WASHINGTON — PA
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | 11 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 6 |
| VERIZON PENNSYLVANIA, INC. | 9208 | 6 |
| LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | 4 |
| AERIAL COMMUNICATIONS, INC. | 6701 | 3 |