SOUTHWESTERN BELL
470 prefixes in 713 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 713-387 | HOUSTON | 9533 | — | Yes |
| 713-388 | HOUSTON | 9533 | — | Yes |
| 713-389 | SPRING | 9533 | 2008-04-15 | Yes |
| 713-390 | HOUSTON | 9533 | — | — |
| 713-391 | HOUSTON | 9533 | — | Yes |
| 713-393 | HOUSTON | 9533 | — | Yes |
| 713-394 | HOUSTON | 9533 | — | — |
| 713-402 | HOUSTON | 9533 | — | Yes |
| 713-403 | HOUSTON | 9533 | — | — |
| 713-405 | HOUSTON | 9533 | — | Yes |
| 713-407 | HOUSTON | 9533 | — | — |
| 713-413 | HOUSTON | 9533 | — | Yes |
| 713-414 | HOUSTON | 9533 | — | — |
| 713-418 | HOUSTON | 9533 | — | Yes |
| 713-420 | HOUSTON | 9533 | — | Yes |
| 713-422 | HOUSTON | 9533 | — | Yes |
| 713-426 | HOUSTON | 9533 | — | — |
| 713-427 | HOUSTON | 9533 | — | Yes |
| 713-428 | HOUSTON | 9533 | — | Yes |
| 713-430 | HOUSTON | 9533 | — | Yes |
| 713-432 | HOUSTON | 9533 | — | Yes |
| 713-433 | HOUSTON | 9533 | — | — |
| 713-434 | HOUSTON | 9533 | — | Yes |
| 713-435 | HOUSTON | 9533 | — | Yes |
| 713-436 | HSTNSUBURB | 9533 | — | — |
| 713-437 | HOUSTON | 9533 | — | Yes |
| 713-438 | HOUSTON | 9533 | — | Yes |
| 713-439 | HOUSTON | 9533 | — | — |
| 713-440 | HOUSTON | 9533 | — | Yes |
| 713-442 | HOUSTON | 9533 | — | — |
| 713-445 | HOUSTON | 9533 | 2001-12-11 | Yes |
| 713-448 | HOUSTON | 9533 | — | Yes |
| 713-450 | HOUSTON | 9533 | — | — |
| 713-451 | HOUSTON | 9533 | — | — |
| 713-453 | HOUSTON | 9533 | — | Yes |
| 713-454 | HOUSTON | 9533 | — | Yes |
| 713-455 | HOUSTON | 9533 | — | — |
| 713-456 | HOUSTON | 9533 | — | Yes |
| 713-458 | HOUSTON | 9533 | — | Yes |
| 713-460 | HOUSTON | 9533 | — | — |
| 713-461 | HOUSTON | 9533 | — | — |
| 713-462 | HOUSTON | 9533 | — | Yes |
| 713-463 | HOUSTON | 9533 | — | — |
| 713-464 | HOUSTON | 9533 | — | — |
| 713-465 | HOUSTON | 9533 | — | — |
| 713-466 | HSTNSUBURB | 9533 | — | — |
| 713-467 | HOUSTON | 9533 | — | — |
| 713-468 | HOUSTON | 9533 | — | — |
| 713-469 | HOUSTON | 9533 | 2008-09-05 | Yes |
| 713-472 | HOUSTON | 9533 | — | Yes |
| 713-473 | HOUSTON | 9533 | — | — |
| 713-475 | HOUSTON | 9533 | — | — |
| 713-476 | HOUSTON | 9533 | — | Yes |
| 713-477 | HOUSTON | 9533 | — | — |
| 713-479 | HOUSTON | 9533 | — | — |
| 713-483 | HOUSTON | 9533 | — | Yes |
| 713-484 | HOUSTON | 9533 | — | Yes |
| 713-488 | HOUSTON | 9533 | — | — |
| 713-491 | HOUSTON | 9533 | — | Yes |
| 713-495 | HOUSTON | 9533 | — | — |
| 713-497 | HOUSTON | 9533 | 2002-03-07 | Yes |
| 713-499 | HOUSTON | 9533 | — | Yes |
| 713-500 | HOUSTON | 9533 | — | — |
| 713-507 | HOUSTON | 9533 | — | — |
| 713-510 | HSTNSUBURB | 9533 | — | Yes |
| 713-512 | HOUSTON | 9533 | — | Yes |
| 713-513 | HOUSTON | 9533 | — | Yes |
| 713-514 | HOUSTON | 9533 | — | Yes |
| 713-520 | HOUSTON | 9533 | — | — |
| 713-521 | HOUSTON | 9533 | — | — |
| 713-522 | HOUSTON | 9533 | — | — |
| 713-523 | HOUSTON | 9533 | — | — |
| 713-524 | HOUSTON | 9533 | — | — |
| 713-525 | HOUSTON | 9533 | — | — |
| 713-526 | HOUSTON | 9533 | — | — |
| 713-527 | HOUSTON | 9533 | — | Yes |
| 713-528 | HOUSTON | 9533 | — | Yes |
| 713-529 | HOUSTON | 9533 | — | — |
| 713-531 | HSTNSUBURB | 9533 | 2007-11-07 | Yes |
| 713-532 | HOUSTON | 9533 | — | Yes |
| 713-533 | HOUSTON | 9533 | — | Yes |
| 713-534 | HOUSTON | 9533 | — | Yes |
| 713-535 | HOUSTON | 9533 | — | Yes |
| 713-536 | HOUSTON | 9533 | — | — |
| 713-537 | HOUSTON | 9533 | 2002-06-17 | — |
| 713-538 | HSTNSUBURB | 9533 | — | Yes |
| 713-541 | HOUSTON | 9533 | — | — |
| 713-543 | HOUSTON | 9533 | — | Yes |
| 713-544 | HOUSTON | 9533 | — | — |
| 713-546 | HOUSTON | 9533 | — | — |
| 713-547 | HOUSTON | 9533 | — | Yes |
| 713-548 | HOUSTON | 9533 | — | Yes |
| 713-551 | HOUSTON | 9533 | — | Yes |
| 713-552 | HOUSTON | 9533 | — | Yes |
| 713-556 | HOUSTON | 9533 | 2006-02-07 | Yes |
| 713-558 | HOUSTON | 9533 | — | — |
| 713-561 | HOUSTON | 9533 | — | Yes |
| 713-563 | HOUSTON | 9533 | 2002-05-15 | — |
| 713-566 | HOUSTON | 9533 | — | Yes |
| 713-567 | HOUSTON | 9533 | — | — |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.