ns1.itou.ne.jp has one IP number , but the reverse is ns1.tahoe.everydns.net. i521.info, tingvn.com, cvclan.org, ns2.230.ro, ns.ljsf.org and at least 58 other hosts point to the same IP. itou.ne.jp and furifuri.net use this as a nameserver. itou.ne.jp is delegated to four nameservers, however all four delegated nameservers are missing in the zone and four other nameservers are listed instead. There are two duplicated IP numbers. Some of them are on the same IP network. Incoming mail for itou.ne.jp is handled by one mailserver at itou.ne.jp themselves. itou.ne.jp has one IP number. ns1.itou.ne.jp is hosted on a server in United States even though the hostname implies Japan.