FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS
183 prefixes in 972 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 972-205 | PLANO | 4344 | — | — |
| 972-208 | PLANO | 4344 | — | — |
| 972-219 | LEWISVILLE | 4344 | — | — |
| 972-221 | LEWISVILLE | 4344 | — | — |
| 972-240 | PLANO | 4344 | — | — |
| 972-242 | CARROLLTON | 4344 | — | — |
| 972-245 | CARROLLTON | 4344 | — | — |
| 972-251 | IRVING | 4344 | — | Yes |
| 972-252 | IRVING | 4344 | — | — |
| 972-253 | IRVING | 4344 | — | — |
| 972-254 | IRVING | 4344 | — | — |
| 972-255 | IRVING | 4344 | — | — |
| 972-256 | IRVING | 4344 | — | Yes |
| 972-257 | IRVING | 4344 | — | — |
| 972-258 | IRVING | 4344 | — | — |
| 972-259 | IRVING | 4344 | — | Yes |
| 972-261 | IRVING | 4344 | — | Yes |
| 972-271 | PLANO | 4344 | — | — |
| 972-272 | PLANO | 4344 | — | — |
| 972-273 | IRVING | 4344 | — | Yes |
| 972-276 | PLANO | 4344 | — | — |
| 972-278 | PLANO | 4344 | — | — |
| 972-281 | IRVING | 4344 | — | Yes |
| 972-295 | PLANO | 4344 | — | Yes |
| 972-303 | PLANO | 4344 | — | Yes |
| 972-304 | LEWISVILLE | 4344 | — | — |
| 972-306 | CARROLLTON | 4344 | — | — |
| 972-307 | CARROLLTON | 4344 | — | — |
| 972-313 | IRVING | 4344 | — | Yes |
| 972-315 | LEWISVILLE | 4344 | — | — |
| 972-316 | LEWISVILLE | 4344 | — | Yes |
| 972-317 | LEWISVILLE | 4344 | — | — |
| 972-318 | LEWISVILLE | 4344 | — | Yes |
| 972-323 | CARROLLTON | 4344 | — | — |
| 972-353 | LEWISVILLE | 4344 | — | — |
| 972-355 | LEWISVILLE | 4344 | — | — |
| 972-366 | VENUS | 2154 | — | Yes |
| 972-378 | PLANO | 4344 | — | — |
| 972-379 | PLANO | 4344 | — | Yes |
| 972-389 | CARROLLTON | 4344 | — | — |
| 972-393 | LEWISVILLE | 4344 | — | — |
| 972-394 | CARROLLTON | 4344 | — | — |
| 972-395 | CARROLLTON | 4344 | — | Yes |
| 972-399 | IRVING | 4344 | — | Yes |
| 972-403 | PLANO | 4344 | — | Yes |
| 972-412 | PLANO | 4344 | — | — |
| 972-413 | IRVING | 4344 | — | Yes |
| 972-414 | PLANO | 4344 | — | — |
| 972-416 | CARROLLTON | 4344 | — | — |
| 972-417 | CARROLLTON | 4344 | — | — |
| 972-418 | CARROLLTON | 4344 | — | — |
| 972-420 | LEWISVILLE | 4344 | — | — |
| 972-422 | PLANO | 4344 | — | — |
| 972-423 | PLANO | 4344 | — | — |
| 972-424 | PLANO | 4344 | — | — |
| 972-425 | DLFTWTARPT | 4344 | — | — |
| 972-429 | PLANO | 4344 | — | — |
| 972-434 | LEWISVILLE | 4344 | — | — |
| 972-435 | MAYPEARL | 2154 | — | Yes |
| 972-436 | LEWISVILLE | 4344 | — | — |
| 972-438 | IRVING | 4344 | — | — |
| 972-441 | WILMER | 2154 | — | Yes |
| 972-442 | PLANO | 4344 | — | — |
| 972-445 | IRVING | 4344 | — | Yes |
| 972-446 | CARROLLTON | 4344 | — | — |
| 972-449 | PALMER | 2154 | — | Yes |
| 972-453 | DLFTWTARPT | 4344 | — | Yes |
| 972-456 | DLFTWTARPT | 4344 | — | Yes |
| 972-459 | LEWISVILLE | 4344 | — | Yes |
| 972-461 | PLANO | 4344 | — | — |
| 972-462 | LEWISVILLE | 4344 | — | Yes |
| 972-463 | PLANO | 4344 | — | — |
| 972-465 | IRVING | 4344 | — | Yes |
| 972-466 | CARROLLTON | 4344 | — | — |
| 972-468 | PLANO | 4344 | — | Yes |
| 972-471 | LEWISVILLE | 4344 | — | Yes |
| 972-473 | PLANO | 4344 | — | — |
| 972-475 | PLANO | 4344 | — | — |
| 972-478 | CARROLLTON | 4344 | — | Yes |
| 972-485 | PLANO | 4344 | — | — |
| 972-487 | PLANO | 4344 | — | — |
| 972-491 | PLANO | 4344 | — | — |
| 972-492 | CARROLLTON | 4344 | — | — |
| 972-494 | PLANO | 4344 | — | — |
| 972-495 | PLANO | 4344 | — | — |
| 972-496 | PLANO | 4344 | — | — |
| 972-507 | IRVING | 4344 | — | — |
| 972-509 | PLANO | 4344 | — | — |
| 972-513 | IRVING | 4344 | — | Yes |
| 972-514 | IRVING | 4344 | — | Yes |
| 972-516 | PLANO | 4344 | — | — |
| 972-517 | PLANO | 4344 | — | — |
| 972-518 | IRVING | 4344 | — | — |
| 972-519 | PLANO | 4344 | — | — |
| 972-525 | WILMER | 2154 | — | Yes |
| 972-527 | PLANO | 4344 | — | — |
| 972-530 | PLANO | 4344 | — | — |
| 972-537 | LEWISVILLE | 4344 | — | Yes |
| 972-539 | LEWISVILLE | 4344 | — | — |
| 972-541 | IRVING | 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.