NORTHRIDGE — CA
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| PACIFIC BELL | 9740 | 22 |
| T-MOBILE USA, INC. | 6529 | 5 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 4 |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | 4 |
| FRACTEL, LLC | 965H | 4 |