·         Alliance Communications Cooperative

·         Beresford Municipal Telephone Company

·         Cheyenne River Sioux Tribal Telephone Authority

·         Faith Municipal Telephone Company

·         Fort Randall Telephone

·         Golden West Telecommunications Cooperative

·         Hills Telephone Company (An Alliance Company)

·         Interstate Telecommunications Cooperative

·         James Valley Telecommunications

·         Kennebec Telephone Company

·         Knology Community Telephone, Inc.

·         Long Lines

·         Midstate Communications

·         Mount Rushmore Telephone

·         RC Communications (A Roberts County Telephone Company)

·         Roberts County Telephone Cooperative

·         Santel Communications Cooperative

·         Splitrock Properties (An Alliance Company)

·         Stockholm-Strandburg Telephone Co. (An Interstate Company)

·         Swiftel Communications

·     TrioTel Communications, Inc.

·         Valley Telecommunications Cooperative

·         Venture Communications Cooperative

·         West River Cooperative Telephone

·         West River Telecommunications Cooperative

·         Western Telephone Company (A Venture Communications Co.)