The so-called WHOIS details of every single registered domain contain information about the registrar organization, the registration and expiration dates, and also the names, phone number, postal address and email address of the owner, the admin and the tech/billing person. WHOIS is a special protocol that lets you obtain all of this information either through a command line or by using one of the many websites which provide WHOIS lookup services. All details ought to be up-to-date as per the regulations of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the info is not correct, the internet domain could be reported and the result may be its removal or losing its ownership. A few country-specific domain extensions have specific limitations for the modification of their WHOIS details, but in the general scenario any detail can be modified freely and at any time. Such an adjustment will show up on lookup websites within 24 hours.