sv.atw.ne.jp has one IP number , via cname to p75.atw.ne.jp , which also has a corresponding reverse pointer. sasaju.co.jp and interaction.co.jp use this as a nameserver. atw.ne.jp is a domain controlled by two nameservers on the same IP network. Incoming mail for atw.ne.jp is handled by one mailserver at atw.ne.jp themselves. sv.atw.ne.jp is hosted on a server in Japan.