AT&T Corp. SIS-80-05-38-15 (NET-172-124-0-0-1) 172.124.0.0 - 172.127.255.255 Private Customer - AT&T Internet Services SBC-172-126-79-224-29-1607265023 (NET-172-126-79-224-1) 172.126.79.224 - 172.126.79.231