199.30.0.0 - 199.30.15.0 Sara Lee Bakery (NETBLK-TBLK-SLBNET) 199.30.16.0 - 199.30.31.0 MICOM Communications Corp. (NETBLK-TBLK-MICOM) 199.30.32.0 - 199.30.45.0 Group Health Northwest (NETBLK-TBLK-GHNW)