Transferring a domain from one registrar company to another generally entails the use of a special 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 unapproved transfers with all gTLD and with most ccTLD extensions. The code can be obtained only by the owner of the given domain name and is provided by the present registrar company. It must be given to the new registrar company because the transfer process cannot be started without it. The code is case-sensitive and frequently comprises of numbers and special symbols, so as to hinder unauthenticated persons from breaking it. Certain domain name registrars even reset the codes of domains registered through them after a given amount of time for greater security.