ASN 11712 - AT&T Services Inc.Organization : AT&T Services Inc.Total Countries Listed: 1Total IP Ranges Listed: 7United States of America - IP Ranges: 7IP Range List72.157.216.0/2272.157.220.0/2472.157.240.0/20139.76.8.0/21139.76.53.0/24139.76.64.0/18139.76.224.0/19