ROCKWALL — TX
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| T-MOBILE USA, INC. | 6529 | 5 |
| SOUTHWESTERN BELL | 9533 | 5 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | 4 |
| PEOPLES COMMUNICATION, INC. -TX | 135H | 2 |
| ONVOY, LLC - TX | 903C | 2 |