Transferring a domain name from one registrar company to another commonly involves the use of a special transfer code, which different registrar companies refer to as an EPP key, a domain name password or an Auth code. This code can be used as a safety mechanism against unapproved transfer attempts with all gTLD and with most ccTLD extensions. It can be obtained only by the domain owner and is provided by the current domain registrar company. It must be given to the new registrar company because the transfer cannot be initiated without it. The code is case-sensitive and generally contains digits and special symbols, so as to prevent unauthorized persons from deciphering it. Some registrars even reset the codes of domains registered through them after a particular amount of time for greater safety.