EUREKA — CA
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| PACIFIC BELL | 9740 | 8 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | 7 |
| UNITED STATES CELLULAR - CA | 6261 | 5 |
| METROPCS, INC. | 5562 | 3 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 3 |