The Non-classified Internet Protocol (IP) Router Network (abbreviated as "NIPRNet," but commonly written "NIPRNET"), but prevalently referred to as the "Non-classified IP Router Network," is used to exchange sensitive but unclassified information between "internal" users as well as providing users access to the Internet. NIPRNet is composed of Internet Protocol routers owned by the United States Department of Defense (DOD). It was created in the 1980s and managed by the Defense Information Systems Agency (DISA) to supersede the earlier MILNET. NIPRNET is the largest private network in the world.[citation needed] Over the last decades it has grown faster than the U.S. Department of Defense can monitor, which is why DoD spent $10 million in 2010 to map out the current state of the NIPRNET, i