sry , my Eng Grammar Suxx
oh , this example just send data to whois.ripe.net and parse response to Text Item ,

Some knowledge of the protocol can be usefull

http://en.wikipedia.org/wiki/WHOIS

also try this example...

http://209.85.135.104/search?q=cache:zFLtssWT1DwJ:www.stewshack.com/aspnet/WhoIs.aspx&hl=ru&ct=clnk&cd=4