AT&T Corp. SBCIS-SBIS (NET-99-105-192-0-1) 99.105.192.0 - 99.127.255.255 Private Customer - AT&T Internet Services SBC-99-126-106-176-29-1801241420 (NET-99-126-106-176-1) 99.126.106.176 - 99.126.106.183