PROSSER — WA
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA | 4521 | 2 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | 1 |
| UNITED STATES CELLULAR - WA | 6270 | 1 |
| T-MOBILE USA, INC. | 6529 | 1 |