Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
AUSTIN prefixes in area code 512
NANPA records 585 assigned NXX blocks to rate center AUSTIN in area code 512, 74.5% of the 785 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 30 holders hold those blocks, the largest being SOUTHWESTERN BELL (244), NEW CINGULAR WIRELESS PCS, LLC - IL (84), T-MOBILE USA, INC. (54). The earliest assignment on record here is 2001-01-08 and the most recent 2024-11-01. 352 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 507, 737, 775, 812 – overlay codes cover the same geography, so a rate center is served by all of them.
585 assigned blocks – 74.5% of 512
30 holders of record
352 of them pooled in 1,000-number lots
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 512-200 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-201 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2011-12-20 | yes | yes |
| 512-202 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2012-01-19 | yes | yes |
| 512-203 | T-Mobile T-MOBILE USA, INC. | 2002-11-14 | yes | yes |
| 512-204 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 512-205 | Spok SPOK, INC. | – | no | yes |
| 512-206 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-207 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-208 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 512-209 | American Messaging AMERICAN MESSAGING SERVICES, LLC | 2001-05-01 | no | yes |
| 512-215 | Charter TWC IP ENABLED SERVICES, LLC | 2004-03-10 | yes | yes |
| 512-217 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-218 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-219 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-220 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | no | yes |
| 512-221 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2011-04-15 | yes | yes |
| 512-222 | EVOLVE CELLULAR, INC. | 2010-02-18 | yes | yes |
| 512-223 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-224 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-225 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 512-226 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-228 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-230 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2011-03-25 | yes | yes |
| 512-231 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-232 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-233 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | – | yes | yes |
| 512-235 | Spok SPOK, INC. | – | no | yes |
| 512-236 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-238 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-239 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-241 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-242 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-243 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-244 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-246 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-247 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-248 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-249 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-250 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-251 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-252 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-254 | Onvoy ONVOY, LLC - TX | 2023-05-16 | yes | yes |
| 512-255 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-257 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-258 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-261 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-263 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-264 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-266 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-267 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-270 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2013-03-27 | yes | yes |
| 512-271 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | – | yes | yes |
| 512-272 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-275 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | – | yes | yes |
| 512-276 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-278 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-279 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-280 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-282 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-283 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-284 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 512-286 | AT&T SOUTHWESTERN BELL | 2001-05-22 | no | yes |
| 512-287 | T-Mobile T-MOBILE USA, INC. | 2006-11-21 | yes | yes |
| 512-288 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-289 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2001-10-02 | no | yes |
| 512-291 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-292 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-293 | T-Mobile T-MOBILE USA, INC. | – | no | yes |
| 512-294 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-296 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-297 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-298 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2011-06-21 | yes | yes |
| 512-299 | Onvoy ONVOY, LLC - TX | – | yes | yes |
| 512-300 | Charter TWC IP ENABLED SERVICES, LLC | – | yes | yes |
| 512-301 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-302 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-305 | AT&T AT&T ENTERPRISES, LLC | – | yes | yes |
| 512-306 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-307 | Spok SPOK, INC. | – | no | yes |
| 512-310 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-313 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2006-12-22 | yes | yes |
| 512-314 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-315 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-317 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2007-02-14 | yes | yes |
| 512-318 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2009-04-03 | yes | yes |
| 512-319 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2011-10-05 | yes | yes |
| 512-320 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-322 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-323 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-324 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-326 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-327 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-328 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-329 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-330 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-331 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-333 | USFON, INC. - TX | 2010-05-12 | yes | yes |
| 512-334 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 512-335 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-336 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-338 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-339 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-340 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-341 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-342 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-343 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-344 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-345 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-346 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-347 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-348 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2011-05-18 | yes | yes |
| 512-349 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-350 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-351 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | – | yes | yes |
| 512-354 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2009-12-28 | yes | yes |
| 512-356 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-358 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-362 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 2011-06-22 | yes | yes |
| 512-363 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-364 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2007-09-06 | yes | yes |
| 512-366 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-367 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-368 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2010-02-04 | yes | yes |
| 512-369 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-370 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-371 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-372 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-373 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-374 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-375 | T-Mobile T-MOBILE USA, INC. | 2013-06-20 | yes | yes |
| 512-377 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-378 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-380 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-381 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | no | yes |
| 512-382 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | – | yes | yes |
| 512-383 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-384 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | – | yes | yes |
| 512-385 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-386 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-387 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2013-11-07 | yes | yes |
| 512-388 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-389 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-390 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-391 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-394 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-397 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-401 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-402 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-403 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-404 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-406 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-407 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-410 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2008-01-07 | yes | yes |
| 512-413 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-414 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-415 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-416 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-417 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | yes | yes |
| 512-418 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-419 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-420 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-421 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-422 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-423 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-424 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-425 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-426 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-427 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-428 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-431 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-432 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-433 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-434 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-435 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-436 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-437 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-438 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-439 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 512-440 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-441 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-442 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-443 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-444 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-445 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-447 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-448 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-450 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-451 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-452 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-453 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-454 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-457 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-458 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-459 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-460 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-461 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-462 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-463 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-464 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-465 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-466 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 512-467 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-468 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-469 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-470 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | no | yes |
| 512-471 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-472 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-473 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-474 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-475 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-476 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-477 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-478 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-479 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-480 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-481 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-482 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-483 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-484 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 512-485 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-486 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-487 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-490 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-491 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-492 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-493 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-494 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-495 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-496 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-497 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-498 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-499 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-500 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2022-07-28 | yes | yes |
| 512-501 | Onvoy ONVOY, LLC - TX | 2007-09-19 | yes | yes |
| 512-502 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-503 | Onvoy ONVOY, LLC - TX | 2022-04-28 | yes | yes |
| 512-505 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-506 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-507 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-512 | USFON, INC. - TX | 2023-01-06 | yes | yes |
| 512-513 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2008-09-02 | yes | yes |
| 512-514 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-516 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2010-02-18 | yes | yes |
| 512-517 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-518 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | – | yes | yes |
| 512-519 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 512-520 | Charter TWC IP ENABLED SERVICES, LLC | – | yes | yes |
| 512-522 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2010-02-24 | yes | yes |
| 512-524 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | yes | yes |
| 512-526 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2008-03-18 | yes | yes |
| 512-527 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-529 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2007-04-03 | yes | yes |
| 512-530 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-531 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 512-532 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-533 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 512-534 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2010-07-19 | yes | yes |
| 512-535 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2005-04-22 | yes | yes |
| 512-536 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-537 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2008-11-21 | yes | yes |
| 512-538 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | yes | yes |
| 512-539 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2007-10-11 | yes | yes |
| 512-541 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2008-03-26 | yes | yes |
| 512-542 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-544 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2005-03-01 | yes | yes |
| 512-547 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2008-09-15 | yes | yes |
| 512-550 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2010-07-16 | yes | yes |
| 512-551 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2008-10-22 | yes | yes |
| 512-552 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-04-17 | yes | yes |
| 512-554 | T-Mobile T-MOBILE USA, INC. | – | no | yes |
| 512-560 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-563 | T-Mobile T-MOBILE USA, INC. | 2001-02-27 | yes | yes |
| 512-565 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2001-01-25 | no | yes |
| 512-567 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | no | yes |
| 512-568 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2009-03-03 | yes | yes |
| 512-569 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | no | yes |
| 512-570 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2008-05-30 | yes | yes |
| 512-571 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2011-09-19 | yes | yes |
| 512-573 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-574 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2010-02-23 | yes | yes |
| 512-576 | T-Mobile T-MOBILE USA, INC. | – | no | yes |
| 512-577 | T-Mobile T-MOBILE USA, INC. | 2002-04-04 | no | yes |
| 512-578 | AT&T SOUTHWESTERN BELL | 2010-08-04 | yes | yes |
| 512-579 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2007-06-26 | yes | yes |
| 512-580 | Charter TWC IP ENABLED SERVICES, LLC | 2014-10-16 | yes | yes |
| 512-582 | Onvoy ONVOY, LLC - TX | – | yes | yes |
| 512-583 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-584 | T-Mobile T-MOBILE USA, INC. | 2006-08-31 | yes | yes |
| 512-585 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | no | yes |
| 512-586 | T-Mobile T-MOBILE USA, INC. | 2001-01-08 | yes | yes |
| 512-587 | T-Mobile T-MOBILE USA, INC. | 2001-04-24 | yes | yes |
| 512-589 | T-Mobile METROPCS, INC. | – | yes | yes |
| 512-590 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2006-04-27 | yes | yes |
| 512-592 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2007-07-19 | yes | yes |
| 512-593 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2013-04-25 | yes | yes |
| 512-594 | AT&T SOUTHWESTERN BELL | 2001-08-10 | no | yes |
| 512-596 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2013-10-25 | yes | yes |
| 512-597 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 512-599 | Onvoy ONVOY, LLC - TX | – | yes | yes |
| 512-600 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | no | yes |
| 512-602 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | – | no | yes |
| 512-603 | Spok SPOK, INC. | – | no | yes |
| 512-604 | Spok SPOK, INC. | – | no | yes |
| 512-605 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 2012-02-07 | yes | yes |
| 512-606 | Spok SPOK, INC. | – | no | yes |
| 512-608 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-609 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-610 | Onvoy ONVOY, LLC - TX | – | no | yes |
| 512-612 | LEAP TELECOM, LLC | 2024-11-01 | yes | yes |
| 512-613 | Spok SPOK, INC. | – | no | yes |
| 512-614 | Charter TWC IP ENABLED SERVICES, LLC | 2010-09-20 | yes | yes |
| 512-615 | Onvoy ONVOY, LLC - TX | – | no | yes |
| 512-617 | Onvoy ONVOY, LLC - TX | – | no | yes |
| 512-619 | T-Mobile T-MOBILE USA, INC. | 2001-04-24 | yes | yes |
| 512-621 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2013-05-31 | yes | yes |
| 512-622 | Spok SPOK, INC. | – | no | yes |
| 512-623 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-624 | Spok SPOK, INC. | – | no | yes |
| 512-625 | Spok SPOK, INC. | – | no | yes |
| 512-626 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | no | yes |
| 512-627 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | no | yes |
| 512-628 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | yes | yes |
| 512-631 | Onvoy ONVOY, LLC - TX | 2021-06-17 | yes | yes |
| 512-632 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-633 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-634 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | – | yes | yes |
| 512-636 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | no | yes |
| 512-637 | AUSTIN BESTLINE COMPANY | – | no | yes |
| 512-638 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | yes | yes |
| 512-640 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2014-07-03 | yes | yes |
| 512-643 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2014-07-02 | yes | yes |
| 512-645 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2014-09-10 | yes | yes |
| 512-646 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 512-647 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 512-649 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 512-650 | T-Mobile T-MOBILE USA, INC. | 2007-12-05 | yes | yes |
| 512-651 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | – | no | yes |
| 512-652 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | – | yes | yes |
| 512-653 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-654 | AT&T SOUTHWESTERN BELL | 2012-04-05 | yes | yes |
| 512-655 | AT&T SOUTHWESTERN BELL | 2012-04-05 | yes | yes |
| 512-656 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-657 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-658 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-659 | T-Mobile METROPCS, INC. | 2001-04-24 | yes | yes |
| 512-660 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2011-03-25 | yes | yes |
| 512-662 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2006-09-18 | yes | yes |
| 512-663 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | no | yes |
| 512-664 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2004-11-04 | yes | yes |
| 512-666 | EVOLVE CELLULAR, INC. | 2011-03-21 | yes | yes |
| 512-669 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-670 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-671 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-672 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-673 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-674 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-676 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2013-11-22 | yes | yes |
| 512-679 | T-Mobile METROPCS, INC. | 2014-06-30 | yes | yes |
| 512-680 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-681 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-682 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 512-683 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-684 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-685 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-687 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 512-689 | T-Mobile METROPCS, INC. | 2001-04-24 | yes | yes |
| 512-691 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | – | yes | yes |
| 512-692 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | – | yes | yes |
| 512-693 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-694 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-695 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-696 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-01-05 | yes | yes |
| 512-697 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | – | yes | yes |
| 512-698 | T-Mobile T-MOBILE USA, INC. | – | no | yes |
| 512-699 | T-Mobile METROPCS, INC. | – | yes | yes |
| 512-701 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2009-03-16 | yes | yes |
| 512-702 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2022-05-24 | yes | yes |
| 512-703 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-704 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-705 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2008-07-25 | yes | yes |
| 512-706 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-707 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-708 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-709 | T-Mobile T-MOBILE USA, INC. | 2006-06-20 | yes | yes |
| 512-710 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2014-10-06 | yes | yes |
| 512-712 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-716 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-717 | Peerless PEERLESS NETWORK OF TEXAS, LLC - TX | 2013-03-01 | yes | yes |
| 512-719 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-720 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2012-10-10 | yes | yes |
| 512-721 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | – | yes | yes |
| 512-723 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-724 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-725 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-726 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | – | no | yes |
| 512-727 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2004-12-13 | yes | yes |
| 512-728 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-730 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-731 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-732 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-733 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-735 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | no | yes |
| 512-736 | T-Mobile T-MOBILE USA, INC. | – | no | yes |
| 512-737 | Onvoy ONVOY, LLC - TX | 2023-08-23 | yes | yes |
| 512-739 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2008-03-26 | yes | yes |
| 512-740 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-741 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-742 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-743 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-744 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 512-745 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2006-07-25 | yes | yes |
| 512-747 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2005-02-08 | yes | yes |
| 512-748 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-750 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-751 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-758 | T-Mobile T-MOBILE USA, INC. | 2008-08-04 | yes | yes |
| 512-761 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2009-06-05 | yes | yes |
| 512-762 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-765 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2011-07-05 | yes | yes |
| 512-766 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2014-11-20 | yes | yes |
| 512-767 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-769 | T-Mobile T-MOBILE USA, INC. | 2001-11-27 | yes | yes |
| 512-770 | T-Mobile METROPCS, INC. | – | yes | yes |
| 512-771 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-773 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-774 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2012-06-12 | yes | yes |
| 512-775 | T-Mobile T-MOBILE USA, INC. | – | no | yes |
| 512-776 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2005-03-23 | yes | yes |
| 512-777 | EVOLVE CELLULAR, INC. | 2009-05-27 | yes | yes |
| 512-779 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-780 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2007-06-18 | yes | yes |
| 512-782 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-783 | T-Mobile METROPCS, INC. | 2014-09-18 | yes | yes |
| 512-784 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-785 | T-Mobile T-MOBILE USA, INC. | – | no | yes |
| 512-786 | T-Mobile T-MOBILE USA, INC. | 2001-10-02 | yes | yes |
| 512-788 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2005-08-03 | yes | yes |
| 512-789 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-791 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-792 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2014-08-25 | yes | yes |
| 512-794 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-795 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-796 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-797 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-799 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-800 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2010-11-04 | yes | yes |
| 512-801 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-802 | Spok SPOK, INC. | – | no | yes |
| 512-803 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-04-17 | yes | yes |
| 512-804 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-806 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2014-10-21 | yes | yes |
| 512-807 | Onvoy ONVOY, LLC - TX | 2008-01-14 | yes | yes |
| 512-808 | Windstream PAETEC ITEL, LLC | 2012-02-10 | yes | yes |
| 512-809 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | yes | yes |
| 512-810 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2008-03-26 | yes | yes |
| 512-813 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 2012-06-14 | yes | yes |
| 512-814 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2008-01-25 | yes | yes |
| 512-815 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2011-07-01 | yes | yes |
| 512-816 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2008-12-17 | yes | yes |
| 512-820 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2008-05-16 | yes | yes |
| 512-821 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-822 | FOREMOST TELECOMMUNICATIONS CORPORATION - TX | 2013-02-01 | yes | yes |
| 512-823 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-825 | T-Mobile T-MOBILE USA, INC. | – | no | yes |
| 512-826 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-827 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | yes | yes |
| 512-828 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-831 | Onvoy ONVOY, LLC - TX | 2012-08-29 | yes | yes |
| 512-832 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-833 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-834 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-835 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-836 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-837 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-838 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-839 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2014-11-25 | yes | yes |
| 512-840 | Lumen CENTURYLINK COMMUNICATIONS, LLC | 2014-08-19 | yes | yes |
| 512-841 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-844 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 512-845 | T-Mobile METROPCS, INC. | – | yes | yes |
| 512-848 | T-Mobile METROPCS, INC. | – | yes | yes |
| 512-849 | Spok SPOK, INC. | – | no | yes |
| 512-850 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2007-11-29 | yes | yes |
| 512-851 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-852 | WESTEL, INC. - TX | 2006-06-19 | yes | yes |
| 512-853 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | – | yes | yes |
| 512-854 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-857 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-860 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-861 | Onvoy ONVOY, LLC - TX | – | yes | yes |
| 512-865 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2012-12-27 | yes | yes |
| 512-867 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-870 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-871 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2018-11-26 | yes | yes |
| 512-872 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2013-06-18 | yes | yes |
| 512-873 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-874 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-875 | Spok SPOK, INC. | – | no | yes |
| 512-879 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 512-884 | CSC WIRELESS, LLC | 2019-04-01 | yes | yes |
| 512-888 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2004-03-30 | yes | yes |
| 512-889 | Charter ONVOY SPECTRUM, LLC | 2022-04-29 | yes | yes |
| 512-891 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-892 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-893 | T-Mobile T-MOBILE USA, INC. | 2014-08-12 | yes | yes |
| 512-895 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-896 | Spok SPOK, INC. | – | no | yes |
| 512-897 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-08-02 | yes | yes |
| 512-899 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-900 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2010-12-02 | yes | yes |
| 512-901 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | no | yes |
| 512-902 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-09-22 | yes | yes |
| 512-903 | T-Mobile T-MOBILE USA, INC. | 2007-11-06 | yes | yes |
| 512-904 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2006-08-22 | yes | yes |
| 512-905 | T-Mobile T-MOBILE USA, INC. | 2005-04-21 | yes | yes |
| 512-906 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2006-08-25 | yes | yes |
| 512-907 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-908 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-909 | T-Mobile T-MOBILE USA, INC. | 2007-07-13 | yes | yes |
| 512-910 | T-Mobile METROPCS, INC. | 2012-09-06 | yes | yes |
| 512-912 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-913 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-914 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-915 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2014-10-21 | yes | yes |
| 512-916 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-917 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-918 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-919 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-920 | NUSO, LLC | 2012-10-17 | yes | yes |
| 512-921 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 512-922 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-923 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-924 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-925 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-926 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-927 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-928 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-929 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-933 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-934 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-935 | Spok SPOK, INC. | – | no | yes |
| 512-936 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-937 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2012-10-22 | yes | yes |
| 512-939 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-09-22 | yes | yes |
| 512-940 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-941 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-944 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-945 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-04-17 | yes | yes |
| 512-946 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2007-12-18 | yes | yes |
| 512-947 | T-Mobile T-MOBILE USA, INC. | – | no | yes |
| 512-949 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2008-01-25 | yes | yes |
| 512-952 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 2012-11-16 | yes | yes |
| 512-953 | Charter TWC IP ENABLED SERVICES, LLC | – | yes | yes |
| 512-954 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2012-12-27 | yes | yes |
| 512-956 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | – | yes | yes |
| 512-960 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2014-02-28 | yes | yes |
| 512-961 | T-Mobile T-MOBILE USA, INC. | 2006-06-20 | yes | yes |
| 512-962 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2013-06-28 | yes | yes |
| 512-963 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-964 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-965 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-968 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 512-969 | CSC VOICE, LLC | 2014-02-03 | yes | yes |
| 512-970 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-971 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 512-972 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-973 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-974 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-975 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2014-11-25 | yes | yes |
| 512-977 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-978 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-979 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2023-08-15 | yes | yes |
| 512-981 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2008-03-26 | yes | yes |
| 512-982 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2013-11-12 | yes | yes |
| 512-983 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-01-10 | yes | yes |
| 512-984 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-987 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2013-06-28 | yes | yes |
| 512-989 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-990 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 512-992 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2006-08-02 | yes | yes |
| 512-993 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2012-11-27 | yes | yes |
| 512-994 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2011-01-18 | yes | yes |
| 512-996 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-997 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 512-998 | T-Mobile T-MOBILE USA, INC. | 2012-11-21 | yes | yes |
The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.
Who holds the blocks
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| SOUTHWESTERN BELL | AT&T | 244 | 41.7% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 84 | 14.4% |
| T-MOBILE USA, INC. | T-Mobile | 54 | 9.2% |
| LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Lumen | 44 | 7.5% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | Verizon | 39 | 6.7% |
| SPOK, INC. | Spok | 15 | 2.6% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Verizon | 14 | 2.4% |
| ONVOY, LLC - TX | Onvoy | 14 | 2.4% |
| BANDWIDTH.COM CLEC, LLC - TX | Bandwidth | 12 | 2.1% |
| LEVEL 3 COMMUNICATIONS, LLC - TX | Lumen | 10 | 1.7% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | AT&T | 10 | 1.7% |
| METROPCS, INC. | T-Mobile | 10 | 1.7% |
| TWC IP ENABLED SERVICES, LLC | Charter | 6 | 1% |
| GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | 5 | 0.9% |
| AMERICAN MESSAGING SERVICES, LLC | American Messaging | 3 | 0.5% |
| EVOLVE CELLULAR, INC. | – | 3 | 0.5% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 3 | 0.5% |
| USFON, INC. - TX | – | 2 | 0.3% |
| PAETEC ITEL, LLC | Windstream | 2 | 0.3% |
| AT&T ENTERPRISES, LLC | AT&T | 1 | 0.2% |
| LEAP TELECOM, LLC | – | 1 | 0.2% |
| AUSTIN BESTLINE COMPANY | – | 1 | 0.2% |
| PEERLESS NETWORK OF TEXAS, LLC - TX | Peerless | 1 | 0.2% |
| FOREMOST TELECOMMUNICATIONS CORPORATION - TX | – | 1 | 0.2% |
| CENTURYLINK COMMUNICATIONS, LLC | Lumen | 1 | 0.2% |
| WESTEL, INC. - TX | – | 1 | 0.2% |
| CSC WIRELESS, LLC | – | 1 | 0.2% |
| ONVOY SPECTRUM, LLC | Charter | 1 | 0.2% |
| NUSO, LLC | – | 1 | 0.2% |
| CSC VOICE, LLC | – | 1 | 0.2% |
Same rate center in other codes
Overlay codes cover the same geography, so one rate center is served by all of them.
Frequently asked
Which prefixes belong to AUSTIN in area code 512?
585 blocks: 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 215, 217 and 573 more, all listed in the table above.
Which carriers have numbers in AUSTIN?
SOUTHWESTERN BELL (244 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (84 blocks), T-MOBILE USA, INC. (54 blocks), LEVEL 3 OF TELECOM OF TEXAS, LLC - TX (44 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (39 blocks), SPOK, INC. (15 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is AUSTIN a city?
It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.