FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS
17 prefixes in 956 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 956-347 | LYFORD | 4344 | — | Yes |
| 956-398 | RAYMONDVL | 4344 | 2001-05-24 | Yes |
| 956-447 | WESLACO | 4344 | — | Yes |
| 956-487 | RIGRANDECY | 4344 | — | — |
| 956-488 | RIGRANDECY | 4344 | — | — |
| 956-573 | RIGRANDECY | 4344 | 2001-05-24 | Yes |
| 956-636 | SANTA ROSA | 4344 | — | Yes |
| 956-647 | WESLACO | 4344 | 2007-04-16 | Yes |
| 956-689 | RAYMONDVL | 4344 | — | Yes |
| 956-690 | RAYMONDVL | 4344 | — | Yes |
| 956-716 | RIGRANDECY | 4344 | — | Yes |
| 956-797 | LA FERIA | 4344 | — | Yes |
| 956-847 | ROMA | 4344 | — | Yes |
| 956-849 | ROMA | 4344 | — | Yes |
| 956-968 | WESLACO | 4344 | — | — |
| 956-969 | WESLACO | 4344 | — | — |
| 956-973 | WESLACO | 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.