mail.1gb.ru has eight IP numbers. All of them are on the same IP network. hostmail.2com.ru cnames to this hostname. vitis.ru, qfolk.ru, donkom.ru, line61.ru, medros.ru and at least 16 other hosts point to the same IP. p2w.ru, 1212.ru, vkpa.ru, udan.ru, cdum.ru and at least 100 other hosts use this as a mailserver. 1gb.ru is a domain controlled by two nameservers at 1gb.ru themselves. They are on different IP networks. Incoming mail for 1gb.ru is handled by one mailserver having a total of four IP numbers. All of them are on the same IP network. 1gb.ru has one IP number. mail.1gb.ru is hosted on eight servers in Russian Federation.