BERLIN — WI
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 2 |
| BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC | 0924 | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | 1 |
| TWC IP ENABLED SERVICES, LLC | 793K | 1 |