Unclassified Internet Protocol Router Network

Overview
The Unclassified Internet Protocol Router Network is

"Used to exchange sensitive but unclassified information between "internal" users as well as providing users access to the Internet. The Unclassified Internet Protocol Router Network is composed of Internet Protocol routers owned by the United States Department of Defense (DoD). It was created by the Defense Information Systems Agency (DISA) to supersede the earlier Military Network."