ns1.poishi.com has one IP number , which also has a corresponding reverse pointer. avt.ru, glm.ru, sej.ru, aka.ru, igt.ru and at least 100 other hosts use this as a nameserver. poishi.com is a domain controlled by two nameservers at poishi.com themselves. They are on different IP networks. Incoming mail for poishi.com is handled by one mailserver also at poishi.com. poishi.com has one IP number. ns1.poishi.com is hosted on a server in Germany.