199.180.0.0 - 199.180.7.255 GTE Supply (NETBLK-TBLK-GTESUPPLY) 199.180.8.0 - 199.180.14.0 Skyway Frieght Systems (NETBLK-TBLK-SKYWAY2) 199.180.16.0 - 199.180.25.0 Baptist Healthcare System (NETBLK-TBLK-BHSI2) 199.180.32.0 - 199.180.51.0 Maryland Automobile Insurance Fund (NETBLK-TBLK-MAIF)