mx01.vnn.vn has eight IP numbers. All of them are on the same IP network. bikenvn.com, hn-mail05.vnn.vn, hnicpmaa08.vnn.vn, hnicpmaa03.vnn.vn, hnicpmaa14.vnn.vn and at least five other hosts point to the same IP. vnn.vn use this as a mailserver. vnn.vn is a domain controlled by two nameservers at vnn.vn themselves. They are on different IP networks. Incoming mail for vnn.vn is handled by two mailservers having a total of 14 IP numbers. Some of them are on the same IP network. mx01.vnn.vn is hosted on eight servers in Vietnam.