(605) 257
Prefix in NISLAND, South Dakota
Prefix Details
| Area Code | 605 |
| Prefix | 257 |
| Full Number Pattern | (605) 257-XXXX |
| Rate Center | NISLAND |
| State | South Dakota |
| Operating Company | WEST RIVER COOPERATIVE TELEPHONE COMPANY |
| Time Zone | Central / Mountain |
About the (605) 257 Prefix
The (605) 257 prefix is assigned to WEST RIVER COOPERATIVE TELEPHONE COMPANY and serves the NISLAND rate center in South Dakota. Phone numbers with this prefix are in the Central / Mountain Time Zone and are part of area code 605 which covers Sioux Falls and surrounding areas.