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SDN has the largest fiber optic network in the region.

About SDN

SDN Communications is the premier business-to-business broadband service provider in the region that also provides the managed cybersecurity products and remote network monitoring to build a more secure business network.

Established in 1989, the organization has more than 25 years of experience and 160 employees to provide quality service, create new and innovative services and return value to our member companies and customers – it’s why we exist.

We’re passionate about customer service and bringing a human touch to technology.

SDN’s main offices are part of a three-building campus in Sioux Falls along West 10th Street. Employees also work out of the data center located just northwest of town along Interstate 90. We also have offices in Rapid City, Pierre and Blue Earth, MN.