The so-called WHOIS details of every registered domain contain info about the registrar firm, the registration and expiration dates, in addition to the names, contact number, postal address and e-mail address of the owner, the admin and the tech/billing person. WHOIS is a specific protocol that allows you to retrieve all this info through a command line or using one of the many Internet websites that offer WHOIS lookup services. All information should be up-to-date in accordance with the rules of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the information is not accurate, the domain address can be reported and the result could be its removal or losing its ownership. A few country-specific domain extensions have specific limitations in connection with the change of their WHOIS info, but in the typical case any detail can be changed easily and at any moment. Such a modification will show up on lookup sites within a day.