Transferring a domain from one registrar company to another normally entails the use of a unique transfer authorization code, which different companies call an EPP authorization code, a domain password or an Auth-Info code. This code can be used as a protection measure against unsanctioned transfer attempts with all gTLD and with most ccTLD extensions. The code can be obtained only by the domain registrant and is issued by the present registrar. It must be given to the new domain registrar company because the transfer process cannot be initiated without it. The code is case-sensitive and commonly contains digits and special characters, so as to stop unauthorized persons from breaking it. Certain companies even reset the codes of domains registered through them after a particular interval of time for even greater safety.