The so-called WHOIS details of any registered domain contain details about the registrar company, the registration and expiration dates, plus 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 permits you to obtain this info either through a command line or through one of the many websites that offer 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 info is not legitimate, the domain address could be reported and the result could be its deletion or losing its ownership. Some country-specific domain name extensions have certain limitations concerning the editing of their WHOIS info, but in the general scenario any detail can be changed easily and at any moment. Such a modification will appear on lookup Internet sites within 24 hours.