ARGONNE — WI
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER COMMUNICATIONS OF WISCONSIN LLC | 0870 | 1 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | 1 |
| METRO SOUTHWEST PCS, LLP | 9759 | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER COMMUNICATIONS OF WISCONSIN LLC | 0870 | 1 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | 1 |
| METRO SOUTHWEST PCS, LLP | 9759 | 1 |