ALLEN — TX
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| SOUTHWESTERN BELL | 9533 | 9 |
| ONVOY, LLC - TX | 903C | 7 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 4 |
| LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | 3 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7148 | 3 |