dns3.dion.ne.jp has one IP number , which also has a corresponding reverse pointer. second.ayakari.jp point to the same IP. isv.jp, iiq.jp, l-ma.jp, i-ne.jp, dmgp.jp and at least 100 other hosts use this as a nameserver. dion.ne.jp is a domain controlled by four nameservers. Two of them are on the same IP network. Incoming mail for dion.ne.jp is handled by two mailservers at dion.ne.jp themselves. They are on the same IP network. dns3.dion.ne.jp is hosted on a server in Japan.