DE FOREST — WI
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| BANDWIDTH.COM CLEC, LLC - WI | 007F | 2 |
| BRIGHTSPEED OF WESTERN WISCONSIN, LLC | 0922 | 2 |
| ONVOY, LLC - WI | 225C | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| BANDWIDTH.COM CLEC, LLC - WI | 007F | 2 |
| BRIGHTSPEED OF WESTERN WISCONSIN, LLC | 0922 | 2 |
| ONVOY, LLC - WI | 225C | 1 |