About Us

SDN’s network of over 30,000 miles of fiber connects the area’s leading businesses. With a 91% customer satisfaction rating (a record high for the industry), SDN’s state-of-the-art telecommunications services also come with unparalleled customer service and support.

About SDN

SDN is the biggest fiber-optic network in the region. Find out more about how SDN powers intelligent networks across the Midwest.

History / Ownership

SDN Communications was formed in 1989 and is owned by 17 of the independent telephone companies throughout South Dakota.

Community Service

Each year, SDN and its employees give back to the local community through donations, sponsorships and volunteer projects.

Employee Directory

Our employees are not only technical experts, they are also great people. Click here to find out more or call 1-800-247-1442 and SDN can direct you to anyone you’re looking for.

Career Opportunities

Interested in a job at SDN? Find out more about current openings, submitting a resume and office culture.

Stimulus Award

In 2009, SDN was among the top 1 percent of broadband companies to receive a federal Broadband Opportunities Technology Program (BTOP) grant. With the $20 million grant and a $5 million investment from SDN, over 300 anchor institutions in underserved communities will have access to high-speed broadband.

Uptime University

SDN Communications' new education series, SDN Uptime University, will bring you the industry experts that can help keep your business data running efficiently and securely.

What is Uptime?

At its essence, internet is internet and telephone service is telephone service. It’s nice to know it’s just working. Less downtime means more uptime for your network…and more time for you to focus on your business, family or free time. So, enjoy the uptime.