The so-called WHOIS details of every registered domain name contain information about the registrar organization, the registration and expiration dates, in addition to the names, contact number, postal address and email address of the owner, the administrator and the tech/billing person. WHOIS is a special protocol that permits you to retrieve all of this info through a command line or by using one of the numerous websites that offer WHOIS lookup services. All info ought to be up-to-date in line with the rules of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the details are not accurate, the domain may be reported and the result could be its removal or losing its ownership. A few country-specific domain name extensions have specific limitations regarding the change of their WHOIS details, but in the standard scenario any detail can be modified openly and at any moment. Such an adjustment will show up on lookup sites within a day.