SSNFRNCSCO — CA
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| PACIFIC BELL | 9740 | 34 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 8 |
| T-MOBILE USA, INC. | 6529 | 8 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | 6 |
| ONVOY, LLC - CA | 649C | 5 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| PACIFIC BELL | 9740 | 34 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 8 |
| T-MOBILE USA, INC. | 6529 | 8 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | 6 |
| ONVOY, LLC - CA | 649C | 5 |