGOZN07 | – | yes | yes |
| 773-856 | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | CHICGOZN02 | – | – | yes |
| 773-857 | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | CHICGOZN04 | – | – | yes |
| 773-858 | T-Mobile | CHICGOZN02 | 2001-07-06 | yes | yes |
| 773-859 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-860 | AT&T | CHICGOZN01 | – | – | yes |
| 773-861 | AT&T | CHICGOZN03 | 2024-09-03 | yes | yes |
| 773-862 | AT&T | CHICGOZN04 | – | yes | yes |
| 773-863 | AT&T | CHICGOZN08 | – | yes | yes |
| 773-864 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-865 | T-Mobile | CHICGOZN02 | 2001-08-30 | – | yes |
| 773-866 | AT&T | CHICGOZN02 | – | yes | yes |
| 773-867 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-868 | AT&T | CHICGOZN04 | – | yes | yes |
| 773-869 | AT&T | CHICGOZN06 | – | yes | yes |
| 773-870 | AT&T | CHICGOZN03 | 2002-08-06 | yes | yes |
| 773-871 | AT&T | CHICGOZN04 | – | – | yes |
| 773-872 | Onvoy | CHICGOZN04 | 2023-06-08 | yes | yes |
| 773-873 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-874 | AT&T | CHICGOZN07 | – | – | yes |
| 773-875 | T-Mobile | CHICGOZN08 | 2001-09-06 | – | yes |
| 773-876 | T-Mobile | CHICGOZN03 | 2006-03-20 | yes | yes |
| 773-877 | T-Mobile | CHICGOZN03 | 2006-07-21 | yes | yes |
| 773-878 | AT&T | CHICGOZN02 | – | – | yes |
| 773-879 | T-Mobile | CHICGOZN01 | – | yes | yes |
| 773-880 | AT&T | CHICGOZN04 | – | – | yes |
| 773-881 | AT&T | CHICGOZN10 | – | – | yes |
| 773-882 | Verizon | CHICGOZN01 | – | – | yes |
| 773-883 | AT&T | CHICGOZN04 | – | – | yes |
| 773-884 | AT&T | CHICGOZN08 | – | – | yes |
| 773-885 | T-Mobile | CHICGOZN03 | 2005-03-08 | yes | yes |
| 773-886 | T-Mobile | CHICGOZN07 | 2007-10-31 | yes | yes |
| 773-887 | Verizon | CHICGOZN05 | – | yes | yes |
| 773-888 | Bandwidth | CHICGOZN04 | 2009-06-25 | yes | yes |
| 773-889 | AT&T | CHICGOZN05 | – | – | yes |
| 773-890 | AT&T | CHICGOZN06 | – | – | yes |
| 773-891 | Comcast | CHICGOZN07 | 2006-10-18 | yes | yes |
| 773-892 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-893 | Verizon | CHICGOZN06 | – | yes | yes |
| 773-894 | AT&T | CHICGOZN11 | – | – | yes |
| 773-895 | T-Mobile | CHICGOZN01 | 2001-08-30 | – | yes |
| 773-896 | Verizon | CHICGOZN07 | – | yes | yes |
| 773-897 | Peerless | CHICGOZN02 | 2008-03-28 | yes | yes |
| 773-898 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-899 | Verizon | CHICGOZN03 | 2006-03-15 | yes | yes |
| 773-900 | FRACTEL, LLC | CHICGOZN03 | 2019-08-19 | yes | yes |
| 773-901 | AT&T | CHICGOZN10 | 2009-05-15 | yes | yes |
| 773-902 | Lumen | CHICGOZN09 | – | yes | yes |
| 773-903 | Onvoy | CHICGOZN06 | 2025-08-14 | yes | yes |
| 773-904 | Lumen | CHICGOZN04 | 2008-05-12 | yes | yes |
| 773-905 | Lumen | CHICGOZN10 | – | yes | yes |
| 773-906 | Lumen | CHICGOZN11 | – | yes | yes |
| 773-907 | AT&T | CHICGOZN02 | – | – | yes |
| 773-908 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-909 | Verizon | CHICGOZN01 | – | – | yes |
| 773-910 | AT&T | CHICGOZN01 | – | – | yes |
| 773-912 | Lumen | CHICGOZN08 | – | yes | yes |
| 773-913 | Lumen | CHICGOZN09 | – | yes | yes |
| 773-914 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-915 | Lumen | CHICGOZN07 | – | yes | yes |
| 773-916 | T-Mobile | CHICGOZN06 | 2010-08-31 | yes | yes |
| 773-917 | Verizon | CHICGOZN11 | – | yes | yes |
| 773-918 | AT&T | CHICGOZN08 | – | yes | yes |
| 773-919 | Verizon | CHICGOZN01 | – | – | yes |
| 773-920 | Lumen | CHICGOZN06 | – | yes | yes |
| 773-921 | AT&T | CHICGOZN05 | – | yes | yes |
| 773-922 | Lumen | CHICGOZN05 | – | yes | yes |
| 773-923 | AT&T | CHICGOZN03 | 2020-05-01 | yes | yes |
| 773-924 | AT&T | CHICGOZN07 | – | – | yes |
| 773-925 | AT&T | CHICGOZN08 | – | – | yes |
| 773-926 | AT&T | CHICGOZN07 | – | – | yes |
| 773-927 | AT&T | CHICGOZN06 | – | – | yes |
| 773-928 | AT&T | CHICGOZN10 | – | – | yes |
| 773-929 | AT&T | CHICGOZN04 | – | – | yes |
| 773-930 | T-Mobile | CHICGOZN03 | 2007-01-08 | yes | yes |
| 773-931 | T-Mobile | CHICGOZN10 | 2001-05-23 | – | yes |
| 773-932 | Lumen | CHICGOZN03 | – | yes | yes |
| 773-933 | AT&T | CHICGOZN09 | – | – | yes |
| 773-934 | T-Mobile | CHICGOZN03 | 2002-08-21 | – | yes |
| 773-935 | AT&T | CHICGOZN04 | – | – | yes |
| 773-936 | T-Mobile | CHICGOZN07 | 2001-08-30 | – | yes |
| 773-937 | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | CHICGOZN08 | – | yes | yes |
| 773-938 | Lumen | CHICGOZN04 | – | yes | yes |
| 773-939 | T-Mobile | CHICGOZN08 | 2007-02-21 | yes | yes |
| 773-940 | Comcast | CHICGOZN06 | 2008-11-17 | yes | yes |
| 773-941 | T-Mobile | CHICGOZN10 | 2007-11-27 | yes | yes |
| 773-942 | Lumen | CHICGOZN02 | – | yes | yes |
| 773-943 | T-Mobile | CHICGOZN02 | 2010-09-03 | yes | yes |
| 773-944 | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | CHICGOZN02 | – | – | yes |
| 773-945 | Peerless | CHICGOZN05 | 2008-06-25 | yes | yes |
| 773-946 | Lumen | CHICGOZN10 | 2007-05-22 | yes | yes |
| 773-947 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-948 | Verizon | CHICGOZN08 | – | yes | yes |
| 773-949 | T-Mobile | CHICGOZN03 | 2011-02-24 | yes | yes |
| 773-951 | Verizon | CHICGOZN03 | 2006-10-16 | yes | yes |
| 773-952 | T-Mobile | CHICGOZN07 | 2007-06-14 | yes | yes |
| 773-953 | T-Mobile | CHICGOZN03 | 2007-08-29 | yes | yes |
| 773-954 | T-Mobile | CHICGOZN10 | 2005-09-30 | yes | yes |
| 773-955 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-956 | T-Mobile | CHICGOZN06 | 2008-09-04 | yes | yes |
| 773-957 | Windstream | CHICGOZN03 | – | yes | yes |
| 773-960 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-961 | AT&T | CHICGOZN02 | – | yes | yes |
| 773-962 | AT&T | CHICGOZN07 | – | yes | yes |
| 773-963 | T-Mobile | CHICGOZN03 | 2007-07-17 | yes | yes |
| 773-964 | T-Mobile | CHICGOZN10 | 2007-08-21 | yes | yes |
| 773-965 | Verizon | CHICGOZN01 | – | yes | yes |
| 773-966 | Lumen | CHICGOZN07 | 2006-04-27 | yes | yes |
| 773-967 | Verizon | CHICGOZN09 | – | yes | yes |
| 773-968 | T-Mobile | CHICGOZN03 | 2001-02-12 | – | yes |
| 773-969 | T-Mobile | CHICGOZN04 | 2008-01-07 | yes | yes |
| 773-970 | AT&T | CHICGOZN10 | 2009-05-15 | yes | yes |
| 773-971 | T-Mobile | CHICGOZN10 | 2007-07-11 | yes | yes |
| 773-972 | AT&T | CHICGOZN01 | – | – | yes |
| 773-973 | AT&T | CHICGOZN02 | – | – | yes |
| 773-974 | Windstream | CHICGOZN11 | – | yes | yes |
| 773-975 | AT&T | CHICGOZN04 | – | – | yes |
| 773-977 | Windstream | CHICGOZN02 | – | yes | yes |
| 773-978 | AT&T | CHICGOZN09 | – | – | yes |
| 773-979 | T-Mobile | CHICGOZN10 | 2006-06-08 | yes | yes |
| 773-980 | AT&T | CHICGOZN10 | 2008-05-15 | yes | yes |
| 773-981 | Verizon | CHICGOZN10 | – | yes | yes |
| 773-982 | T-Mobile | CHICGOZN10 | 2008-02-29 | yes | yes |
| 773-983 | T-Mobile | CHICGOZN10 | 2002-03-28 | – | yes |
| 773-984 | T-Mobile | CHICGOZN03 | 2007-03-15 | yes | yes |
| 773-985 | Verizon | CHICGOZN11 | – | yes | yes |
| 773-986 | T-Mobile | CHICGOZN08 | 2007-10-16 | yes | yes |
| 773-987 | FIRST COMMUNICATIONS, LLC | CHICGOZN10 | 2005-03-28 | yes | yes |
| 773-988 | T-Mobile | CHICGOZN01 | – | – | yes |
| 773-989 | AT&T | CHICGOZN02 | – | – | yes |
| 773-990 | AT&T | CHICGOZN03 | 2006-03-20 | yes | yes |
| 773-991 | T-Mobile | CHICGOZN03 | – | yes | yes |
| 773-992 | AT&T | CHICGOZN03 | – | yes | yes |
| 773-993 | T-Mobile | CHICGOZN03 | 2011-02-18 | yes | yes |
| 773-994 | AT&T | CHICGOZN07 | – | – | yes |
| 773-995 | AT&T | CHICGOZN10 | – | – | yes |
| 773-996 | T-Mobile | CHICGOZN08 | 2007-10-16 | yes | yes |
| 773-997 | T-Mobile | CHICGOZN02 | 2008-10-28 | yes | yes |
| 773-998 | AT&T | CHICGOZN10 | 2009-05-15 | yes | yes |
| 773-999 | AT&T | CHICGOZN05 | 2009-05-15 | yes | yes |
Frequently asked
How many prefixes does area code 773 have?
786 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 7,860 thousand-number ranges across 11 rate centers.
What do the first three digits after 773 tell me?
They identify the block, which tells you the rate center it was allocated to and the carrier that received it. They do not tell you who serves the number today: portability moves numbers between carriers, and pooling splits a block between several of them.
Is a 773 prefix tied to a specific town?
To a rate center, which is billing geography rather than a town. NANPA abbreviates rate center names to ten characters and in large metros uses zone codes, so the name is a NANPA label, not a place name.
What does “pooled” mean in the 773 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 485 of 773's blocks are pooled, which is how regulators slowed down area code exhaustion – and why one prefix can belong to several carriers.
Source and limits
NANPA CO Code Assignment Records, all states, utilized codes, file updated 11/01/2026 – the rows where the record's Use field is “AS” (assigned). Unavailable codes are excluded. The records say who received a block and when, not who serves a particular number today.
More about this code: overview · carriers · spam complaints · local time