198.254.0.0 - 198.254.15.0 Alcoa - Fujikura (NETBLK-TBLK-ALC-FUJIKURA) 198.254.15.0 ALCOA FUJIKURA LTD. (NET-SAT-AFL) 198.254.16.0 - 198.254.25.0 Methodist Hospital of Memphis (NETBLK-TBLK-METH-MEM) 198.254.32.0 - 198.254.63.0 Blue Cross Blue Shield of Connecticut (NETBLK-BCBSCT)