ns2.estore.co.jp has one IP number , which also has a corresponding reverse pointer. ns00.estore.co.jp point to the same IP. iyc.jp, cj-c.com, mift.net, kasen.biz, chaen.net and at least 100 other hosts use this as a nameserver. estore.co.jp is a domain controlled by two nameservers at estore.co.jp themselves. They are on different IP networks. Incoming mail for estore.co.jp is handled by seven mailservers having a total of 28 IP numbers. Some of them are on the same IP network. estore.co.jp has one IP number. ns2.estore.co.jp is hosted on a server in Japan.