Domain Tools website gives very useful information for domain names. It includes suggestions, whois information, domain whois history, IP check, reverse IP and many more. Many a times a user wants to check whois history for a domain name. Whois information history of a domain is important as it gives how many times it has changed nameservers and other records etc. For how long it has been used.
There is another site which also provides domain history by giving historical data on domain name for free. who.is domain archive section gives this detail. It provides with first seen whois and recently seen whois information. Though details of in between changes are not shown but first and last historical data is also important. It could be visited at: http://who.is/domain_archive-com/DOMAINNAME.tld/