Transferring a domain from one company to another normally entails the use of a unique transfer authorization code, which different companies call an EPP authorization code, a domain name password or an AuthInfo code. This code can be used as a protection measure against unsolicited transfers with all gTLD and with most ccTLD extensions. The code can be obtained only by the domain name registrant and is issued by the present registrar. It must be given to the new domain registrar company because the transfer process cannot be started without it. The code is case-sensitive and typically includes digits and special symbols, so as to stop unauthorized individuals from breaking it. Certain companies even reset the codes of domain names registered through them after a particular amount of time for greater security.