MASON — TX
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | 2 |
| HILL COUNTRY TELECOMMUNICATIONS, LLC - TX | 413F | 1 |
| FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | 2 |
| HILL COUNTRY TELECOMMUNICATIONS, LLC - TX | 413F | 1 |
| FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | 1 |