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
Certified firewall ‘wizards’ help SDN protect customer networks
Businesses that subscribe to SDN Communications’ Managed Firewall Service enjoy advantages. For one, customers may contact the company no matter what type of cybersecurity challe...
Read More
SDN’s connectivity reaches far beyond South Dakota
The South Dakota-based network reaches into eight other states in the region and, from there, ties cooperatively into other networks and extends across the United States....
Read More
Burden of protecting information is heavy and growing
A new report by the Center for Strategic and International Studies and the security software company McAfee estimates that cybercrime costs the world nearly $600 billion a year....
Read More
Computer immersion program teaches kids to think critically
Older students at Lowell Elementary School in Sioux Falls coded laptop computers to build images of multistory structures. Others programmed small, robotic vehicles to stop, go or ...
Read More