HAYWARD — WI
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK | 1155 | 2 |
| ONVOY, LLC - WI | 225C | 1 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | 1 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 1 |
| NORVADO, INC. | 8615 | 1 |