- SD Public Utilities Commission - www.state.sd.us/puc
- SD Bureau of Information & Telecommunications - www.state.sd.us/bit
- Federal Communications Commission - www.fcc.gov
- NTCA - National Telephone Cooperative Association - www.ntca.org
- OPASTCO - Organization for Protection & Advancement of Small Telephone Company - www.opastco.org
- Rural Utility Service - www.usda.gov/rus/telecom
- USTA – United States Telephone Association - www.usta.org
