Phone numbers in Austin, Texas
Austin has 739 phone prefixes in area codes 512, 737.
Biggest holders: AT&T (local phone), AT&T Mobility, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 33%
- Internet / business phone carrier 28%
- Paging service 2%
- Phone company 4%
Every prefix in Austin
Search the first six digits of a number in this list. If it's here, the number started in Austin with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 512-200 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-201 | Verizon Wireless | Mobile carrier | 2011 |
| 512-202 | Verizon Wireless | Mobile carrier | 2012 |
| 512-203 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 512-204 | American Messaging Services | Paging service | – |
| 512-205 | Spok | Paging service | – |
| 512-206 | AT&T (local phone) | Local phone company | – |
| 512-207 | AT&T (local phone) | Local phone company | – |
| 512-208 | American Messaging Services | Paging service | – |
| 512-209 | American Messaging Services | Paging service | 2001 |
| 512-215 | Charter / Spectrum | Internet / business phone carrier | 2004 |
| 512-217 | AT&T Mobility | Mobile carrier | – |
| 512-218 | AT&T (local phone) | Local phone company | – |
| 512-219 | AT&T (local phone) | Local phone company | – |
| 512-220 | Grande Communications Networks | Phone company | – |
| 512-221 | AT&T Mobility | Mobile carrier | 2011 |
| 512-222 | Evolve Cellular | Mobile carrier | 2010 |
| 512-223 | AT&T (local phone) | Local phone company | – |
| 512-224 | AT&T (local phone) | Local phone company | – |
| 512-225 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-226 | AT&T (local phone) | Local phone company | – |
| 512-228 | AT&T (local phone) | Local phone company | – |
| 512-230 | Verizon Wireless | Mobile carrier | 2011 |
| 512-231 | AT&T (local phone) | Local phone company | – |
| 512-232 | AT&T (local phone) | Local phone company | – |
| 512-233 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 512-235 | Spok | Paging service | – |
| 512-236 | AT&T (local phone) | Local phone company | – |
| 512-238 | AT&T (local phone) | Local phone company | – |
| 512-239 | AT&T (local phone) | Local phone company | – |
| 512-241 | AT&T (local phone) | Local phone company | – |
| 512-242 | AT&T (local phone) | Local phone company | – |
| 512-243 | AT&T (local phone) | Local phone company | – |
| 512-244 | AT&T (local phone) | Local phone company | – |
| 512-246 | AT&T (local phone) | Local phone company | – |
| 512-247 | AT&T (local phone) | Local phone company | – |
| 512-248 | AT&T (local phone) | Local phone company | – |
| 512-249 | AT&T (local phone) | Local phone company | – |
| 512-250 | AT&T (local phone) | Local phone company | – |
| 512-251 | AT&T (local phone) | Local phone company | – |
| 512-252 | AT&T (local phone) | Local phone company | – |
| 512-254 | Onvoy | Internet / business phone carrier | 2023 |
| 512-255 | AT&T (local phone) | Local phone company | – |
| 512-257 | AT&T (local phone) | Local phone company | – |
| 512-258 | AT&T (local phone) | Local phone company | – |
| 512-261 | AT&T (local phone) | Local phone company | – |
| 512-263 | AT&T (local phone) | Local phone company | – |
| 512-264 | AT&T (local phone) | Local phone company | – |
| 512-266 | AT&T (local phone) | Local phone company | – |
| 512-267 | AT&T (local phone) | Local phone company | – |
| 512-270 | Level 3 (Lumen) | Internet / business phone carrier | 2013 |
| 512-271 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-272 | AT&T (local phone) | Local phone company | – |
| 512-275 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 512-276 | AT&T (local phone) | Local phone company | – |
| 512-278 | AT&T (local phone) | Local phone company | – |
| 512-279 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-280 | AT&T (local phone) | Local phone company | – |
| 512-282 | AT&T (local phone) | Local phone company | – |
| 512-283 | AT&T (local phone) | Local phone company | – |
| 512-284 | AT&T Mobility | Mobile carrier | – |
| 512-286 | AT&T (local phone) | Local phone company | 2001 |
| 512-287 | T-Mobile (including Sprint) | Mobile carrier | 2006 |
| 512-288 | AT&T (local phone) | Local phone company | – |
| 512-289 | AT&T Mobility | Mobile carrier | 2001 |
| 512-291 | AT&T (local phone) | Local phone company | – |
| 512-292 | AT&T (local phone) | Local phone company | – |
| 512-293 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-294 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-296 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-297 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-298 | AT&T Mobility | Mobile carrier | 2011 |
| 512-299 | Onvoy | Internet / business phone carrier | – |
| 512-300 | Charter / Spectrum | Internet / business phone carrier | – |
| 512-301 | AT&T (local phone) | Local phone company | – |
| 512-302 | AT&T (local phone) | Local phone company | – |
| 512-305 | AT&T Enterprises | Phone company | – |
| 512-306 | AT&T (local phone) | Local phone company | – |
| 512-307 | Spok | Paging service | – |
| 512-310 | AT&T (local phone) | Local phone company | – |
| 512-313 | Level 3 (Lumen) | Internet / business phone carrier | 2006 |
| 512-314 | AT&T (local phone) | Local phone company | – |
| 512-315 | AT&T (local phone) | Local phone company | – |
| 512-317 | AT&T Mobility | Mobile carrier | 2007 |
| 512-318 | Verizon Wireless | Mobile carrier | 2009 |
| 512-319 | Teleport Communications America | Internet / business phone carrier | 2011 |
| 512-320 | AT&T (local phone) | Local phone company | – |
| 512-322 | AT&T (local phone) | Local phone company | – |
| 512-323 | AT&T (local phone) | Local phone company | – |
| 512-324 | AT&T (local phone) | Local phone company | – |
| 512-326 | AT&T (local phone) | Local phone company | – |
| 512-327 | AT&T (local phone) | Local phone company | – |
| 512-328 | AT&T (local phone) | Local phone company | – |
| 512-329 | AT&T (local phone) | Local phone company | – |
| 512-330 | AT&T (local phone) | Local phone company | – |
| 512-331 | AT&T (local phone) | Local phone company | – |
| 512-333 | Usfon | Phone company | 2010 |
| 512-334 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-335 | AT&T (local phone) | Local phone company | – |
| 512-336 | AT&T (local phone) | Local phone company | – |
| 512-338 | AT&T (local phone) | Local phone company | – |
| 512-339 | AT&T (local phone) | Local phone company | – |
| 512-340 | AT&T (local phone) | Local phone company | – |
| 512-341 | AT&T (local phone) | Local phone company | – |
| 512-342 | AT&T (local phone) | Local phone company | – |
| 512-343 | AT&T (local phone) | Local phone company | – |
| 512-344 | AT&T (local phone) | Local phone company | – |
| 512-345 | AT&T (local phone) | Local phone company | – |
| 512-346 | AT&T (local phone) | Local phone company | – |
| 512-347 | AT&T (local phone) | Local phone company | – |
| 512-348 | Verizon Wireless | Mobile carrier | 2011 |
| 512-349 | AT&T (local phone) | Local phone company | – |
| 512-350 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-351 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-354 | AT&T Mobility | Mobile carrier | 2009 |
| 512-356 | AT&T (local phone) | Local phone company | – |
| 512-358 | AT&T (local phone) | Local phone company | – |
| 512-362 | MCImetro (Verizon Business) | Internet / business phone carrier | 2011 |
| 512-363 | AT&T (local phone) | Local phone company | – |
| 512-364 | Verizon Wireless | Mobile carrier | 2007 |
| 512-366 | AT&T (local phone) | Local phone company | – |
| 512-367 | AT&T (local phone) | Local phone company | – |
| 512-368 | AT&T Mobility | Mobile carrier | 2010 |
| 512-369 | AT&T (local phone) | Local phone company | – |
| 512-370 | AT&T (local phone) | Local phone company | – |
| 512-371 | AT&T (local phone) | Local phone company | – |
| 512-372 | AT&T (local phone) | Local phone company | – |
| 512-373 | AT&T (local phone) | Local phone company | – |
| 512-374 | AT&T (local phone) | Local phone company | – |
| 512-375 | T-Mobile (including Sprint) | Mobile carrier | 2013 |
| 512-377 | AT&T (local phone) | Local phone company | – |
| 512-378 | AT&T (local phone) | Local phone company | – |
| 512-380 | AT&T (local phone) | Local phone company | – |
| 512-381 | Tpx Communications | Internet / business phone carrier | – |
| 512-382 | Teleport Communications America | Internet / business phone carrier | – |
| 512-383 | AT&T (local phone) | Local phone company | – |
| 512-384 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 512-385 | AT&T (local phone) | Local phone company | – |
| 512-386 | AT&T (local phone) | Local phone company | – |
| 512-387 | Bandwidth | Internet / business phone carrier | 2013 |
| 512-388 | AT&T (local phone) | Local phone company | – |
| 512-389 | AT&T (local phone) | Local phone company | – |
| 512-390 | AT&T (local phone) | Local phone company | – |
| 512-391 | AT&T (local phone) | Local phone company | – |
| 512-394 | AT&T (local phone) | Local phone company | – |
| 512-397 | AT&T (local phone) | Local phone company | – |
| 512-401 | AT&T (local phone) | Local phone company | – |
| 512-402 | AT&T (local phone) | Local phone company | – |
| 512-403 | AT&T (local phone) | Local phone company | – |
| 512-404 | AT&T (local phone) | Local phone company | – |
| 512-406 | AT&T (local phone) | Local phone company | – |
| 512-407 | AT&T (local phone) | Local phone company | – |
| 512-410 | Verizon Wireless | Mobile carrier | 2008 |
| 512-413 | AT&T Mobility | Mobile carrier | – |
| 512-414 | AT&T (local phone) | Local phone company | – |
| 512-415 | AT&T Mobility | Mobile carrier | – |
| 512-416 | AT&T (local phone) | Local phone company | – |
| 512-417 | Verizon Wireless | Mobile carrier | – |
| 512-418 | AT&T (local phone) | Local phone company | – |
| 512-419 | AT&T (local phone) | Local phone company | – |
| 512-420 | AT&T (local phone) | Local phone company | – |
| 512-421 | AT&T (local phone) | Local phone company | – |
| 512-422 | AT&T Mobility | Mobile carrier | – |
| 512-423 | AT&T Mobility | Mobile carrier | – |
| 512-424 | AT&T (local phone) | Local phone company | – |
| 512-425 | AT&T (local phone) | Local phone company | – |
| 512-426 | AT&T Mobility | Mobile carrier | – |
| 512-427 | AT&T (local phone) | Local phone company | – |
| 512-428 | AT&T (local phone) | Local phone company | – |
| 512-431 | AT&T Mobility | Mobile carrier | – |
| 512-432 | AT&T (local phone) | Local phone company | – |
| 512-433 | AT&T (local phone) | Local phone company | – |
| 512-434 | AT&T (local phone) | Local phone company | – |
| 512-435 | AT&T (local phone) | Local phone company | – |
| 512-436 | AT&T (local phone) | Local phone company | – |
| 512-437 | AT&T (local phone) | Local phone company | – |
| 512-438 | AT&T (local phone) | Local phone company | – |
| 512-439 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-440 | AT&T (local phone) | Local phone company | – |
| 512-441 | AT&T (local phone) | Local phone company | – |
| 512-442 | AT&T (local phone) | Local phone company | – |
| 512-443 | AT&T (local phone) | Local phone company | – |
| 512-444 | AT&T (local phone) | Local phone company | – |
| 512-445 | AT&T (local phone) | Local phone company | – |
| 512-447 | AT&T (local phone) | Local phone company | – |
| 512-448 | AT&T (local phone) | Local phone company | – |
| 512-450 | AT&T (local phone) | Local phone company | – |
| 512-451 | AT&T (local phone) | Local phone company | – |
| 512-452 | AT&T (local phone) | Local phone company | – |
| 512-453 | AT&T (local phone) | Local phone company | – |
| 512-454 | AT&T (local phone) | Local phone company | – |
| 512-457 | AT&T (local phone) | Local phone company | – |
| 512-458 | AT&T (local phone) | Local phone company | – |
| 512-459 | AT&T (local phone) | Local phone company | – |
| 512-460 | AT&T (local phone) | Local phone company | – |
| 512-461 | AT&T Mobility | Mobile carrier | – |
| 512-462 | AT&T (local phone) | Local phone company | – |
| 512-463 | AT&T (local phone) | Local phone company | – |
| 512-464 | AT&T (local phone) | Local phone company | – |
| 512-465 | AT&T (local phone) | Local phone company | – |
| 512-466 | AT&T Mobility | Mobile carrier | – |
| 512-467 | AT&T (local phone) | Local phone company | – |
| 512-468 | AT&T Mobility | Mobile carrier | – |
| 512-469 | AT&T (local phone) | Local phone company | – |
| 512-470 | Verizon Wireless | Mobile carrier | – |
| 512-471 | AT&T (local phone) | Local phone company | – |
| 512-472 | AT&T (local phone) | Local phone company | – |
| 512-473 | AT&T (local phone) | Local phone company | – |
| 512-474 | AT&T (local phone) | Local phone company | – |
| 512-475 | AT&T (local phone) | Local phone company | – |
| 512-476 | AT&T (local phone) | Local phone company | – |
| 512-477 | AT&T (local phone) | Local phone company | – |
| 512-478 | AT&T (local phone) | Local phone company | – |
| 512-479 | AT&T (local phone) | Local phone company | – |
| 512-480 | AT&T (local phone) | Local phone company | – |
| 512-481 | AT&T (local phone) | Local phone company | – |
| 512-482 | AT&T (local phone) | Local phone company | – |
| 512-483 | AT&T (local phone) | Local phone company | – |
| 512-484 | AT&T Mobility | Mobile carrier | – |
| 512-485 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-486 | AT&T (local phone) | Local phone company | – |
| 512-487 | AT&T (local phone) | Local phone company | – |
| 512-490 | AT&T (local phone) | Local phone company | – |
| 512-491 | AT&T (local phone) | Local phone company | – |
| 512-492 | AT&T (local phone) | Local phone company | – |
| 512-493 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-494 | AT&T (local phone) | Local phone company | – |
| 512-495 | AT&T (local phone) | Local phone company | – |
| 512-496 | AT&T Mobility | Mobile carrier | – |
| 512-497 | AT&T Mobility | Mobile carrier | – |
| 512-498 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-499 | AT&T (local phone) | Local phone company | – |
| 512-500 | Level 3 (Lumen) | Internet / business phone carrier | 2022 |
| 512-501 | Onvoy | Internet / business phone carrier | 2007 |
| 512-502 | AT&T (local phone) | Local phone company | – |
| 512-503 | Onvoy | Internet / business phone carrier | 2022 |
| 512-505 | AT&T (local phone) | Local phone company | – |
| 512-506 | AT&T (local phone) | Local phone company | – |
| 512-507 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-512 | Usfon | Phone company | 2023 |
| 512-513 | Level 3 (Lumen) | Internet / business phone carrier | 2008 |
| 512-514 | AT&T (local phone) | Local phone company | – |
| 512-516 | Verizon Wireless | Mobile carrier | 2010 |
| 512-517 | AT&T Mobility | Mobile carrier | – |
| 512-518 | Bandwidth | Internet / business phone carrier | – |
| 512-519 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-520 | Charter / Spectrum | Internet / business phone carrier | – |
| 512-522 | Bandwidth | Internet / business phone carrier | 2010 |
| 512-524 | Grande Communications Networks | Phone company | – |
| 512-526 | Teleport Communications America | Internet / business phone carrier | 2008 |
| 512-527 | AT&T (local phone) | Local phone company | – |
| 512-529 | Verizon Wireless | Mobile carrier | 2007 |
| 512-530 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-531 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-532 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-533 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-534 | Verizon Wireless | Mobile carrier | 2010 |
| 512-535 | AT&T Mobility | Mobile carrier | 2005 |
| 512-536 | AT&T (local phone) | Local phone company | – |
| 512-537 | Bandwidth | Internet / business phone carrier | 2008 |
| 512-538 | Grande Communications Networks | Phone company | – |
| 512-539 | Verizon Wireless | Mobile carrier | 2007 |
| 512-541 | Verizon Wireless | Mobile carrier | 2008 |
| 512-542 | AT&T (local phone) | Local phone company | – |
| 512-544 | Level 3 (Lumen) | Internet / business phone carrier | 2005 |
| 512-547 | AT&T Mobility | Mobile carrier | 2008 |
| 512-550 | AT&T Mobility | Mobile carrier | 2010 |
| 512-551 | Level 3 (Lumen) | Internet / business phone carrier | 2008 |
| 512-552 | AT&T Mobility | Mobile carrier | 2006 |
| 512-554 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-560 | AT&T Mobility | Mobile carrier | – |
| 512-563 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 512-565 | AT&T Mobility | Mobile carrier | 2001 |
| 512-567 | Verizon Wireless | Mobile carrier | – |
| 512-568 | AT&T Mobility | Mobile carrier | 2009 |
| 512-569 | Verizon Wireless | Mobile carrier | – |
| 512-570 | Level 3 (Lumen) | Internet / business phone carrier | 2008 |
| 512-571 | Verizon Wireless | Mobile carrier | 2011 |
| 512-573 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-574 | AT&T Mobility | Mobile carrier | 2010 |
| 512-576 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-577 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 512-578 | AT&T (local phone) | Local phone company | 2010 |
| 512-579 | Level 3 (Lumen) | Internet / business phone carrier | 2007 |
| 512-580 | Charter / Spectrum | Internet / business phone carrier | 2014 |
| 512-582 | Onvoy | Internet / business phone carrier | – |
| 512-583 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-584 | T-Mobile (including Sprint) | Mobile carrier | 2006 |
| 512-585 | Verizon Wireless | Mobile carrier | – |
| 512-586 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 512-587 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 512-589 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 512-590 | Verizon Wireless | Mobile carrier | 2006 |
| 512-592 | Verizon Wireless | Mobile carrier | 2007 |
| 512-593 | Bandwidth | Internet / business phone carrier | 2013 |
| 512-594 | AT&T (local phone) | Local phone company | 2001 |
| 512-596 | AT&T Mobility | Mobile carrier | 2013 |
| 512-597 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-599 | Onvoy | Internet / business phone carrier | – |
| 512-600 | Grande Communications Networks | Phone company | – |
| 512-602 | Teleport Communications America | Internet / business phone carrier | – |
| 512-603 | Spok | Paging service | – |
| 512-604 | Spok | Paging service | – |
| 512-605 | MCImetro (Verizon Business) | Internet / business phone carrier | 2012 |
| 512-606 | Spok | Paging service | – |
| 512-608 | AT&T (local phone) | Local phone company | – |
| 512-609 | AT&T (local phone) | Local phone company | – |
| 512-610 | Onvoy | Internet / business phone carrier | – |
| 512-612 | Leap Telecom | Phone company | 2024 |
| 512-613 | Spok | Paging service | – |
| 512-614 | Charter / Spectrum | Internet / business phone carrier | 2010 |
| 512-615 | Onvoy | Internet / business phone carrier | – |
| 512-617 | Onvoy | Internet / business phone carrier | – |
| 512-619 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 512-621 | Verizon Wireless | Mobile carrier | 2013 |
| 512-622 | Spok | Paging service | – |
| 512-623 | AT&T (local phone) | Local phone company | – |
| 512-624 | Spok | Paging service | – |
| 512-625 | Spok | Paging service | – |
| 512-626 | Verizon Wireless | Mobile carrier | – |
| 512-627 | Verizon Wireless | Mobile carrier | – |
| 512-628 | Grande Communications Networks | Phone company | – |
| 512-631 | Onvoy | Internet / business phone carrier | 2021 |
| 512-632 | AT&T Mobility | Mobile carrier | – |
| 512-633 | AT&T Mobility | Mobile carrier | – |
| 512-634 | Teleport Communications America | Internet / business phone carrier | – |
| 512-636 | Verizon Wireless | Mobile carrier | – |
| 512-637 | Austin Bestline | Phone company | – |
| 512-638 | Verizon Wireless | Mobile carrier | – |
| 512-640 | Level 3 (Lumen) | Internet / business phone carrier | 2014 |
| 512-643 | Bandwidth | Internet / business phone carrier | 2014 |
| 512-645 | Verizon Wireless | Mobile carrier | 2014 |
| 512-646 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-647 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-649 | AT&T Mobility | Mobile carrier | – |
| 512-650 | T-Mobile (including Sprint) | Mobile carrier | 2007 |
| 512-651 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 512-652 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 512-653 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-654 | AT&T (local phone) | Local phone company | 2012 |
| 512-655 | AT&T (local phone) | Local phone company | 2012 |
| 512-656 | AT&T Mobility | Mobile carrier | – |
| 512-657 | AT&T Mobility | Mobile carrier | – |
| 512-658 | AT&T Mobility | Mobile carrier | – |
| 512-659 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 512-660 | AT&T Mobility | Mobile carrier | 2011 |
| 512-662 | Bandwidth | Internet / business phone carrier | 2006 |
| 512-663 | Verizon Wireless | Mobile carrier | – |
| 512-664 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 512-666 | Evolve Cellular | Mobile carrier | 2011 |
| 512-669 | AT&T (local phone) | Local phone company | – |
| 512-670 | AT&T (local phone) | Local phone company | – |
| 512-671 | AT&T (local phone) | Local phone company | – |
| 512-672 | AT&T (local phone) | Local phone company | – |
| 512-673 | AT&T (local phone) | Local phone company | – |
| 512-674 | AT&T (local phone) | Local phone company | – |
| 512-676 | Teleport Communications America | Internet / business phone carrier | 2013 |
| 512-679 | MetroPCS (T-Mobile) | Mobile carrier | 2014 |
| 512-680 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-681 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-682 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-683 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-684 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-685 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-687 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 512-689 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 512-691 | Teleport Communications America | Internet / business phone carrier | – |
| 512-692 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 512-693 | AT&T (local phone) | Local phone company | – |
| 512-694 | AT&T Mobility | Mobile carrier | – |
| 512-695 | AT&T Mobility | Mobile carrier | – |
| 512-696 | AT&T Mobility | Mobile carrier | 2006 |
| 512-697 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 512-698 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-699 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 512-701 | AT&T Mobility | Mobile carrier | 2009 |
| 512-702 | Tpx Communications | Internet / business phone carrier | 2022 |
| 512-703 | AT&T (local phone) | Local phone company | – |
| 512-704 | AT&T (local phone) | Local phone company | – |
| 512-705 | AT&T Mobility | Mobile carrier | 2008 |
| 512-706 | AT&T (local phone) | Local phone company | – |
| 512-707 | AT&T (local phone) | Local phone company | – |
| 512-708 | AT&T (local phone) | Local phone company | – |
| 512-709 | T-Mobile (including Sprint) | Mobile carrier | 2006 |
| 512-710 | Bandwidth | Internet / business phone carrier | 2014 |
| 512-712 | AT&T (local phone) | Local phone company | – |
| 512-716 | AT&T (local phone) | Local phone company | – |
| 512-717 | Peerless Network Of Texas | Internet / business phone carrier | 2013 |
| 512-719 | AT&T (local phone) | Local phone company | – |
| 512-720 | Verizon Wireless | Mobile carrier | 2012 |
| 512-721 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 512-723 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-724 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-725 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-726 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 512-727 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 512-728 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 512-730 | AT&T (local phone) | Local phone company | – |
| 512-731 | T-Mobile (including Sprint) | Mobile carrier | – |
| 512-732 | AT&T (local phone) | Local phone company | – |
Showing the first 400 of 739 prefixes.
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.