Transferring a domain name from one registrar company to another ordinarily involves the use of a unique authorization code, which different companies call an EPP authentication code, a domain password or an AuthInfo code. This code can be used as a protection mechanism against unapproved 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 current domain name registrar company. It must be given to the new registrar because the transfer cannot be started without it. The code is case-sensitive and traditionally includes numbers and special symbols, so as to obstruct unauthenticated individuals from hijacking it. Some registrars even reset the codes of domains registered through them after a particular interval of time for better security.