The so-called WHOIS details of every registered domain contain info about the registrar company, the registration and expiration dates, as well as the names, telephone number, postal address and e-mail address of the owner, the admin and the tech/billing person. WHOIS is a special protocol that allows you to retrieve this information through a command line or by using one of the numerous sites that provide WHOIS lookup services. All info should 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 might be its deletion or losing its ownership. Several country-specific domain name extensions have certain limitations for the editing of their WHOIS details, but in the typical situation any detail can be changed openly and at any moment. Such a modification will appear on lookup sites within 1 day.