mail.nsf.jp has one IP number , which is the same as for nsf.jp, but the reverse is www.nsf.jp. gro.cc, nsf.jp, fu-ca.com, www.nsf.jp, triumph.tc and at least 52 other hosts point to the same IP. nsf.jp use this as a mailserver. nsf.jp is delegated to five nameservers, however two delegated nameservers are missing in the zone. All nameservers are at value-domain.com. Two of them are on the same IP network. Incoming mail for nsf.jp is handled by one mailserver at nsf.jp themselves. mail.nsf.jp is hosted on a server in Japan.