mhm.wen.ru has one IP number , but the reverse is www.wen.ru. ru.wen.ru, 2a.wen.ru, www.wen.ru, gay.wen.ru, cbi.wen.ru and at least 95 other hosts point to the same IP. www.mhm.wen.ru are subdomains to this hostname. wen.ru is a domain controlled by two nameservers at spaceweb.ru. They are on the same IP network. Incoming mail for wen.ru is handled by one mailserver at wen.ru themselves. wen.ru has one IP number , which also has a corresponding reverse pointer. mhm.wen.ru is hosted on a server in Ukraine even though the hostname implies Russian Federation.