Summary
mail.start.vn has one IP number , which is the same as for
start.vn, but no corresponding reverse pointer.
hssv.vn,
itus.vn,
apcs.vn,
vgac.net,
19st.net and at least 85 other hosts point to the same IP.
start.vn use this as a mailserver.
start.vn is delegated to three nameservers, however one delegated nameserver is missing in the zone and one other nameserver is listed instead. Two nameservers have the same IP number. Two of them are on the same IP network. Incoming mail for
start.vn is handled by one mailserver at
start.vn themselves.
mail.start.vn is hosted on a server in Vietnam.