MT VERNON — TX
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | 1 |
| CSC VOICE, LLC | 612K | 1 |
| T-MOBILE USA, INC. | 6529 | 1 |
| TWC IP ENABLED SERVICES, LLC | 793K | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | 1 |
| CSC VOICE, LLC | 612K | 1 |
| T-MOBILE USA, INC. | 6529 | 1 |
| TWC IP ENABLED SERVICES, LLC | 793K | 1 |