www.datviet.com.vn has one IP number , which is the same as for datviet.com.vn. itctnu.com, rockviet.net and datviet.com.vn point to the same IP. datviet.com.vn is delegated to three nameservers, however one extra nameserver is listed in the zone. All nameservers are at everydns.net. All of them are on different IP networks. Incoming mail for datviet.com.vn is handled by seven mailservers having a total of 28 IP numbers. Some of them are on the same IP network. www.datviet.com.vn is hosted on a server in United States even though the hostname implies Vietnam.