COLFAX — CA
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLC - CA | 649C | 2 |
| FRONTIER CALIFORNIA INC. | 4420 | 1 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | 1 |
| FRACTEL, LLC | 965H | 1 |
| BANDWIDTH.COM CLEC, LLC - CA | 981E | 1 |