SAN MARCOS — TX
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| BRIGHTSPEED OF SOUTHERN TEXAS, INC. | 2140 | 11 |
| T-MOBILE USA, INC. | 6529 | 7 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | 5 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 3 |
| ONVOY, LLC - TX | 903C | 3 |