OSLO — MN
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| GARDEN VALLEY TELEPHONE COMPANY - MN | 105J | 1 |
| CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN | 1123 | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| GARDEN VALLEY TELEPHONE COMPANY - MN | 105J | 1 |
| CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN | 1123 | 1 |