Transferring a domain from one registrar company to another normally entails the use of a special transfer code, which different registrar companies call an EPP key, a domain password or an Auth code. This code can be used as a safety measure against unsanctioned transfer attempts with all generic and with most country-code extensions. It can be obtained only by the owner of the particular domain name and is issued by the present domain name registrar company. It must be given to the new registrar because the transfer cannot be started without it. The code is case-sensitive and generally includes numbers and special characters, so as to obstruct unauthorized people from hijacking it. Certain registrar companies even alter the codes of domains registered through them every once in a while for even greater security.