OCSD PDTN — CA
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| PACIFIC BELL | 9740 | 5 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7147 | 2 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | 2 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | 2 |
| COMCAST PHONE OF CALIFORNIA, LLC | 394L | 1 |