SO PLACER — CA
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| PACIFIC BELL | 9740 | 10 |
| ONVOY, LLC - CA | 649C | 6 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 3 |
| CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS, INC | 3964 | 2 |
| METROPCS, INC. | 5562 | 2 |