NRICHLDHLS — TX
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| SOUTHWESTERN BELL | 9533 | 14 |
| ONVOY, LLC - TX | 903C | 6 |
| LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | 4 |
| LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | 3 |
| BANDWIDTH.COM CLEC, LLC - TX | 004F | 2 |