02.dnsv.jp has one IP number , which also has a corresponding reverse pointer. ns2.ikeoka.com point to the same IP. rus.jp, 7ip.jp, y-y.jp, dpw.jp, abgo.jp and at least 100 other hosts use this as a nameserver. dnsv.jp is a domain controlled by two nameservers at interq.or.jp. They are on the same IP network. 02.dnsv.jp is hosted on a server in Japan.