SUNNYSIDE — WA
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA | 4521 | 3 |
| T-MOBILE USA, INC. | 6529 | 3 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | 2 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 2 |
| UNITED STATES CELLULAR - WA | 6270 | 2 |