SEATTLE — WA
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| QWEST CORPORATION | 9638 | 235 |
| T-MOBILE USA, INC. | 6529 | 87 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | 57 |
| ONVOY, LLC - WA | 483E | 54 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 49 |