READFIELD — WI
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| BRIGHTSPEED OF EAST CENTRAL WISCONSIN, LLC | 0898 | 1 |
| CHARTER IP ENABLED SERVICES, LLC | 792K | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| BRIGHTSPEED OF EAST CENTRAL WISCONSIN, LLC | 0898 | 1 |
| CHARTER IP ENABLED SERVICES, LLC | 792K | 1 |