Interstate Telecommunications Cooperative, Inc. Clear Lake, south dakota, united states 28 telecommunications 1954 View Company Innovative Systems mitchell, south dakota, united states 164 telecommunications 1998 View Company Valley FiberCom Volga, south dakota, united states 6 telecommunications 1952 View Company TAK Broadband sioux falls, south dakota, united states 628 telecommunications 2004 View Company sdn communications sioux falls, south dakota, united states - telecommunications 1989 View Company vast broadband sioux falls, south dakota, united states - telecommunications 1902 View Company golden west telecommunications wall, south dakota, united states - telecommunications 1916 View Company firesteel technologies, inc mitchell, south dakota, united states - telecommunications 2002 View Company starcomm limited sioux falls, south dakota, united states - telecommunications 1993 View Company west river coop tele co inc bison, south dakota, united states - telecommunications - View Company northern valley communications (nvc) aberdeen, south dakota, united states - telecommunications 1997 View Company vantage point solutions mitchell, south dakota, united states - telecommunications 2002 View Company vikor sioux falls, south dakota, united states - telecommunications 1989 View Company tower systems, inc watertown, south dakota, united states - telecommunications 1975 View Company performance development group, ltd. south dakota, united states - telecommunications - View Company swiftel brookings, south dakota, united states - telecommunications - View Company av repair milbank, south dakota, united states - telecommunications - View Company dakota woodworking watertown, south dakota, united states - telecommunications - View Company kennebec telephone company, inc. kennebec, south dakota, united states - telecommunications - View Company cheyenne river sioux tribe eagle butte, south dakota, united states - telecommunications - View Company 
