WAUKESHA — WI
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| WISCONSIN BELL INC | 9327 | 16 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 14 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | 12 |
| T-MOBILE USA, INC. | 6529 | 8 |
| ONVOY, LLC - WI | 225C | 5 |