The so-called WHOIS details of any registered domain name contain info about the registrar organization, the registration and expiration dates, along with the names, telephone number, postal address and email address of the owner, the administrator and the tech/billing person. WHOIS is a specific protocol that enables you to obtain all this information either through a command line or via one of the many sites which provide WHOIS lookup services. All information ought to be up-to-date as per the regulations of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the information is not correct, the domain name could be reported and the result could be its removal or losing its ownership. Several country-specific domain address extensions have certain limitations concerning the change of their WHOIS details, but in the typical situation any detail can be modified freely and at any time. Such an adjustment will show up on lookup Internet sites within twenty four hours.