WINTER — WI
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK | 1155 | 1 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK | 1155 | 1 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 1 |