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P.O. Box 197
205 Main Street
New Effington, SD 57255

605-637-5211

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ABOUT US

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Copyright 2021 Cornerstone Group | All Rights Reserved | Forms & Policies
  • Home
  • Residential
    • Fiber Area
      • Fiber Internet
      • Premium Wi-Fi
      • Digital TV
      • Voice Services
    • Copper Area
      • Copper Internet
      • Digital TV
      • Voice Services
    • Fixed Wireless Area
      • Fixed Wireless Internet
      • Fixed Wireless Big Stone Lake Area
    • Not Sure
  • Premium Wi-Fi
  • Business
  • Support
    • FAQ
    • Forms and Policies
    • Guides and Brochures
  • News
    • Newsletters
    • Blog
  • About Us
    • Mission
    • Our History
    • Scholarships
    • Board and Staff
  • Bill Pay
  • Webmail
  • Get Fiber
  • Speed Test
  • Remote Support
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