CARROLLTON — TX
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | 23 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 5 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7148 | 5 |
| ONVOY, LLC - TX | 903C | 5 |
| LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | 4 |