Business Broadband Provider. Cybersecurity Leader.

SDN Communications' network of more than 45,000 miles of fiber connects the area’s leading businesses. 
With a 91 percent 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.

SDN is the biggest fiber-optic network in the region.
Find out how to harness the power of SDN's reliable network that stretches across the Midwest.

Recent SDN Blogs
Businesses should be on constant alert for fraudulent email
Business organizations in Yankton have been under attack lately. Unidentified, profit-seeking scammers have sent several bogus emails to business people and civic groups in the sou...
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World-class internet connectivity coming to homes and businesses in Beresford
The Beresford Municipal Telephone Company will invest about $5 million to significantly upgrade connectivity for internet and phone services....
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Sex, lies and possibly videotape: Beware of sextortion
The incidence of sextortion has continued to rise in recent years. Parents, in particular, should beware. But anyone can be a victim of sextortion....
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Cyber threats are real and stakes are high
Good preparation for bad weather won’t change the forecast, cybersecurity expert Bryce Austin writes. In contrast, good cybersecurity planning can significantly impact outcomes....
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