Topic Path: Symbol Reference > Classes > TIdWhois Class
TIdWhois Class

Implements a WhoIs or Nickname client.

TIdWhois = class(TIdTCPClientCustom);

TIdWhois is a TIdTCPClientCustom descendant that implements the Nickname or Whois protocol client, as described in the Internet Standards document: 

RFC 954 - NICNAME/WHOIS Protocol  

Whois is a simple database query system that is commonly used to access domain registration records, although it can be used to access other simple directory services. 

The NICNAME/WHOIS Server is a TCP transaction based query/response server, running on the SRI-NIC machine ( or, provides netwide directory service to internet users. It is one of a series of internet name services maintained by the DDN Network Information Center (NIC) at SRI International on behalf of the Defense Communications Agency (DCA). 

The server is accessible across the Internet from user programs running on local hosts, and it delivers the full name, U.S. mailing address, telephone number, and network mailbox for DDN users who are registered in the NIC database. 

This server, together with the corresponding WHOIS Database can also deliver online look-up of individuals or their online mailboxes, network organizations, DDN nodes and associated hosts, and TAC telephone numbers. The service is designed to be user-friendly and the information is delivered in human-readable format. DCA strongly encourages network hosts to provide their users with access to this network service.

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