Summary
ns1.mail.ru has one IP number , which also has a corresponding reverse pointer.
db.ru,
bk.ru,
talk.ru,
list.ru,
port.ru and at least 70 other hosts use this as a nameserver.
mail.ru is a domain controlled by six nameservers at
mail.ru themselves. Some of them are on the same IP network. Incoming mail for
mail.ru is handled by one mailserver also at
mail.ru.
mail.ru has four IP numbers. All of them are on the same IP network.
ns1.mail.ru is hosted on a server in Russian Federation.