mail.tron.ru has one IP number , via cname to ghs.google.com , but the reverse is bw-in-f121.1e100.net. tastl.com, mail.qr.cz, mail.vox.in, mail.ali.as, wolicki.com and at least 100 other hosts point to the same IP. tron.ru is a domain controlled by two nameservers at timeweb.ru. They are on different IP networks. Incoming mail for tron.ru is handled by seven mailservers having a total of 28 IP numbers. Some of them are on the same IP network. tron.ru has one IP number. mail.tron.ru is hosted on a server in United States even though the hostname implies Russian Federation.