Transferring a domain name from one registrar company to another usually entails the use of a special authorization code, which different registrar companies refer to as an EPP authentication code, a domain password or an Auth-Info code. This code can be used as a protection measure against unapproved transfer attempts with all gTLD and with most ccTLD extensions. It can be obtained only by the owner of the specific domain name and is provided 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 ordinarily comprises of digits and special symbols, so as to stop unauthorized persons from breaking it. Certain companies even change the codes of domains registered through them after a given amount of time for better safety.