All assignees
800 prefixes in 972 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 972-500 | IRVING | 6630 | — | — |
| 972-501 | DALLAS | 9533 | — | — |
| 972-502 | DALLAS | 7229 | — | Yes |
| 972-503 | DALLAS | 9533 | — | Yes |
| 972-504 | GRANDPRARI | 9533 | — | Yes |
| 972-505 | IRVING | 7229 | — | Yes |
| 972-506 | DALLAS | 9533 | — | — |
| 972-507 | IRVING | 4344 | — | — |
| 972-508 | PROSPER | 7670 | — | — |
| 972-509 | PLANO | 4344 | — | — |
| 972-510 | IRVING | 7148 | — | Yes |
| 972-511 | XXXXXXXXXX | MULT | — | — |
| 972-512 | CARROLLTON | 7229 | — | Yes |
| 972-513 | IRVING | 4344 | — | Yes |
| 972-514 | IRVING | 4344 | — | Yes |
| 972-515 | RED OAK | 9533 | — | Yes |
| 972-516 | PLANO | 4344 | — | — |
| 972-517 | PLANO | 4344 | — | — |
| 972-518 | IRVING | 4344 | — | — |
| 972-519 | PLANO | 4344 | — | — |
| 972-520 | PLANO | 7148 | 2018-04-04 | Yes |
| 972-521 | ALLEN | 7516 | — | Yes |
| 972-522 | GRANDPRARI | 9533 | — | Yes |
| 972-523 | GRANDPRARI | 6534 | — | — |
| 972-524 | TERRELL | 9533 | — | — |
| 972-525 | WILMER | 2154 | — | Yes |
| 972-526 | PLANO | 7726 | 2002-10-23 | Yes |
| 972-527 | PLANO | 4344 | — | — |
| 972-528 | DALLAS | 9533 | — | Yes |
| 972-529 | MCKINNEY | 9533 | — | Yes |
| 972-530 | PLANO | 4344 | — | — |
| 972-531 | PLANO | 7421 | — | Yes |
| 972-532 | DALLAS | 7229 | — | Yes |
| 972-533 | GRANDPRARI | 6534 | 2004-09-02 | Yes |
| 972-534 | DLFTWTARPT | 7229 | — | Yes |
| 972-535 | PLANO | 7229 | — | Yes |
| 972-536 | IRVING | 7229 | — | Yes |
| 972-537 | LEWISVILLE | 4344 | — | Yes |
| 972-538 | LEWISVILLE | 7229 | — | Yes |
| 972-539 | LEWISVILLE | 4344 | — | — |
| 972-540 | MCKINNEY | 9533 | — | — |
| 972-541 | IRVING | 4344 | — | — |
| 972-542 | MCKINNEY | 9533 | — | — |
| 972-543 | PLANO | 7229 | — | — |
| 972-544 | FERRIS | 2154 | — | Yes |
| 972-545 | IRVING | 6630 | — | — |
| 972-546 | DALLAS | 6114 | — | Yes |
| 972-547 | MCKINNEY | 9533 | — | — |
| 972-548 | MCKINNEY | 9533 | — | — |
| 972-549 | MCKINNEY | 7670 | — | — |
| 972-550 | IRVING | 4344 | — | — |
| 972-551 | TERRELL | 9533 | — | Yes |
| 972-552 | FORNEY | 9533 | — | Yes |
| 972-553 | PLANO | 7670 | — | — |
| 972-554 | IRVING | 4344 | — | — |
| 972-555 | DIR ASST | MULT | — | — |
| 972-556 | DALLAS | 9533 | — | Yes |
| 972-557 | DALLAS | 9533 | — | — |
| 972-558 | GRANDPRARI | 9533 | — | — |
| 972-559 | DALLAS | 9533 | — | Yes |
| 972-560 | DALLAS | 7229 | — | — |
| 972-561 | GRANDPRARI | 9533 | — | Yes |
| 972-562 | MCKINNEY | 9533 | — | — |
| 972-563 | TERRELL | 9533 | — | — |
| 972-564 | FORNEY | 9533 | — | Yes |
| 972-565 | FRISCO | 6534 | 2022-06-21 | Yes |
| 972-566 | DALLAS | 9533 | — | — |
| 972-567 | GRANDPRARI | 6534 | — | — |
| 972-568 | MCKINNEY | 6630 | — | — |
| 972-569 | MCKINNEY | 9533 | — | Yes |
| 972-570 | IRVING | 4344 | — | — |
| 972-571 | GRANDPRARI | 6534 | — | — |
| 972-572 | DALLAS | 9533 | — | Yes |
| 972-573 | IRVING | 903C | — | Yes |
| 972-574 | DLFTWTARPT | 4344 | — | — |
| 972-575 | PLANO | 4344 | — | — |
| 972-576 | RED OAK | 9533 | — | Yes |
| 972-577 | PLANO | 7229 | — | — |
| 972-578 | PLANO | 4344 | — | — |
| 972-579 | IRVING | 4344 | — | — |
| 972-580 | IRVING | 4344 | — | — |
| 972-581 | DALLAS | 7229 | — | Yes |
| 972-582 | IRVING | 4344 | — | — |
| 972-583 | PLANO | 7726 | — | Yes |
| 972-584 | DALLAS | 9533 | — | Yes |
| 972-585 | GRANDPRARI | 903C | 2022-11-15 | Yes |
| 972-586 | DLFTWTARPT | 4344 | — | Yes |
| 972-587 | DALLAS | 7148 | — | Yes |
| 972-588 | DALLAS | 9533 | — | Yes |
| 972-589 | GRANDPRARI | 6529 | 2012-10-02 | Yes |
| 972-590 | DALLAS | 7516 | — | Yes |
| 972-591 | DALLAS | 9533 | — | Yes |
| 972-592 | IRVING | 6630 | — | — |
| 972-593 | IRVING | 6630 | — | — |
| 972-594 | IRVING | 4344 | — | Yes |
| 972-595 | GRANDPRARI | 9533 | — | Yes |
| 972-596 | PLANO | 4344 | — | — |
| 972-597 | ITALY | 6114 | 2012-12-18 | Yes |
| 972-598 | DALLAS | 793K | 2012-12-13 | Yes |
| 972-599 | PLANO | 4344 | — | — |
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.