Transferring a domain from one company to another normally entails the use of a special transfer code, which different companies refer to as an EPP key, a domain name password or an Auth code. This code can be used as a safety measure against unsanctioned transfers with all gTLD and with most ccTLD extensions. It can be obtained only by the domain registrant and is issued by the present domain registrar company. It must be given to the new registrar company because the transfer process cannot be initiated without it. The code is case-sensitive and ordinarily contains numbers and special symbols, so as to obstruct unauthenticated people from cracking it. Certain registrar companies even change the codes of domain names registered through them from time to time for greater safety.