The so-called WHOIS details of each registered domain include details about the registrar company, the registration and expiration dates, plus the names, telephone number, postal address and e-mail address of the owner, the admin and the tech/billing person. WHOIS is a specific protocol that enables you to get this info either through a command line or by using one of the numerous websites which provide WHOIS lookup services. All info should be up-to-date as per the rules of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the information is not legitimate, the domain address could be reported and the result may be its deletion or losing its ownership. Several country-specific internet domain extensions have specific limitations concerning the change of their WHOIS information, but in the standard case any detail can be edited easily and at any time. Such a change will appear on lookup Internet sites within 1 day.