The so-called WHOIS details of any registered domain name include info about the registrar company, the registration and expiration dates, as well as the names, phone number, postal address and email address of the owner, the administrator and the tech/billing person. WHOIS is a special protocol that lets you get all this information through a command line or using one of the many websites that offer WHOIS lookup services. All contact details should be up-to-date in accordance with the policies of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the info is not accurate, the internet domain could be reported and the result may be its removal or losing its ownership. A few country-specific domain name extensions have certain limitations regarding the editing of their WHOIS information, but in the general situation any detail can be edited openly and at any moment. Such a change will show up on lookup sites within a day.