blueroom.att.com has one IP number , via cname to attblueroom.com , but the reverse is dsl.bellsouth.net. myatt.net, 10giay.biz, sonhuy.com, my.att.net, pwp.att.net and at least 37 other hosts point to the same IP. att.com is a domain controlled by three nameservers at attdns.com. All of them are on different IP networks. Incoming mail for att.com is handled by three mailservers having a total of eight IP numbers. There are six duplicated IP numbers. Some of them are on the same IP network. att.com has two IP numbers. They are on different IP networks. blueroom.att.com is hosted on a server in United States.