Phone Service go Results Found: 2 Button group with nested dropdown Platinum Alliance Communications ''Proudly serving communities in South Dakota, Minnesota and Iowa.'' ''Proudly serving communities in South Dakota, Minnesota and Iowa.'' 1400 E Aspen Blvd Brandon SD 57005 (605) 582-6311 Visit Website Silver Midco 3901 N. Louise Ave SIOUX FALLS SD 57107 (605) 271-4326