FOLSOM — CA
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| PACIFIC BELL | 9740 | 21 |
| ONVOY, LLC - CA | 649C | 9 |
| BANDWIDTH.COM CLEC, LLC - CA | 981E | 7 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | 5 |
| T-MOBILE USA, INC. | 6529 | 5 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| PACIFIC BELL | 9740 | 21 |
| ONVOY, LLC - CA | 649C | 9 |
| BANDWIDTH.COM CLEC, LLC - CA | 981E | 7 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | 5 |
| T-MOBILE USA, INC. | 6529 | 5 |