AT&T Corp. SIS-80-7-23-2013 (NET-23-112-0-0-1) 23.112.0.0 - 23.127.255.255 Private Customer - AT&T Internet Services SBC-23-118-8-48-28-1804021617 (NET-23-118-8-48-1) 23.118.8.48 - 23.118.8.63