Transferring a domain from one company to another traditionally involves the use of a unique domain name authorization code, which different registrar companies refer to as an EPP authorization code, a domain name password or an Auth code. This code can be used as a safety measure against unsolicited transfer attempts with all gTLD and with most ccTLD extensions. The code can be obtained only by the owner of the specific domain name and is issued by the current registrar. It must be given to the new domain name registrar company because the transfer cannot be started without it. The code is case-sensitive and traditionally contains digits and special characters, so as to obstruct unauthenticated individuals from hijacking it. Certain domain name registrars even alter the codes of domain names registered through them after a given period of time for even greater safety.