The so-called WHOIS details of every registered domain name include information about the registrar company, the registration and expiration dates, as well as the names, contact number, postal address and e-mail address of the owner, the admin and the tech/billing person. WHOIS is a special protocol that allows you to retrieve this info through a command line or using one of the numerous websites that offer WHOIS lookup services. All info must be up-to-date in accordance with the regulations of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the details are not accurate, the domain name might be reported and the result could be its deletion or losing its ownership. A few country-specific domain name extensions have specific limitations concerning the modification of their WHOIS info, but in the standard case any detail can be modified openly and at any time. Such an adjustment will appear on lookup Internet sites within 1 day.