LYCOS RETRIEVER 
Whois: Whois Server
built 633 days ago
The term "graphical client" may be a bit of a misnomer for a WHOIS client, since all the data to be derived from a WHOIS server is plain text, and the protocol is a relatively static one. There is not much interaction to do with a WHOIS server. In this context, the term "graphical client" is taken to mean a WHOIS client that runs as an application on a GUI OS and uses the OS's standard GUI for user interaction.
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It automatically connects to the right WHOIS server, according to the top-level domain name, and retrieves the WHOIS record of the domain. It supports both generic domains and country code domains. Version 1.21 includes unspecified updates. Tags: Domain, Whois, WhoisThisDomain Software downloads 2007-12-13
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The thick model usually ensures consistent data and slightly faster lookups (since only one WHOIS server needs to be contacted). If a registrar goes out of business, a thick registry contains all important information (if the registrant entered correct data, and privacy features were not used to obscure the data) and ownership can be retained. But with a thin registry, the contact information may not be available (unless adequately escrowed) and it may be difficult for the rightful registrant to retain control of the domain.[1]
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To look up a user, you can try querying the whois server at the host where the user has an account. To do so, use the -h switch to specify a host:
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The WHOIS server doesn't get the name being searched for, just the hash. It's in principle possible to iterate through all possible names to see what hashes match, but this isn't practical for any at all unusual name, and of course most obvious names have already been registered.
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Whois Server