HOLTVILLE — CA
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLC - CA | 649C | 2 |
| COMMIO, LLC | 939H | 1 |
| PACIFIC BELL | 9740 | 1 |
| BANDWIDTH.COM CLEC, LLC - CA | 981E | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLC - CA | 649C | 2 |
| COMMIO, LLC | 939H | 1 |
| PACIFIC BELL | 9740 | 1 |
| BANDWIDTH.COM CLEC, LLC - CA | 981E | 1 |