TOMAH — WI
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| BRIGHTSPEED OF WESTERN WISCONSIN, LLC | 0922 | 2 |
| UNITED STATES CELLULAR - WI | 6274 | 2 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | 2 |
| T-MOBILE USA, INC. | 6529 | 2 |
| ONVOY, LLC - WI | 225C | 1 |