The complete self devloped who is lookup using ASP.net and C# is available for download at
It uses Socket programming and connects to port 43. It almost query all domain types for who is lookup.
e.g. .in , .com, .au, .pk, .en, .uk, .us, .cn,
It has facility to add new domain type and its registarar.
In this Whois lookup project using ASP.net 2.0 you will see how to lookup for .com , .info, .in, .ac,.800,.af,.al, .art, .mobi, .br and more
domains using TcpClient and port 43