How to use it. Input domain or IP address in the text column. And push a check button. The input of IP adress. Four sets of number sets within three digits are connected with the dot. ex) 192.168.3.23 The input of domain name. It isn't accepted when a server name is put. Japanese domain registered in JPIN can be looked up. ex) nic.ad.jp ex) internic.net The choice of the WHOIS server. A WHIS server is chosen automatically. It can be chosen from the list, too.