Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 512 prefixes
785 of the 786 possible NXX blocks are assigned in area code 512 (99.9% of capacity), spread across 36 rate centers and 36 holders. The largest holders are SOUTHWESTERN BELL (273 blocks, 34.8%), NEW CINGULAR WIRELESS PCS, LLC - IL (98 blocks, 12.5%), T-MOBILE USA, INC. (70 blocks, 8.9%). Grouped by brand, AT&T accounts for 392 blocks; brand-attributable holders cover 96% 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 2001-01-08 to 2024-11-01, with 27 blocks handed out in 2014 alone. 523 blocks (67%) 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. 144 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
785 assigned blocks of 786
36 rate centers
36 holders of record
67% in thousands-block pooling
Largest holders in 512
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| SOUTHWESTERN BELL | AT&T | 273 | 34.8% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 98 | 12.5% |
| T-MOBILE USA, INC. | T-Mobile | 70 | 8.9% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | Verizon | 49 | 6.2% |
| LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Lumen | 45 | 5.7% |
| FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | Frontier | 37 | 4.7% |
| ONVOY, LLC - TX | Onvoy | 26 | 3.3% |
| LEVEL 3 COMMUNICATIONS, LLC - TX | Lumen | 21 | 2.7% |
| BANDWIDTH.COM CLEC, LLC - TX | Bandwidth | 17 | 2.2% |
| SPOK, INC. | Spok | 16 | 2% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | AT&T | 16 | 2% |
| GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | 14 | 1.8% |
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.
Rate centers with their own page
Rate centers where at least three blocks are assigned, excluding the numbered metro zone codes. The remainder are in the full table below.
All 785 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 |
|---|---|---|---|---|---|
| 512-200 | T-Mobile | AUSTIN | – | yes | yes |
| 512-201 | Verizon | AUSTIN | 2011-12-20 | yes | yes |
| 512-202 | Verizon | AUSTIN | 2012-01-19 | yes | yes |
| 512-203 | T-Mobile | AUSTIN | 2002-11-14 | yes | yes |
| 512-204 | American Messaging | AUSTIN | – | – | yes |
| 512-205 | Spok | AUSTIN | – | – | yes |
| 512-206 | AT&T | AUSTIN | – | yes | yes |
| 512-207 | AT&T | AUSTIN | – | yes | yes |
| 512-208 | American Messaging | AUSTIN | – | – | yes |
| 512-209 | American Messaging | AUSTIN | 2001-05-01 | – | yes |
| 512-210 | Verizon | SAN MARCOS | 2015-03-27 | yes | yes |
| 512-212 | AT&T | MARTINDALE | 2004-03-09 | yes | yes |
| 512-213 | Lumen | LOCKHART | 2003-02-11 | yes | yes |
| 512-214 | T-Mobile | SAN MARCOS | 2014-10-20 | yes | yes |
| 512-215 | Charter | AUSTIN | 2004-03-10 | yes | yes |
| 512-216 | AT&T | SAN MARCOS | 2006-11-01 | yes | yes |
| 512-217 | AT&T | AUSTIN | – | – | yes |
| 512-218 | AT&T | AUSTIN | – | – | yes |
| 512-219 | AT&T | AUSTIN | – | – | yes |
| 512-220 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | AUSTIN | – | – | yes |
| 512-221 | AT&T | AUSTIN | 2011-04-15 | yes | yes |
| 512-222 | EVOLVE CELLULAR, INC. | AUSTIN | 2010-02-18 | yes | yes |
| 512-223 | AT&T | AUSTIN | – | – | yes |
| 512-224 | AT&T | AUSTIN | – | – | yes |
| 512-225 | Lumen | AUSTIN | – | yes | yes |
| 512-226 | AT&T | AUSTIN | – | yes | yes |
| 512-227 | AT&T | LOCKHART | 2001-05-09 | yes | yes |
| 512-228 | AT&T | AUSTIN | – | yes | yes |
| 512-229 | TPx | ELGIN | – | yes | yes |
| 512-230 | Verizon | AUSTIN | 2011-03-25 | yes | yes |
| 512-231 | AT&T | AUSTIN | – | – | yes |
| 512-232 | AT&T | AUSTIN | – | – | yes |
| 512-233 | Verizon | AUSTIN | – | yes | yes |
| 512-234 | Verizon | BURNET | 2002-05-07 | yes | yes |
| 512-235 | Spok | AUSTIN | – | – | yes |
| 512-236 | AT&T | AUSTIN | – | yes | yes |
| 512-237 | AT&T | SMITHVILLE | – | yes | yes |
| 512-238 | AT&T | AUSTIN | – | – | yes |
| 512-239 | AT&T | AUSTIN | – | yes | yes |
| 512-240 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | GEORGETOWN | – | yes | yes |
| 512-241 | AT&T | AUSTIN | – | yes | yes |
| 512-242 | AT&T | AUSTIN | – | – | yes |
| 512-243 | AT&T | AUSTIN | – | yes | yes |
| 512-244 | AT&T | AUSTIN | – | – | yes |
| 512-245 | Brightspeed | SAN MARCOS | – | – | yes |
| 512-246 | AT&T | AUSTIN | – | – | yes |
| 512-247 | AT&T | AUSTIN | – | yes | yes |
| 512-248 | AT&T | AUSTIN | – | – | yes |
| 512-249 | AT&T | AUSTIN | – | – | yes |
| 512-250 | AT&T | AUSTIN | – | – | yes |
| 512-251 | AT&T | AUSTIN | – | – | yes |
| 512-252 | AT&T | AUSTIN | – | – | yes |
| 512-253 | Frontier | PAIGE | – | yes | yes |
| 512-254 | Onvoy | AUSTIN | 2023-05-16 | yes | yes |
| 512-255 | AT&T | AUSTIN | – | – | yes |
| 512-256 | Bandwidth | KYLE | 2012-02-17 | yes | yes |
| 512-257 | AT&T | AUSTIN | – | – | yes |
| 512-258 | AT&T | AUSTIN | – | – | yes |
| 512-259 | AT&T | LEANDER | – | – | yes |
| 512-260 | AT&T | LEANDER | – | – | yes |
| 512-261 | AT&T | AUSTIN | – | – | yes |
| 512-262 | Frontier | KYLE | – | yes | yes |
| 512-263 | AT&T | AUSTIN | – | – | yes |
| 512-264 | AT&T | AUSTIN | – | yes | yes |
| 512-265 | Lumen | BURNET | 2011-04-20 | yes | yes |
| 512-266 | AT&T | AUSTIN | – | – | yes |
| 512-267 | AT&T | AUSTIN | – | – | yes |
| 512-268 | Frontier | KYLE | – | yes | yes |
| 512-269 | T-Mobile | TAYLOR | 2002-01-31 | yes | yes |
| 512-270 | Lumen | AUSTIN | 2013-03-27 | yes | yes |
| 512-271 | Lumen | AUSTIN | – | yes | yes |
| 512-272 | AT&T | AUSTIN | – | – | yes |
| 512-273 | Frontier | MCDADE | – | yes | yes |
| 512-274 | Spok | JARRELL | 2001-03-26 | – | yes |
| 512-275 | Verizon | AUSTIN | – | yes | yes |
| 512-276 | AT&T | AUSTIN | – | yes | yes |
| 512-277 | Telnyx | BERTRAM | – | yes | yes |
| 512-278 | AT&T | AUSTIN | – | – | yes |
| 512-279 | Lumen | AUSTIN | – | – | yes |
| 512-280 | AT&T | AUSTIN | – | – | yes |
| 512-281 | AT&T | ELGIN | – | yes | yes |
| 512-282 | AT&T | AUSTIN | – | – | yes |
| 512-283 | AT&T | AUSTIN | – | – | yes |
| 512-284 | AT&T | AUSTIN | – | yes | yes |
| 512-285 | AT&T | ELGIN | – | yes | yes |
| 512-286 | AT&T | AUSTIN | 2001-05-22 | – | yes |
| 512-287 | T-Mobile | AUSTIN | 2006-11-21 | yes | yes |
| 512-288 | AT&T | AUSTIN | – | – | yes |
| 512-289 | AT&T | AUSTIN | 2001-10-02 | – | yes |
| 512-290 | T-Mobile | ROCKDALE | 2006-12-15 | yes | yes |
| 512-291 | AT&T | AUSTIN | – | yes | yes |
| 512-292 | AT&T | AUSTIN | – | – | yes |
| 512-293 | T-Mobile | AUSTIN | – | – | yes |
| 512-294 | T-Mobile | AUSTIN | – | yes | yes |
| 512-295 | Frontier | BUDA | – | yes | yes |
| 512-296 | T-Mobile | AUSTIN | – | yes | yes |
| 512-297 | T-Mobile | AUSTIN | – | yes | yes |
| 512-298 | AT&T | AUSTIN | 2011-06-21 | yes | yes |
| 512-299 | Onvoy | AUSTIN | – | yes | yes |
| 512-300 | Charter | AUSTIN | – | yes | yes |
| 512-301 | AT&T | AUSTIN | – | yes | yes |
| 512-302 | AT&T | AUSTIN | – | – | yes |
| 512-303 | AT&T | BASTROP | – | – | yes |
| 512-304 | AT&T | BASTROP | – | – | yes |
| 512-305 | AT&T | AUSTIN | – | yes | yes |
| 512-306 | AT&T | AUSTIN | – | – | yes |
| 512-307 | Spok | AUSTIN | – | – | yes |
| 512-308 | AT&T | BASTROP | – | yes | yes |
| 512-309 | Charter | TAYLOR | – | yes | yes |
| 512-310 | AT&T | AUSTIN | – | – | yes |
| 512-312 | Frontier | BUDA | – | yes | yes |
| 512-313 | Lumen | AUSTIN | 2006-12-22 | yes | yes |
| 512-314 | AT&T | AUSTIN | – | yes | yes |
| 512-315 | AT&T | AUSTIN | – | – | yes |
| 512-316 | AT&T | GEORGETOWN | 2022-05-13 | yes | yes |
| 512-317 | AT&T | AUSTIN | 2007-02-14 | yes | yes |
| 512-318 | Verizon | AUSTIN | 2009-04-03 | yes | yes |
| 512-319 | AT&T | AUSTIN | 2011-10-05 | yes | yes |
| 512-320 | AT&T | AUSTIN | – | – | yes |
| 512-321 | AT&T | BASTROP | – | – | yes |
| 512-322 | AT&T | AUSTIN | – | – | yes |
| 512-323 | AT&T | AUSTIN | – | – | yes |
| 512-324 | AT&T | AUSTIN | – | – | yes |
| 512-325 | Onvoy | LEANDER | 2023-07-28 | yes | yes |
| 512-326 | AT&T | AUSTIN | – | – | yes |
| 512-327 | AT&T | AUSTIN | – | – | yes |
| 512-328 | AT&T | AUSTIN | – | – | yes |
| 512-329 | AT&T | AUSTIN | – | – | yes |
| 512-330 | AT&T | AUSTIN | – | yes | yes |
| 512-331 | AT&T | AUSTIN | – | – | yes |
| 512-332 | AT&T | BASTROP | – | yes | yes |
| 512-333 | USFON, INC. - TX | AUSTIN | 2010-05-12 | yes | yes |
| 512-334 | Lumen | AUSTIN | – | yes | yes |
| 512-335 | AT&T | AUSTIN | – | – | yes |
| 512-336 | AT&T | AUSTIN | – | yes | yes |
| 512-337 | AT&T | LEANDER | 2006-01-16 | yes | yes |
| 512-338 | AT&T | AUSTIN | – | – | yes |
| 512-339 | AT&T | AUSTIN | – | – | yes |
| 512-340 | AT&T | AUSTIN | – | – | yes |
| 512-341 | AT&T | AUSTIN | – | – | yes |
| 512-342 | AT&T | AUSTIN | – | – | yes |
| 512-343 | AT&T | AUSTIN | – | – | yes |
| 512-344 | AT&T | AUSTIN | – | yes | yes |
| 512-345 | AT&T | AUSTIN | – | – | yes |
| 512-346 | AT&T | AUSTIN | – | – | yes |
| 512-347 | AT&T | AUSTIN | – | – | yes |
| 512-348 | Verizon | AUSTIN | 2011-05-18 | yes | yes |
| 512-349 | AT&T | AUSTIN | – | – | yes |
| 512-350 | T-Mobile | AUSTIN | – | yes | yes |
| 512-351 | Lumen | AUSTIN | – | yes | yes |
| 512-352 | AT&T | TAYLOR | – | yes | yes |
| 512-353 | Brightspeed | SAN MARCOS | – | – | yes |
| 512-354 | AT&T | AUSTIN | 2009-12-28 | yes | yes |
| 512-355 | Frontier | BERTRAM | – | yes | yes |
| 512-356 | AT&T | AUSTIN | – | yes | yes |
| 512-357 | Frontier | MARTINDALE | – | yes | yes |
| 512-358 | AT&T | AUSTIN | – | yes | yes |
| 512-359 | AT&T | LOCKHART | 2010-01-11 | yes | yes |
| 512-360 | AT&T | SMITHVILLE | – | yes | yes |
| 512-361 | Charter | BUDA | 2014-10-24 | yes | yes |
| 512-362 | Verizon | AUSTIN | 2011-06-22 | yes | yes |
| 512-363 | AT&T | AUSTIN | – | yes | yes |
| 512-364 | Verizon | AUSTIN | 2007-09-06 | yes | yes |
| 512-365 | AT&T | TAYLOR | – | yes | yes |
| 512-366 | AT&T | AUSTIN | – | yes | yes |
| 512-367 | AT&T | AUSTIN | – | yes | yes |
| 512-368 | AT&T | AUSTIN | 2010-02-04 | yes | yes |
| 512-369 | AT&T | AUSTIN | – | yes | yes |
| 512-370 | AT&T | AUSTIN | – | – | yes |
| 512-371 | AT&T | AUSTIN | – | yes | yes |
| 512-372 | AT&T | AUSTIN | – | – | yes |
| 512-373 | AT&T | AUSTIN | – | yes | yes |
| 512-374 | AT&T | AUSTIN | – | – | yes |
| 512-375 | T-Mobile | AUSTIN | 2013-06-20 | yes | yes |
| 512-376 | AT&T | LOCKHART | – | yes | yes |
| 512-377 | AT&T | AUSTIN | – | yes | yes |
| 512-378 | AT&T | AUSTIN | – | yes | yes |
| 512-379 | AT&T | LEANDER | – | yes | yes |
| 512-380 | AT&T | AUSTIN | – | yes | yes |
| 512-381 | TPx | AUSTIN | – | – | yes |
| 512-382 | AT&T | AUSTIN | – | yes | yes |
| 512-383 | AT&T | AUSTIN | – | yes | yes |
| 512-384 | Verizon | AUSTIN | – | yes | yes |
| 512-385 | AT&T | AUSTIN | – | – | yes |
| 512-386 | AT&T | AUSTIN | – | yes | yes |
| 512-387 | Bandwidth | AUSTIN | 2013-11-07 | yes | yes |
| 512-388 | AT&T | AUSTIN | – | – | yes |
| 512-389 | AT&T | AUSTIN | – | – | yes |
| 512-390 | AT&T | AUSTIN | – | – | yes |
| 512-391 | AT&T | AUSTIN | – | yes | yes |
| 512-392 | Brightspeed | SAN MARCOS | – | – | yes |
| 512-393 | Brightspeed | SAN MARCOS | – | yes | yes |
| 512-394 | AT&T | AUSTIN | – | yes | yes |
| 512-395 | Brightspeed | SAN MARCOS | – | yes | yes |
| 512-396 | Brightspeed | SAN MARCOS | – | – | yes |
| 512-397 | AT&T | AUSTIN | – | – | yes |
| 512-398 | AT&T | LOCKHART | – | – | yes |
| 512-399 | Peerless | THORNDTHRL | 2014-05-27 | yes | yes |
| 512-400 | T-Mobile | BUDA | – | yes | yes |
| 512-401 | AT&T | AUSTIN | – | yes | yes |
| 512-402 | AT&T | AUSTIN | – | yes | yes |
| 512-403 | AT&T | AUSTIN | – | – | yes |
| 512-404 | AT&T | AUSTIN | – | – | yes |
| 512-405 | Frontier | KYLE | – | – | yes |
| 512-406 | AT&T | AUSTIN | – | yes | yes |
| 512-407 | AT&T | AUSTIN | – | – | yes |
| 512-408 | Brightspeed | SAN MARCOS | – | – | yes |
| 512-409 | Lumen | BASTROP | 2015-02-17 | yes | yes |
| 512-410 | Verizon | AUSTIN | 2008-01-07 | yes | yes |
| 512-412 | AT&T | BASTROP | 2009-01-05 | yes | yes |
| 512-413 | AT&T | AUSTIN | – | – | yes |
| 512-414 | AT&T | AUSTIN | – | – | yes |
| 512-415 | AT&T | AUSTIN | – | – | yes |
| 512-416 | AT&T | AUSTIN | – | yes | yes |
| 512-417 | Verizon | AUSTIN | – | yes | yes |
| 512-418 | AT&T | AUSTIN | – | yes | yes |
| 512-419 | AT&T | AUSTIN | – | yes | yes |
| 512-420 | AT&T | AUSTIN | – | yes | yes |
| 512-421 | AT&T | AUSTIN | – | – | yes |
| 512-422 | AT&T | AUSTIN | – | – | yes |
| 512-423 | AT&T | AUSTIN | – | – | yes |
| 512-424 | AT&T | AUSTIN | – | yes | yes |
| 512-425 | AT&T | AUSTIN | – | yes | yes |
| 512-426 | AT&T | AUSTIN | – | – | yes |
| 512-427 | AT&T | AUSTIN | – | – | yes |
| 512-428 | AT&T | AUSTIN | – | yes | yes |
| 512-429 | Verizon | ROCKDALE | – | yes | yes |
| 512-430 | AT&T | ROCKDALE | – | yes | yes |
| 512-431 | AT&T | AUSTIN | – | – | yes |
| 512-432 | AT&T | AUSTIN | – | yes | yes |
| 512-433 | AT&T | AUSTIN | – | yes | yes |
| 512-434 | AT&T | AUSTIN | – | yes | yes |
| 512-435 | AT&T | AUSTIN | – | yes | yes |
| 512-436 | AT&T | AUSTIN | – | yes | yes |
| 512-437 | AT&T | AUSTIN | – | yes | yes |
| 512-438 | AT&T | AUSTIN | – | yes | yes |
| 512-439 | Lumen | AUSTIN | – | yes | yes |
| 512-440 | AT&T | AUSTIN | – | – | yes |
| 512-441 | AT&T | AUSTIN | – | – | yes |
| 512-442 | AT&T | AUSTIN | – | – | yes |
| 512-443 | AT&T | AUSTIN | – | – | yes |
| 512-444 | AT&T | AUSTIN | – | – | yes |
| 512-445 | AT&T | AUSTIN | – | – | yes |
| 512-446 | AT&T | ROCKDALE | – | yes | yes |
| 512-447 | AT&T | AUSTIN | – | – | yes |
| 512-448 | AT&T | AUSTIN | – | – | yes |
| 512-449 | Frontier | KYLE | – | – | yes |
| 512-450 | AT&T | AUSTIN | – | yes | yes |
| 512-451 | AT&T | AUSTIN | – | – | yes |
| 512-452 | AT&T | AUSTIN | – | – | yes |
| 512-453 | AT&T | AUSTIN | – | – | yes |
| 512-454 | AT&T | AUSTIN | – | – | yes |
| 512-455 | Brightspeed | MILANO | – | yes | yes |
| 512-456 | Lumen | LEANDER | – | yes | yes |
| 512-457 | AT&T | AUSTIN | – | yes | yes |
| 512-458 | AT&T | AUSTIN | – | yes | yes |
| 512-459 | AT&T | AUSTIN | – | – | yes |
| 512-460 | AT&T | AUSTIN | – | yes | yes |
| 512-461 | AT&T | AUSTIN | – | – | yes |
| 512-462 | AT&T | AUSTIN | – | – | yes |
| 512-463 | AT&T | AUSTIN | – | – | yes |
| 512-464 | AT&T | AUSTIN | – | yes | yes |
| 512-465 | AT&T | AUSTIN | – | yes | yes |
| 512-466 | AT&T | AUSTIN | – | yes | yes |
| 512-467 | AT&T | AUSTIN | – | yes | yes |
| 512-468 | AT&T | AUSTIN | – | – | yes |
| 512-469 | AT&T | AUSTIN | – | – | yes |
| 512-470 | Verizon | AUSTIN | – | – | yes |
| 512-471 | AT&T | AUSTIN | – | – | yes |
| 512-472 | AT&T | AUSTIN | – | – | yes |
| 512-473 | AT&T | AUSTIN | – | yes | yes |
| 512-474 | AT&T | AUSTIN | – | – | yes |
| 512-475 | AT&T | AUSTIN | – | yes | yes |
| 512-476 | AT&T | AUSTIN | – | – | yes |
| 512-477 | AT&T | AUSTIN | – | – | yes |
| 512-478 | AT&T | AUSTIN | – | – | yes |
| 512-479 | AT&T | AUSTIN | – | – | yes |
| 512-480 | AT&T | AUSTIN | – | – | yes |
| 512-481 | AT&T | AUSTIN | – | yes | yes |
| 512-482 | AT&T | AUSTIN | – | – | yes |
| 512-483 | AT&T | AUSTIN | – | yes | yes |
| 512-484 | AT&T | AUSTIN | – | yes | yes |
| 512-485 | Lumen | AUSTIN | – | – | yes |
| 512-486 | AT&T | AUSTIN | – | yes | yes |
| 512-487 | AT&T | AUSTIN | – | yes | yes |
| 512-488 | Frontier | FENTRESS | – | yes | yes |
| 512-489 | Frontier | BRIGGS | – | yes | yes |
| 512-490 | AT&T | AUSTIN | – | – | yes |
| 512-491 | AT&T | AUSTIN | – | – | yes |
| 512-492 | AT&T | AUSTIN | – | yes | yes |
| 512-493 | Lumen | AUSTIN | – | – | yes |
| 512-494 | AT&T | AUSTIN | – | yes | yes |
| 512-495 | AT&T | AUSTIN | – | – | yes |
| 512-496 | AT&T | AUSTIN | – | – | yes |
| 512-497 | AT&T | AUSTIN | – | – | yes |
| 512-498 | Lumen | AUSTIN | – | – | yes |
| 512-499 | AT&T | AUSTIN | – | yes | yes |
| 512-500 | Lumen | AUSTIN | 2022-07-28 | yes | yes |
| 512-501 | Onvoy | AUSTIN | 2007-09-19 | yes | yes |
| 512-502 | AT&T | AUSTIN | – | yes | yes |
| 512-503 | Onvoy | AUSTIN | 2022-04-28 | yes | yes |
| 512-504 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | KYLE | – | yes | yes |
| 512-505 | AT&T | AUSTIN | – | yes | yes |
| 512-506 | AT&T | AUSTIN | – | yes | yes |
| 512-507 | T-Mobile | AUSTIN | – | yes | yes |
| 512-508 | T-Mobile | GEORGETOWN | – | yes | yes |
| 512-509 | AT&T | GEORGETOWN | – | yes | yes |
| 512-510 | AT&T | XXXXXXXXXX | – | – | yes |
| 512-512 | USFON, INC. - TX | AUSTIN | 2023-01-06 | yes | yes |
| 512-513 | Lumen | AUSTIN | 2008-09-02 | yes | yes |
| 512-514 | AT&T | AUSTIN | – | yes | yes |
| 512-515 | AT&T | LIBERTY HL | – | yes | yes |
| 512-516 | Verizon | AUSTIN | 2010-02-18 | yes | yes |
| 512-517 | AT&T | AUSTIN | – | – | yes |
| 512-518 | Bandwidth | AUSTIN | – | yes | yes |
| 512-519 | Lumen | AUSTIN | – | yes | yes |
| 512-520 | Charter | AUSTIN | – | yes | yes |
| 512-521 | T-Mobile | BASTROP | – | yes | yes |
| 512-522 | Bandwidth | AUSTIN | 2010-02-24 | yes | yes |
| 512-523 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | BUDA | – | yes | yes |
| 512-524 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | AUSTIN | – | yes | yes |
| 512-525 | T-Mobile | LAMPASAS | – | yes | yes |
| 512-526 | AT&T | AUSTIN | 2008-03-18 | yes | yes |
| 512-527 | AT&T | AUSTIN | – | yes | yes |
| 512-528 | AT&T | LEANDER | – | yes | yes |
| 512-529 | Verizon | AUSTIN | 2007-04-03 | yes | yes |
| 512-530 | Lumen | AUSTIN | – | – | yes |
| 512-531 | Lumen | AUSTIN | – | yes | yes |
| 512-532 | Lumen | AUSTIN | – | – | yes |
| 512-533 | Lumen | AUSTIN | – | yes | yes |
| 512-534 | Verizon | AUSTIN | 2010-07-19 | yes | yes |
| 512-535 | AT&T | AUSTIN | 2005-04-22 | yes | yes |
| 512-536 | AT&T | AUSTIN | – | yes | yes |
| 512-537 | Bandwidth | AUSTIN | 2008-11-21 | yes | yes |
| 512-538 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | AUSTIN | – | yes | yes |
| 512-539 | Verizon | AUSTIN | 2007-10-11 | yes | yes |
| 512-540 | AT&T | LAMPASAS | – | yes | yes |
| 512-541 | Verizon | AUSTIN | 2008-03-26 | yes | yes |
| 512-542 | AT&T | AUSTIN | – | yes | yes |
| 512-543 | Onvoy | ROCKDALE | – | yes | yes |
| 512-544 | Lumen | AUSTIN | 2005-03-01 | yes | yes |
| 512-545 | AT&T | BASTROP | – | yes | yes |
| 512-546 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | DALE/LTNSP | – | yes | yes |
| 512-547 | AT&T | AUSTIN | 2008-09-15 | yes | yes |
| 512-548 | Charter | LIBERTY HL | – | yes | yes |
| 512-549 | AT&T | BASTROP | 2009-06-16 | yes | yes |
| 512-550 | AT&T | AUSTIN | 2010-07-16 | yes | yes |
| 512-551 | Lumen | AUSTIN | 2008-10-22 | yes | yes |
| 512-552 | AT&T | AUSTIN | 2006-04-17 | yes | yes |
| 512-553 | Lumen | BURNET | 2002-01-02 | yes | yes |
| 512-554 | T-Mobile | AUSTIN | – | – | yes |
| 512-556 | AT&T | LAMPASAS | – | – | yes |
| 512-557 | Verizon | SAN MARCOS | – | – | yes |
| 512-558 | Brightspeed | SAN MARCOS | – | yes | yes |
| 512-559 | Frontier | DALE/LTNSP | – | yes | yes |
| 512-560 | AT&T | AUSTIN | – | – | yes |
| 512-561 | Lumen | MILANO | 2002-08-26 | – | yes |
| 512-562 | Lumen | LOMETA | 2002-08-26 | – | yes |
| 512-563 | T-Mobile | AUSTIN | 2001-02-27 | yes | yes |
| 512-564 | AT&T | LAMPASAS | 2002-10-31 | yes | yes |
| 512-565 | AT&T | AUSTIN | 2001-01-25 | – | yes |
| 512-566 | T-Mobile | LAMPASAS | 2002-06-05 | yes | yes |
| 512-567 | Verizon | AUSTIN | – | – | yes |
| 512-568 | AT&T | AUSTIN | 2009-03-03 | yes | yes |
| 512-569 | Verizon | AUSTIN | – | – | yes |
| 512-570 | Lumen | AUSTIN | 2008-05-30 | yes | yes |
| 512-571 | Verizon | AUSTIN | 2011-09-19 | yes | yes |
| 512-572 | Onvoy | BERTRAM | 2014-06-18 | yes | yes |
| 512-573 | T-Mobile | AUSTIN | – | yes | yes |
| 512-574 | AT&T | AUSTIN | 2010-02-23 | yes | yes |
| 512-575 | AT&T | SMITHVILLE | 2011-09-23 | yes | yes |
| 512-576 | T-Mobile | AUSTIN | – | – | yes |
| 512-577 | T-Mobile | AUSTIN | 2002-04-04 | – | yes |
| 512-578 | AT&T | AUSTIN | 2010-08-04 | yes | yes |
| 512-579 | Lumen | AUSTIN | 2007-06-26 | yes | yes |
| 512-580 | Charter | AUSTIN | 2014-10-16 | yes | yes |
| 512-581 | AT&T | BASTROP | – | yes | yes |
| 512-582 | Onvoy | AUSTIN | – | yes | yes |
| 512-583 | Lumen | AUSTIN | – | – | yes |
| 512-584 | T-Mobile | AUSTIN | 2006-08-31 | yes | yes |
| 512-585 | Verizon | AUSTIN | – | – | yes |
| 512-586 | T-Mobile | AUSTIN | 2001-01-08 | yes | yes |
| 512-587 | T-Mobile | AUSTIN | 2001-04-24 | yes | yes |
| 512-588 | AT&T | BURNET | 2002-04-29 | yes | yes |
| 512-589 | T-Mobile | AUSTIN | – | yes | yes |
| 512-590 | Verizon | AUSTIN | 2006-04-27 | yes | yes |
| 512-591 | AT&T | GEORGETOWN | – | yes | yes |
| 512-592 | Verizon | AUSTIN | 2007-07-19 | yes | yes |
| 512-593 | Bandwidth | AUSTIN | 2013-04-25 | yes | yes |
| 512-594 | AT&T | AUSTIN | 2001-08-10 | – | yes |
| 512-595 | Lumen | TAYLOR | 2001-12-11 | yes | yes |
| 512-596 | AT&T | AUSTIN | 2013-10-25 | yes | yes |
| 512-597 | Lumen | AUSTIN | – | yes | yes |
| 512-598 | CSC VOICE, LLC | JARRELL | 2014-02-03 | yes | yes |
| 512-599 | Onvoy | AUSTIN | – | yes | yes |
| 512-600 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | AUSTIN | – | – | yes |
| 512-601 | Frontier | DALE/LTNSP | – | yes | yes |
| 512-602 | AT&T | AUSTIN | – | – | yes |
| 512-603 | Spok | AUSTIN | – | – | yes |
| 512-604 | Spok | AUSTIN | – | – | yes |
| 512-605 | Verizon | AUSTIN | 2012-02-07 | yes | yes |
| 512-606 | Spok | AUSTIN | – | – | yes |
| 512-607 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | DRIPPNGSPG | – | yes | yes |
| 512-608 | AT&T | AUSTIN | – | yes | yes |
| 512-609 | AT&T | AUSTIN | – | yes | yes |
| 512-610 | Onvoy | AUSTIN | – | – | yes |
| 512-612 | LEAP TELECOM, LLC | AUSTIN | 2024-11-01 | yes | yes |
| 512-613 | Spok | AUSTIN | – | – | yes |
| 512-614 | Charter | AUSTIN | 2010-09-20 | yes | yes |
| 512-615 | Onvoy | AUSTIN | – | – | yes |
| 512-616 | Onvoy | LEANDER | – | – | yes |
| 512-617 | Onvoy | AUSTIN | – | – | yes |
| 512-618 | AT&T | SAN MARCOS | – | yes | yes |
| 512-619 | T-Mobile | AUSTIN | 2001-04-24 | yes | yes |
| 512-620 | AT&T | LOCKHART | – | yes | yes |
| 512-621 | Verizon | AUSTIN | 2013-05-31 | yes | yes |
| 512-622 | Spok | AUSTIN | – | – | yes |
| 512-623 | AT&T | AUSTIN | – | yes | yes |
| 512-624 | Spok | AUSTIN | – | – | yes |
| 512-625 | Spok | AUSTIN | – | – | yes |
| 512-626 | Verizon | AUSTIN | – | – | yes |
| 512-627 | Verizon | AUSTIN | – | – | yes |
| 512-628 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | AUSTIN | – | yes | yes |
| 512-629 | AT&T | BASTROP | 2006-01-05 | yes | yes |
| 512-630 | T-Mobile | GEORGETOWN | – | yes | yes |
| 512-631 | Onvoy | AUSTIN | 2021-06-17 | yes | yes |
| 512-632 | AT&T | AUSTIN | – | – | yes |
| 512-633 | AT&T | AUSTIN | – | – | yes |
| 512-634 | AT&T | AUSTIN | – | yes | yes |
| 512-635 | T-Mobile | GEORGETOWN | – | yes | yes |
| 512-636 | Verizon | AUSTIN | – | – | yes |
| 512-637 | AUSTIN BESTLINE COMPANY | AUSTIN | – | – | yes |
| 512-638 | Verizon | AUSTIN | – | yes | yes |
| 512-639 | Verizon | GEORGETOWN | – | yes | yes |
| 512-640 | Lumen | AUSTIN | 2014-07-03 | yes | yes |
| 512-641 | Lumen | ADAMSVILLE | – | yes | yes |
| 512-642 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | HUTTO | – | yes | yes |
| 512-643 | Bandwidth | AUSTIN | 2014-07-02 | yes | yes |
| 512-644 | T-Mobile | SAN MARCOS | – | yes | yes |
| 512-645 | Verizon | AUSTIN | 2014-09-10 | yes | yes |
| 512-646 | Lumen | AUSTIN | – | yes | yes |
| 512-647 | Lumen | AUSTIN | – | yes | yes |
| 512-648 | Peerless | WIMBERLEY | 2014-05-27 | yes | yes |
| 512-649 | AT&T | AUSTIN | – | yes | yes |
| 512-650 | T-Mobile | AUSTIN | 2007-12-05 | yes | yes |
| 512-651 | Verizon | AUSTIN | – | – | yes |
| 512-652 | Verizon | AUSTIN | – | yes | yes |
| 512-653 | T-Mobile | AUSTIN | – | yes | yes |
| 512-654 | AT&T | AUSTIN | 2012-04-05 | yes | yes |
| 512-655 | AT&T | AUSTIN | 2012-04-05 | yes | yes |
| 512-656 | AT&T | AUSTIN | – | – | yes |
| 512-657 | AT&T | AUSTIN | – | – | yes |
| 512-658 | AT&T | AUSTIN | – | – | yes |
| 512-659 | T-Mobile | AUSTIN | 2001-04-24 | yes | yes |
| 512-660 | AT&T | AUSTIN | 2011-03-25 | yes | yes |
| 512-661 | Verizon | ELGIN | – | yes | yes |
| 512-662 | Bandwidth | AUSTIN | 2006-09-18 | yes | yes |
| 512-663 | Verizon | AUSTIN | – | – | yes |
| 512-664 | Lumen | AUSTIN | 2004-11-04 | yes | yes |
| 512-665 | T-Mobile | SAN MARCOS | – | – | yes |
| 512-666 | EVOLVE CELLULAR, INC. | AUSTIN | 2011-03-21 | yes | yes |
| 512-667 | Verizon | SAN MARCOS | – | yes | yes |
| 512-668 | Charter | LOCKHART | 2005-04-21 | yes | yes |
| 512-669 | AT&T | AUSTIN | – | yes | yes |
| 512-670 | AT&T | AUSTIN | – | yes | yes |
| 512-671 | AT&T | AUSTIN | – | yes | yes |
| 512-672 | AT&T | AUSTIN | – | yes | yes |
| 512-673 | AT&T | AUSTIN | – | yes | yes |
| 512-674 | AT&T | AUSTIN | – | yes | yes |
| 512-675 | Bandwidth | BUCHANNDAM | 2014-04-17 | yes | yes |
| 512-676 | AT&T | AUSTIN | 2013-11-22 | yes | yes |
| 512-677 | T-Mobile | GEORGETOWN | – | yes | yes |
| 512-678 | TPx | BASTROP | – | yes | yes |
| 512-679 | T-Mobile | AUSTIN | 2014-06-30 | yes | yes |
| 512-680 | T-Mobile | AUSTIN | – | yes | yes |
| 512-681 | Lumen | AUSTIN | – | – | yes |
| 512-682 | Lumen | AUSTIN | – | yes | yes |
| 512-683 | Lumen | AUSTIN | – | – | yes |
| 512-684 | Lumen | AUSTIN | – | – | yes |
| 512-685 | Lumen | AUSTIN | – | – | yes |
| 512-686 | Lumen | GEORGETOWN | – | yes | yes |
| 512-687 | Windstream | AUSTIN | – | yes | yes |
| 512-688 | CSC VOICE, LLC | GEORGETOWN | 2013-11-05 | yes | yes |
| 512-689 | T-Mobile | AUSTIN | 2001-04-24 | yes | yes |
| 512-690 | AT&T | LEANDER | – | yes | yes |
| 512-691 | AT&T | AUSTIN | – | yes | yes |
| 512-692 | Verizon | AUSTIN | – | yes | yes |
| 512-693 | AT&T | AUSTIN | – | yes | yes |
| 512-694 | AT&T | AUSTIN | – | – | yes |
| 512-695 | AT&T | AUSTIN | – | – | yes |
| 512-696 | AT&T | AUSTIN | 2006-01-05 | yes | yes |
| 512-697 | Verizon | AUSTIN | – | yes | yes |
| 512-698 | T-Mobile | AUSTIN | – | – | yes |
| 512-699 | T-Mobile | AUSTIN | – | yes | yes |
| 512-701 | AT&T | AUSTIN | 2009-03-16 | yes | yes |
| 512-702 | TPx | AUSTIN | 2022-05-24 | yes | yes |
| 512-703 | AT&T | AUSTIN | – | yes | yes |
| 512-704 | AT&T | AUSTIN | – | yes | yes |
| 512-705 | AT&T | AUSTIN | 2008-07-25 | yes | yes |
| 512-706 | AT&T | AUSTIN | – | yes | yes |
| 512-707 | AT&T | AUSTIN | – | yes | yes |
| 512-708 | AT&T | AUSTIN | – | yes | yes |
| 512-709 | T-Mobile | AUSTIN | 2006-06-20 | yes | yes |
| 512-710 | Bandwidth | AUSTIN | 2014-10-06 | yes | yes |
| 512-712 | AT&T | AUSTIN | – | yes | yes |
| 512-713 | Lumen | GEORGETOWN | 2015-03-10 | yes | yes |
| 512-714 | AT&T | ADAMSVILLE | 2009-12-03 | yes | yes |
| 512-715 | Frontier | BURNET | – | yes | yes |
| 512-716 | AT&T | AUSTIN | – | yes | yes |
| 512-717 | Peerless | AUSTIN | 2013-03-01 | yes | yes |
| 512-718 | AT&T | BASTROP | – | yes | yes |
| 512-719 | AT&T | AUSTIN | – | – | yes |
| 512-720 | Verizon | AUSTIN | 2012-10-10 | yes | yes |
| 512-721 | Verizon | AUSTIN | – | yes | yes |
| 512-722 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | WIMBERLEY | – | yes | yes |
| 512-723 | Lumen | AUSTIN | – | – | yes |
| 512-724 | Lumen | AUSTIN | – | – | yes |
| 512-725 | Lumen | AUSTIN | – | – | yes |
| 512-726 | Verizon | AUSTIN | – | – | yes |
| 512-727 | Lumen | AUSTIN | 2004-12-13 | yes | yes |
| 512-728 | Lumen | AUSTIN | – | – | yes |
| 512-729 | Onvoy | LOCKHART | – | yes | yes |
| 512-730 | AT&T | AUSTIN | – | yes | yes |
| 512-731 | T-Mobile | AUSTIN | – | yes | yes |
| 512-732 | AT&T | AUSTIN | – | – | yes |
| 512-733 | AT&T | AUSTIN | – | yes | yes |
| 512-734 | Verizon | LAMPASAS | – | yes | yes |
| 512-735 | TPx | AUSTIN | – | – | yes |
| 512-736 | T-Mobile | AUSTIN | – | – | yes |
| 512-737 | Onvoy | AUSTIN | 2023-08-23 | yes | yes |
| 512-738 | T-Mobile | SAN MARCOS | – | yes | yes |
| 512-739 | AT&T | AUSTIN | 2008-03-26 | yes | yes |
| 512-740 | T-Mobile | AUSTIN | – | yes | yes |
| 512-741 | AT&T | AUSTIN | – | – | yes |
| 512-742 | AT&T | AUSTIN | – | – | yes |
| 512-743 | T-Mobile | AUSTIN | – | yes | yes |
| 512-744 | Lumen | AUSTIN | – | yes | yes |
| 512-745 | Verizon | AUSTIN | 2006-07-25 | yes | yes |
| 512-746 | Frontier | JARRELL | – | yes | yes |
| 512-747 | Lumen | AUSTIN | 2005-02-08 | yes | yes |
| 512-748 | T-Mobile | AUSTIN | – | yes | yes |
| 512-749 | Verizon | SAN MARCOS | 2006-04-27 | yes | yes |
| 512-750 | AT&T | AUSTIN | – | – | yes |
| 512-751 | AT&T | AUSTIN | – | – | yes |
| 512-752 | Brightspeed | LOMETA | – | – | yes |
| 512-753 | Brightspeed | SAN MARCOS | – | yes | yes |
| 512-754 | Brightspeed | SAN MARCOS | – | – | yes |
| 512-755 | Verizon | BURNET | – | yes | yes |
| 512-756 | Frontier | BURNET | – | yes | yes |
| 512-757 | AT&T | SAN MARCOS | – | yes | yes |
| 512-758 | T-Mobile | AUSTIN | 2008-08-04 | yes | yes |
| 512-759 | Brightspeed | HUTTO | – | yes | yes |
| 512-760 | T-Mobile | ROCKDALE | – | yes | yes |
| 512-761 | AT&T | AUSTIN | 2009-06-05 | yes | yes |
| 512-762 | T-Mobile | AUSTIN | – | yes | yes |
| 512-763 | Frontier | GEORGETOWN | – | yes | yes |
| 512-764 | Frontier | DALE/LTNSP | – | yes | yes |
| 512-765 | AT&T | AUSTIN | 2011-07-05 | yes | yes |
| 512-766 | Bandwidth | AUSTIN | 2014-11-20 | yes | yes |
| 512-767 | T-Mobile | AUSTIN | – | yes | yes |
| 512-768 | Onvoy | ADAMSVILLE | – | yes | yes |
| 512-769 | T-Mobile | AUSTIN | 2001-11-27 | yes | yes |
| 512-770 | T-Mobile | AUSTIN | – | yes | yes |
| 512-771 | AT&T | AUSTIN | – | – | yes |
| 512-772 | Lumen | BASTROP | – | yes | yes |
| 512-773 | T-Mobile | AUSTIN | – | yes | yes |
| 512-774 | Bandwidth | AUSTIN | 2012-06-12 | yes | yes |
| 512-775 | T-Mobile | AUSTIN | – | – | yes |
| 512-776 | Lumen | AUSTIN | 2005-03-23 | yes | yes |
| 512-777 | EVOLVE CELLULAR, INC. | AUSTIN | 2009-05-27 | yes | yes |
| 512-778 | AT&T | LIBERTY HL | – | yes | yes |
| 512-779 | T-Mobile | AUSTIN | – | yes | yes |
| 512-780 | Lumen | AUSTIN | 2007-06-18 | yes | yes |
| 512-781 | Lumen | SAN MARCOS | 2012-11-15 | yes | yes |
| 512-782 | AT&T | AUSTIN | – | yes | yes |
| 512-783 | T-Mobile | AUSTIN | 2014-09-18 | yes | yes |
| 512-784 | T-Mobile | AUSTIN | – | yes | yes |
| 512-785 | T-Mobile | AUSTIN | – | – | yes |
| 512-786 | T-Mobile | AUSTIN | 2001-10-02 | yes | yes |
| 512-787 | T-Mobile | SAN MARCOS | – | yes | yes |
| 512-788 | Lumen | AUSTIN | 2005-08-03 | yes | yes |
| 512-789 | T-Mobile | AUSTIN | – | yes | yes |
| 512-790 | Bandwidth | BURNET | 2014-09-15 | yes | yes |
| 512-791 | T-Mobile | AUSTIN | – | yes | yes |
| 512-792 | Lumen | AUSTIN | 2014-08-25 | yes | yes |
| 512-793 | Frontier | BUCHANNDAM | – | yes | yes |
| 512-794 | AT&T | AUSTIN | – | – | yes |
| 512-795 | AT&T | AUSTIN | – | yes | yes |
| 512-796 | T-Mobile | AUSTIN | – | yes | yes |
| 512-797 | T-Mobile | AUSTIN | – | yes | yes |
| 512-798 | MATRIX TELECOM, LLC. S/I/I TNCI - TX | SMITHVILLE | – | yes | yes |
| 512-799 | T-Mobile | AUSTIN | – | yes | yes |
| 512-800 | Verizon | AUSTIN | 2010-11-04 | yes | yes |
| 512-801 | T-Mobile | AUSTIN | – | yes | yes |
| 512-802 | Spok | AUSTIN | – | – | yes |
| 512-803 | AT&T | AUSTIN | 2006-04-17 | yes | yes |
| 512-804 | AT&T | AUSTIN | – | yes | yes |
| 512-805 | Brightspeed | SAN MARCOS | – | yes | yes |
| 512-806 | Lumen | AUSTIN | 2014-10-21 | yes | yes |
| 512-807 | Onvoy | AUSTIN | 2008-01-14 | yes | yes |
| 512-808 | Windstream | AUSTIN | 2012-02-10 | yes | yes |
| 512-809 | Verizon | AUSTIN | – | yes | yes |
| 512-810 | AT&T | AUSTIN | 2008-03-26 | yes | yes |
| 512-812 | Lumen | MILANO | 2005-02-14 | yes | yes |
| 512-813 | Verizon | AUSTIN | 2012-06-14 | yes | yes |
| 512-814 | AT&T | AUSTIN | 2008-01-25 | yes | yes |
| 512-815 | AT&T | AUSTIN | 2011-07-01 | yes | yes |
| 512-816 | Lumen | AUSTIN | 2008-12-17 | yes | yes |
| 512-817 | Onvoy | LEANDER | 2015-01-05 | yes | yes |
| 512-818 | AT&T | GEORGETOWN | – | – | yes |
| 512-819 | Frontier | GEORGETOWN | – | yes | yes |
| 512-820 | Verizon | AUSTIN | 2008-05-16 | yes | yes |
| 512-821 | AT&T | AUSTIN | – | – | yes |
| 512-822 | FOREMOST TELECOMMUNICATIONS CORPORATION - TX | AUSTIN | 2013-02-01 | yes | yes |
| 512-823 | AT&T | AUSTIN | – | yes | yes |
| 512-824 | MATRIX TELECOM, LLC. S/I/I TNCI - TX | TAYLOR | – | – | yes |
| 512-825 | T-Mobile | AUSTIN | – | – | yes |
| 512-826 | AT&T | AUSTIN | – | – | yes |
| 512-827 | Verizon | AUSTIN | – | yes | yes |
| 512-828 | AT&T | AUSTIN | – | yes | yes |
| 512-829 | AT&T | DRIPPNGSPG | – | yes | yes |
| 512-831 | Onvoy | AUSTIN | 2012-08-29 | yes | yes |
| 512-832 | AT&T | AUSTIN | – | – | yes |
| 512-833 | AT&T | AUSTIN | – | – | yes |
| 512-834 | AT&T | AUSTIN | – | – | yes |
| 512-835 | AT&T | AUSTIN | – | yes | yes |
| 512-836 | AT&T | AUSTIN | – | – | yes |
| 512-837 | AT&T | AUSTIN | – | – | yes |
| 512-838 | AT&T | AUSTIN | – | yes | yes |
| 512-839 | AT&T | AUSTIN | 2014-11-25 | yes | yes |
| 512-840 | Lumen | AUSTIN | 2014-08-19 | yes | yes |
| 512-841 | AT&T | AUSTIN | – | – | yes |
| 512-842 | Lumen | WIMBERLEY | – | yes | yes |
| 512-843 | T-Mobile | GEORGETOWN | – | yes | yes |
| 512-844 | T-Mobile | AUSTIN | – | yes | yes |
| 512-845 | T-Mobile | AUSTIN | – | yes | yes |
| 512-846 | Brightspeed | HUTTO | – | yes | yes |
| 512-847 | Frontier | WIMBERLEY | – | – | yes |
| 512-848 | T-Mobile | AUSTIN | – | yes | yes |
| 512-849 | Spok | AUSTIN | – | – | yes |
| 512-850 | Verizon | AUSTIN | 2007-11-29 | yes | yes |
| 512-851 | AT&T | AUSTIN | – | yes | yes |
| 512-852 | WESTEL, INC. - TX | AUSTIN | 2006-06-19 | yes | yes |
| 512-853 | Verizon | AUSTIN | – | yes | yes |
| 512-854 | AT&T | AUSTIN | – | yes | yes |
| 512-855 | AT&T | LOCKHART | 2002-03-25 | yes | yes |
| 512-856 | Frontier | COUPLAND | – | yes | yes |
| 512-857 | Lumen | AUSTIN | – | – | yes |
| 512-858 | Frontier | DRIPPNGSPG | – | yes | yes |
| 512-859 | Frontier | GRANGER | – | yes | yes |
| 512-860 | AT&T | AUSTIN | – | yes | yes |
| 512-861 | Onvoy | AUSTIN | – | yes | yes |
| 512-862 | Frontier | SANGABRIEL | – | yes | yes |
| 512-863 | Frontier | GEORGETOWN | – | – | yes |
| 512-864 | Frontier | GEORGETOWN | – | yes | yes |
| 512-865 | AT&T | AUSTIN | 2012-12-27 | yes | yes |
| 512-866 | Peerless | PAIGE | 2019-02-15 | yes | yes |
| 512-867 | AT&T | AUSTIN | – | yes | yes |
| 512-868 | Frontier | GEORGETOWN | – | yes | yes |
| 512-869 | Frontier | GEORGETOWN | – | yes | yes |
| 512-870 | AT&T | AUSTIN | – | yes | yes |
| 512-871 | AT&T | AUSTIN | 2018-11-26 | yes | yes |
| 512-872 | Lumen | AUSTIN | 2013-06-18 | yes | yes |
| 512-873 | AT&T | AUSTIN | – | – | yes |
| 512-874 | Lumen | AUSTIN | – | – | yes |
| 512-875 | Spok | AUSTIN | – | – | yes |
| 512-876 | T-Mobile | GEORGETOWN | – | yes | yes |
| 512-877 | Peerless | WIMBERLEY | 2004-04-30 | yes | yes |
| 512-878 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | SAN MARCOS | – | yes | yes |
| 512-879 | Lumen | AUSTIN | – | yes | yes |
| 512-880 | TPx | BASTROP | 2022-05-24 | yes | yes |
| 512-881 | Onvoy | LEANDER | 2022-05-04 | yes | yes |
| 512-882 | Onvoy | GEORGETOWN | 2022-05-04 | yes | yes |
| 512-883 | Peerless | JARRELL | 2004-06-10 | yes | yes |
| 512-884 | CSC WIRELESS, LLC | AUSTIN | 2019-04-01 | yes | yes |
| 512-885 | Onvoy | LOCKHART | 2022-05-04 | yes | yes |
| 512-886 | Bandwidth | BUCHANNDAM | 2019-02-14 | yes | yes |
| 512-887 | T-Mobile | GEORGETOWN | 2001-01-25 | yes | yes |
| 512-888 | Bandwidth | AUSTIN | 2004-03-30 | yes | yes |
| 512-889 | Charter | AUSTIN | 2022-04-29 | yes | yes |
| 512-890 | Peerless | BUCHANNDAM | 2004-02-26 | yes | yes |
| 512-891 | AT&T | AUSTIN | – | – | yes |
| 512-892 | AT&T | AUSTIN | – | – | yes |
| 512-893 | T-Mobile | AUSTIN | 2014-08-12 | yes | yes |
| 512-894 | Frontier | DRIPPNGSPG | – | yes | yes |
| 512-895 | AT&T | AUSTIN | – | yes | yes |
| 512-896 | Spok | AUSTIN | – | – | yes |
| 512-897 | AT&T | AUSTIN | 2006-08-02 | yes | yes |
| 512-898 | Frontier | THORNDTHRL | – | yes | yes |
| 512-899 | AT&T | AUSTIN | – | – | yes |
| 512-900 | Lumen | AUSTIN | 2010-12-02 | yes | yes |
| 512-901 | Lumen | AUSTIN | – | – | yes |
| 512-902 | AT&T | AUSTIN | 2006-09-22 | yes | yes |
| 512-903 | T-Mobile | AUSTIN | 2007-11-06 | yes | yes |
| 512-904 | Lumen | AUSTIN | 2006-08-22 | yes | yes |
| 512-905 | T-Mobile | AUSTIN | 2005-04-21 | yes | yes |
| 512-906 | Verizon | AUSTIN | 2006-08-25 | yes | yes |
| 512-907 | AT&T | AUSTIN | – | – | yes |
| 512-908 | AT&T | AUSTIN | – | – | yes |
| 512-909 | T-Mobile | AUSTIN | 2007-07-13 | yes | yes |
| 512-910 | T-Mobile | AUSTIN | 2012-09-06 | yes | yes |
| 512-912 | AT&T | AUSTIN | – | yes | yes |
| 512-913 | AT&T | AUSTIN | – | – | yes |
| 512-914 | AT&T | AUSTIN | – | – | yes |
| 512-915 | AT&T | AUSTIN | 2014-10-21 | yes | yes |
| 512-916 | AT&T | AUSTIN | – | – | yes |
| 512-917 | AT&T | AUSTIN | – | – | yes |
| 512-918 | AT&T | AUSTIN | – | – | yes |
| 512-919 | AT&T | AUSTIN | – | yes | yes |
| 512-920 | NUSO, LLC | AUSTIN | 2012-10-17 | yes | yes |
| 512-921 | AT&T | AUSTIN | – | yes | yes |
| 512-922 | AT&T | AUSTIN | – | – | yes |
| 512-923 | AT&T | AUSTIN | – | – | yes |
| 512-924 | AT&T | AUSTIN | – | – | yes |
| 512-925 | AT&T | AUSTIN | – | – | yes |
| 512-926 | AT&T | AUSTIN | – | – | yes |
| 512-927 | AT&T | AUSTIN | – | yes | yes |
| 512-928 | AT&T | AUSTIN | – | – | yes |
| 512-929 | AT&T | AUSTIN | – | – | yes |
| 512-930 | Frontier | GEORGETOWN | – | – | yes |
| 512-931 | Frontier | GEORGETOWN | – | yes | yes |
| 512-932 | Brightspeed | KEMPNER | – | yes | yes |
| 512-933 | AT&T | AUSTIN | – | – | yes |
| 512-934 | AT&T | AUSTIN | – | yes | yes |
| 512-935 | Spok | AUSTIN | – | – | yes |
| 512-936 | AT&T | AUSTIN | – | – | yes |
| 512-937 | Verizon | AUSTIN | 2012-10-22 | yes | yes |
| 512-938 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | SAN MARCOS | 2007-05-02 | yes | yes |
| 512-939 | AT&T | AUSTIN | 2006-09-22 | yes | yes |
| 512-940 | AT&T | AUSTIN | – | – | yes |
| 512-941 | AT&T | AUSTIN | – | – | yes |
| 512-942 | Frontier | GEORGETOWN | – | yes | yes |
| 512-943 | Frontier | GEORGETOWN | – | yes | yes |
| 512-944 | AT&T | AUSTIN | – | – | yes |
| 512-945 | AT&T | AUSTIN | 2006-04-17 | yes | yes |
| 512-946 | Lumen | AUSTIN | 2007-12-18 | yes | yes |
| 512-947 | T-Mobile | AUSTIN | – | – | yes |
| 512-948 | Frontier | GEORGETOWN | – | yes | yes |
| 512-949 | AT&T | AUSTIN | 2008-01-25 | yes | yes |
| 512-951 | AT&T | XXXXXXXXXX | – | – | yes |
| 512-952 | Verizon | AUSTIN | 2012-11-16 | yes | yes |
| 512-953 | Charter | AUSTIN | – | yes | yes |
| 512-954 | AT&T | AUSTIN | 2012-12-27 | yes | yes |
| 512-955 | Onvoy | TAYLOR | – | yes | yes |
| 512-956 | Bandwidth | AUSTIN | – | yes | yes |
| 512-957 | Bandwidth | PAIGE | 2014-04-17 | yes | yes |
| 512-960 | AT&T | AUSTIN | 2014-02-28 | yes | yes |
| 512-961 | T-Mobile | AUSTIN | 2006-06-20 | yes | yes |
| 512-962 | Verizon | AUSTIN | 2013-06-28 | yes | yes |
| 512-963 | AT&T | AUSTIN | – | – | yes |
| 512-964 | AT&T | AUSTIN | – | – | yes |
| 512-965 | AT&T | AUSTIN | – | – | yes |
| 512-966 | AT&T | GEORGETOWN | – | yes | yes |
| 512-967 | Peerless | KEMPNER | 2014-04-11 | yes | yes |
| 512-968 | AT&T | AUSTIN | – | yes | yes |
| 512-969 | CSC VOICE, LLC | AUSTIN | 2014-02-03 | yes | yes |
| 512-970 | AT&T | AUSTIN | – | – | yes |
| 512-971 | AT&T | AUSTIN | – | – | yes |
| 512-972 | AT&T | AUSTIN | – | yes | yes |
| 512-973 | AT&T | AUSTIN | – | – | yes |
| 512-974 | AT&T | AUSTIN | – | – | yes |
| 512-975 | AT&T | AUSTIN | 2014-11-25 | yes | yes |
| 512-977 | AT&T | AUSTIN | – | yes | yes |
| 512-978 | AT&T | AUSTIN | – | yes | yes |
| 512-979 | AT&T | AUSTIN | 2023-08-15 | yes | yes |
| 512-980 | Telnyx | MCDADE | – | yes | yes |
| 512-981 | AT&T | AUSTIN | 2008-03-26 | yes | yes |
| 512-982 | AT&T | AUSTIN | 2013-11-12 | yes | yes |
| 512-983 | AT&T | AUSTIN | 2006-01-10 | yes | yes |
| 512-984 | AT&T | AUSTIN | – | – | yes |
| 512-985 | Charter | BASTROP | – | yes | yes |
| 512-986 | T-Mobile | LEANDER | – | yes | yes |
| 512-987 | Verizon | AUSTIN | 2013-06-28 | yes | yes |
| 512-988 | AT&T | BASTROP | – | yes | yes |
| 512-989 | AT&T | AUSTIN | – | – | yes |
| 512-990 | AT&T | AUSTIN | – | – | yes |
| 512-991 | Onvoy | LOMETA | 2013-02-14 | yes | yes |
| 512-992 | AT&T | AUSTIN | 2006-08-02 | yes | yes |
| 512-993 | Verizon | AUSTIN | 2012-11-27 | yes | yes |
| 512-994 | AT&T | AUSTIN | 2011-01-18 | yes | yes |
| 512-995 | AT&T | LOCKHART | – | yes | yes |
| 512-996 | AT&T | AUSTIN | – | yes | yes |
| 512-997 | AT&T | AUSTIN | – | yes | yes |
| 512-998 | T-Mobile | AUSTIN | 2012-11-21 | yes | yes |
| 512-999 | EVOLVE CELLULAR, INC. | BASTROP | 2008-06-25 | yes | yes |
Frequently asked
How many prefixes does area code 512 have?
785 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 7,850 thousand-number ranges across 36 rate centers.
What do the first three digits after 512 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 512 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 512 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 523 of 512'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