PITTSBURG — CA
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| PACIFIC BELL | 9740 | 6 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | 2 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 2 |
| BOOST SUBSCRIBERCO L.L.C. | 490J | 1 |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | 1 |