# Class C Networks - Block 199.66

    199.66.0.0 - 199.66.7.0	Tyson Foods, Inc. 	(NETBLK-TBLK-TYSONET)
    199.66.8.0 - 199.66.15.0	Refco 	(NETBLK-BLK-REFCO)
    199.66.16.0 - 199.66.29.0	RealCom Office Communications, Inc. 	(NETBLK-TBLK-REALCOM)
    199.66.32.0 - 199.66.51.0	Lockheed Missiles and Space Company, Inc. 	(NETBLK-TBLK-SP1CF)
    199.66.52.0 - 199.66.63.0	Lockheed Missiles and Space Company, Inc. 	(NETBLK-SPCF)

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