WAUSAU — WI
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER NORTH INC. - WI | 0886 | 15 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 6 |
| NEW CELL DBA CELLCOM | 6692 | 5 |
| LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | 2 |
| T-MOBILE USA, INC. | 6529 | 2 |