CALIMESA — CA
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| T-MOBILE USA, INC. | 6529 | 5 |
| FRONTIER CALIFORNIA INC. | 2319 | 4 |
| BANDWIDTH.COM CLEC, LLC - CA | 981E | 2 |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | 1 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 1 |