ZEPHYR — TX
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | 1 |
| IP HORIZON LLC | 515J | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | 1 |
| IP HORIZON LLC | 515J | 1 |