SOUTHWESTERN BELL
283 prefixes in 281 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 281-465 | SPRING | 9533 | — | Yes |
| 281-466 | SPRING | 9533 | — | Yes |
| 281-469 | SATSUMA | 9533 | — | — |
| 281-470 | LA PORTE | 9533 | — | — |
| 281-471 | LA PORTE | 9533 | — | — |
| 281-474 | SEABROOK | 9533 | — | — |
| 281-476 | DEER PARK | 9533 | — | Yes |
| 281-477 | SATSUMA | 9533 | — | — |
| 281-478 | DEER PARK | 9533 | — | Yes |
| 281-479 | DEER PARK | 9533 | — | — |
| 281-480 | APOLLO | 9533 | — | — |
| 281-481 | HSTNSUBURB | 9533 | — | — |
| 281-482 | FRIENDSWD | 9533 | — | — |
| 281-483 | APOLLO | 9533 | — | — |
| 281-484 | HSTNSUBURB | 9533 | — | — |
| 281-485 | HSTNSUBURB | 9533 | — | — |
| 281-486 | APOLLO | 9533 | — | — |
| 281-487 | HSTNSUBURB | 9533 | — | — |
| 281-488 | APOLLO | 9533 | — | — |
| 281-489 | MANVEL | 9533 | — | — |
| 281-492 | BARKER | 9533 | — | Yes |
| 281-493 | HSTNSUBURB | 9533 | — | — |
| 281-495 | HSTNSUBURB | 9533 | — | — |
| 281-496 | HSTNSUBURB | 9533 | — | — |
| 281-497 | HSTNSUBURB | 9533 | — | Yes |
| 281-498 | HSTNSUBURB | 9533 | — | Yes |
| 281-509 | HSTNSUBURB | 9533 | — | Yes |
| 281-514 | BAMMEL | 9533 | — | — |
| 281-516 | TOMBALL | 9533 | — | Yes |
| 281-517 | SATSUMA | 9533 | — | — |
| 281-518 | BAMMEL | 9533 | — | — |
| 281-528 | SPRING | 9533 | — | Yes |
| 281-529 | HSTNSUBURB | 9533 | — | Yes |
| 281-530 | HSTNSUBURB | 9533 | — | — |
| 281-531 | HSTNSUBURB | 9533 | — | — |
| 281-533 | VLY LODGE | 9533 | — | Yes |
| 281-537 | BAMMEL | 9533 | — | — |
| 281-539 | BAMMEL | 9533 | — | — |
| 281-542 | DEER PARK | 9533 | — | Yes |
| 281-544 | HSTNSUBURB | 9533 | — | Yes |
| 281-545 | SMITHERSLK | 9533 | — | Yes |
| 281-550 | LANGHAMCRK | 9533 | — | — |
| 281-552 | HSTNSUBURB | 9533 | — | Yes |
| 281-556 | HSTNSUBURB | 9533 | — | Yes |
| 281-558 | HSTNSUBURB | 9533 | — | — |
| 281-560 | HSTNSUBURB | 9533 | — | Yes |
| 281-561 | HSTNSUBURB | 9533 | — | — |
| 281-564 | HSTNSUBURB | 9533 | — | — |
| 281-568 | HSTNSUBURB | 9533 | — | — |
| 281-575 | HSTNSUBURB | 9533 | — | — |
| 281-578 | BARKER | 9533 | — | — |
| 281-579 | BARKER | 9533 | — | — |
| 281-580 | BAMMEL | 9533 | — | — |
| 281-581 | LIVERPOOL | 9533 | — | Yes |
| 281-583 | BAMMEL | 9533 | — | — |
| 281-584 | HSTNSUBURB | 9533 | — | Yes |
| 281-585 | ALVIN | 9533 | — | — |
| 281-586 | BAMMEL | 9533 | — | — |
| 281-587 | BAMMEL | 9533 | — | — |
| 281-588 | HSTNSUBURB | 9533 | — | Yes |
| 281-589 | HSTNSUBURB | 9533 | — | — |
| 281-590 | HSTNSUBURB | 9533 | — | — |
| 281-591 | HSTNSUBURB | 9533 | — | Yes |
| 281-592 | CLEVELAND | 9533 | — | — |
| 281-593 | CLEVELAND | 9533 | — | Yes |
| 281-594 | HSTNSUBURB | 9533 | — | Yes |
| 281-596 | HSTNSUBURB | 9533 | — | — |
| 281-597 | HSTNSUBURB | 9533 | — | — |
| 281-599 | BARKER | 9533 | — | — |
| 281-604 | HOUSTON | 9533 | — | — |
| 281-616 | BARKER | 9533 | — | Yes |
| 281-618 | BAMMEL | 9533 | — | — |
| 281-622 | CLEVELAND | 9533 | — | Yes |
| 281-631 | BAMMEL | 9533 | — | Yes |
| 281-633 | RICHMNRNBG | 9533 | — | Yes |
| 281-646 | BARKER | 9533 | — | — |
| 281-647 | BARKER | 9533 | — | — |
| 281-648 | FRIENDSWD | 9533 | — | Yes |
| 281-649 | HSTNSUBURB | 9533 | — | — |
| 281-651 | SPRING | 9533 | — | Yes |
| 281-652 | HOUSTON | 9533 | — | Yes |
| 281-655 | TOMBALL | 9533 | — | Yes |
| 281-656 | LANGHAMCRK | 9533 | — | Yes |
| 281-659 | CLEVELAND | 9533 | — | Yes |
| 281-669 | HOUSTON | 9533 | 2002-01-28 | Yes |
| 281-675 | BARKER | 9533 | — | Yes |
| 281-679 | HSTNSUBURB | 9533 | — | — |
| 281-681 | SPRING | 9533 | — | — |
| 281-689 | SPLENDORA | 9533 | — | — |
| 281-692 | MANVEL | 9533 | — | Yes |
| 281-719 | SPRING | 9533 | — | Yes |
| 281-721 | HSTNSUBURB | 9533 | — | Yes |
| 281-725 | RICHMNRNBG | 9533 | 2006-03-07 | Yes |
| 281-727 | HOUSTON | 9533 | — | Yes |
| 281-730 | BAMMEL | 9533 | — | Yes |
| 281-742 | WESTFIELD | 9533 | — | Yes |
| 281-749 | HSTNSUBURB | 9533 | — | Yes |
| 281-752 | HSTNSUBURB | 9533 | — | Yes |
| 281-754 | HSTNSUBURB | 9533 | — | Yes |
| 281-756 | ALVIN | 9533 | — | Yes |
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.