All assignees
799 prefixes in 713 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 713-500 | HOUSTON | 9533 | — | — |
| 713-501 | HOUSTON | 6534 | — | — |
| 713-502 | HOUSTON | 6534 | — | — |
| 713-503 | HOUSTON | 6534 | — | — |
| 713-504 | HOUSTON | 6534 | — | — |
| 713-505 | HOUSTON | 516C | — | Yes |
| 713-506 | HOUSTON | 6630 | — | — |
| 713-507 | HOUSTON | 9533 | — | — |
| 713-508 | HOUSTON | 6630 | — | — |
| 713-509 | HOUSTON | 6630 | — | — |
| 713-510 | HSTNSUBURB | 9533 | — | Yes |
| 713-511 | XXXXXXXXXX | MULT | — | — |
| 713-512 | HOUSTON | 9533 | — | Yes |
| 713-513 | HOUSTON | 9533 | — | Yes |
| 713-514 | HOUSTON | 9533 | — | Yes |
| 713-515 | HOUSTON | 6534 | — | — |
| 713-516 | HOUSTON | 6534 | — | — |
| 713-517 | HOUSTON | 6701 | 2005-07-27 | Yes |
| 713-518 | HOUSTON | 7399 | 2006-06-19 | Yes |
| 713-519 | HSTNSUBURB | 624H | 2023-07-05 | 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 | — | — |
| 713-530 | HOUSTON | 6701 | — | — |
| 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 |
| 713-539 | HOUSTON | 6701 | — | Yes |
| 713-540 | HOUSTON | 6534 | — | — |
| 713-541 | HOUSTON | 9533 | — | — |
| 713-542 | HOUSTON | 6506 | — | — |
| 713-543 | HOUSTON | 9533 | — | Yes |
| 713-544 | HOUSTON | 9533 | — | — |
| 713-545 | HOUSTON | 5562 | — | Yes |
| 713-546 | HOUSTON | 9533 | — | — |
| 713-547 | HOUSTON | 9533 | — | Yes |
| 713-548 | HOUSTON | 9533 | — | Yes |
| 713-549 | HOUSTON | 6630 | — | — |
| 713-550 | HOUSTON | 7670 | — | Yes |
| 713-551 | HOUSTON | 9533 | — | Yes |
| 713-552 | HOUSTON | 9533 | — | Yes |
| 713-553 | HOUSTON | 6534 | — | Yes |
| 713-554 | HOUSTON | 7715 | — | — |
| 713-555 | DIR ASST | MULT | — | — |
| 713-556 | HOUSTON | 9533 | 2006-02-07 | Yes |
| 713-557 | HOUSTON | 6534 | 2001-05-08 | — |
| 713-558 | HOUSTON | 9533 | — | — |
| 713-559 | HOUSTON | 7715 | — | — |
| 713-560 | HOUSTON | 6534 | — | — |
| 713-561 | HOUSTON | 9533 | — | Yes |
| 713-562 | HOUSTON | 6534 | — | — |
| 713-563 | HOUSTON | 9533 | 2002-05-15 | — |
| 713-564 | SEABROOK | 903C | 2021-01-04 | Yes |
| 713-565 | HUFFMAN | 903C | 2021-01-04 | Yes |
| 713-566 | HOUSTON | 9533 | — | Yes |
| 713-567 | HOUSTON | 9533 | — | — |
| 713-568 | HOUSTON | 6114 | — | Yes |
| 713-569 | HOUSTON | 6534 | — | — |
| 713-570 | HSTNSUBURB | 7138 | — | Yes |
| 713-571 | HOUSTON | 9533 | — | Yes |
| 713-572 | HOUSTON | 9533 | — | Yes |
| 713-573 | XXXXXXXXXX | 9533 | — | — |
| 713-574 | HOUSTON | 6114 | 2004-08-12 | Yes |
| 713-575 | HSTNSUBURB | 7138 | — | Yes |
| 713-576 | HOUSTON | 7138 | — | Yes |
| 713-577 | HOUSTON | 7421 | — | Yes |
| 713-578 | HOUSTON | 9533 | — | Yes |
| 713-579 | HOUSTON | 7074 | — | — |
| 713-580 | HOUSTON | 7074 | — | — |
| 713-581 | HOUSTON | 903C | — | Yes |
| 713-582 | HOUSTON | 6534 | 2001-05-08 | — |
| 713-583 | HOUSTON | 7074 | 2004-12-13 | Yes |
| 713-584 | HOUSTON | 9533 | — | Yes |
| 713-585 | HOUSTON | 9533 | — | Yes |
| 713-586 | HOUSTON | 9533 | — | Yes |
| 713-587 | HOUSTON | 9533 | — | Yes |
| 713-588 | HOUSTON | 9533 | — | Yes |
| 713-589 | HOUSTON | 9533 | — | Yes |
| 713-590 | HOUSTON | 671J | — | — |
| 713-591 | HOUSTON | 6534 | — | Yes |
| 713-592 | HOUSTON | 9533 | — | Yes |
| 713-593 | HOUSTON | 6630 | — | — |
| 713-594 | HOUSTON | 6534 | — | — |
| 713-595 | HOUSTON | 671J | — | — |
| 713-596 | HOUSTON | 9533 | — | — |
| 713-597 | HOUSTON | 903C | 2014-01-22 | Yes |
| 713-598 | HOUSTON | 6534 | — | — |
| 713-599 | 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.