Whois Tool is a client utility that communicates with WHOIS servers located around the world to obtain domain registration information. Whois is a protocol for submitting a query to a database for determining the owner of a domain name, an IP network, or an autonomous system number.

A powerful but easy to use whois component which is fully multithreaded and 100% RFC 954 compliant. It can perform recursive whois queries and find whois servers for any top level domain on its own and query them. This tool is perfectly suited to hosting companies who wish to add a reliable Whois search, allowing customers to lookup and register available domain names.