HERMISTON — OR
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| UNITED STATES CELLULAR - OR | 6349 | 3 |
| T-MOBILE USA, INC. | 6529 | 3 |
| QWEST CORPORATION | 9638 | 3 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | 2 |
| INVOXIO INCORPORATED | 158H | 1 |