All assignees
800 prefixes in 972 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 972-300 | CARROLLTON | 7670 | — | — |
| 972-301 | DALLAS | 9533 | — | Yes |
| 972-302 | MCKINNEY | 6529 | — | Yes |
| 972-303 | PLANO | 4344 | — | Yes |
| 972-304 | LEWISVILLE | 4344 | — | — |
| 972-305 | GRANDPRARI | 6591 | — | — |
| 972-306 | CARROLLTON | 4344 | — | — |
| 972-307 | CARROLLTON | 4344 | — | — |
| 972-308 | DALLAS | 516C | — | Yes |
| 972-309 | PLANO | 7726 | — | Yes |
| 972-310 | GRANDPRARI | 6534 | 2004-09-10 | Yes |
| 972-311 | XXXXXXXXXX | MULT | — | — |
| 972-312 | PLANO | 7726 | — | Yes |
| 972-313 | IRVING | 4344 | — | Yes |
| 972-314 | GRANDPRARI | 903C | — | Yes |
| 972-315 | LEWISVILLE | 4344 | — | — |
| 972-316 | LEWISVILLE | 4344 | — | Yes |
| 972-317 | LEWISVILLE | 4344 | — | — |
| 972-318 | LEWISVILLE | 4344 | — | Yes |
| 972-319 | GRANDPRARI | 6630 | — | — |
| 972-320 | GRANDPRARI | 6630 | — | — |
| 972-321 | GRANDPRARI | 6630 | — | — |
| 972-322 | GRANDPRARI | 6534 | — | — |
| 972-323 | CARROLLTON | 4344 | — | — |
| 972-324 | FRISCO | 7229 | 2017-05-18 | Yes |
| 972-325 | SEAGOVILLE | 6114 | 2005-09-21 | Yes |
| 972-326 | IRVING | 6630 | — | — |
| 972-327 | TERRELL | 5562 | 2020-12-22 | Yes |
| 972-328 | DALLAS | 128L | 2025-12-29 | Yes |
| 972-329 | DALLAS | 9533 | — | — |
| 972-330 | ENNIS | 903C | — | Yes |
| 972-331 | DALLAS | 903C | — | — |
| 972-332 | ALLEN | 7421 | — | Yes |
| 972-333 | GRANDPRARI | 6529 | — | Yes |
| 972-334 | FRISCO | 9533 | — | — |
| 972-335 | FRISCO | 9533 | — | — |
| 972-336 | GRANDPRARI | 9533 | — | Yes |
| 972-337 | GRANDPRARI | 9533 | — | — |
| 972-338 | DALLAS | 9533 | — | Yes |
| 972-339 | GRANDPRARI | 9533 | — | Yes |
| 972-340 | DALLAS | 9533 | — | — |
| 972-341 | DALLAS | 9533 | — | Yes |
| 972-342 | GRANDPRARI | 6534 | — | — |
| 972-343 | GRANDPRARI | 9533 | — | Yes |
| 972-344 | DALLAS | 9533 | — | — |
| 972-345 | GRANDPRARI | 6534 | — | — |
| 972-346 | PROSPER | 9533 | — | Yes |
| 972-347 | PROSPER | 9533 | — | Yes |
| 972-348 | DALLAS | 9533 | — | Yes |
| 972-349 | DALLAS | 9533 | — | Yes |
| 972-350 | LEWISVILLE | 7516 | — | Yes |
| 972-351 | WAXAHACHIE | 9533 | 2001-04-19 | Yes |
| 972-352 | GRANDPRARI | 9533 | — | Yes |
| 972-353 | LEWISVILLE | 4344 | — | — |
| 972-354 | DALLAS | 671J | — | — |
| 972-355 | LEWISVILLE | 4344 | — | — |
| 972-356 | GRANDPRARI | 6630 | — | — |
| 972-357 | FORNEY | 903C | — | Yes |
| 972-358 | GRANDPRARI | 6506 | 2004-08-02 | Yes |
| 972-359 | ALLEN | 9533 | — | Yes |
| 972-360 | CARROLLTON | 7148 | — | Yes |
| 972-361 | DALLAS | 9533 | — | — |
| 972-362 | DALLAS | 9533 | — | Yes |
| 972-363 | MCKINNEY | 7670 | — | Yes |
| 972-364 | DALLAS | 9533 | — | Yes |
| 972-365 | GRANDPRARI | 6529 | — | Yes |
| 972-366 | VENUS | 2154 | — | Yes |
| 972-367 | DALLAS | 7229 | — | — |
| 972-368 | DALLAS | 9533 | — | — |
| 972-369 | MCKINNEY | 9533 | — | Yes |
| 972-370 | FRISCO | 9533 | — | Yes |
| 972-371 | DALLAS | 9533 | — | Yes |
| 972-372 | PLANO | 7229 | — | Yes |
| 972-373 | DALLAS | 9533 | — | Yes |
| 972-374 | IRVING | 7229 | — | Yes |
| 972-375 | GRANDPRARI | 7229 | — | Yes |
| 972-376 | DALLAS | 9533 | — | — |
| 972-377 | FRISCO | 9533 | — | — |
| 972-378 | PLANO | 4344 | — | — |
| 972-379 | PLANO | 4344 | — | Yes |
| 972-380 | DALLAS | 9533 | — | — |
| 972-381 | DALLAS | 9533 | — | Yes |
| 972-382 | CELINA | 9533 | — | Yes |
| 972-383 | DALLAS | 9533 | — | Yes |
| 972-384 | PLANO | 7670 | — | — |
| 972-385 | DALLAS | 9533 | — | — |
| 972-386 | DALLAS | 9533 | — | — |
| 972-387 | DALLAS | 9533 | — | — |
| 972-388 | DALLAS | 9533 | — | Yes |
| 972-389 | CARROLLTON | 4344 | — | — |
| 972-390 | ALLEN | 9533 | — | — |
| 972-391 | DALLAS | 9533 | — | Yes |
| 972-392 | DALLAS | 9533 | — | — |
| 972-393 | LEWISVILLE | 4344 | — | — |
| 972-394 | CARROLLTON | 4344 | — | — |
| 972-395 | CARROLLTON | 4344 | — | Yes |
| 972-396 | ALLEN | 9533 | — | — |
| 972-397 | GRANDPRARI | 6630 | — | — |
| 972-398 | PLANO | 7726 | — | — |
| 972-399 | IRVING | 4344 | — | 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.