PLANO — TX
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | 69 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 21 |
| SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | 19 |
| ONVOY, LLC - TX | 903C | 17 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 11 |