192.236.1.0 - 192.236.8.0 Overseas Private Investment Corp. (NETBLK-TBLK-OPIC) 192.236.16.0 - 192.236.25.0 Marshfield Medical Research & Education Foundation (NETBLK-TBLK-MFLDCLIN) 192.236.32.0 - 192.236.63.255 University of South Dakota (NETBLK-TBLK-COYOTENET)