Transferring a domain name from one company to another normally involves the use of a special transfer authorization code, which different registrar companies call an EPP authentication code, a domain name password or an AuthInfo code. This code can be used as a security mechanism against unwanted transfer attempts with all gTLD and with most ccTLD extensions. It can be obtained only by the owner of the particular domain and is provided by the present registrar. It must be given to the new domain name registrar company because the transfer procedure cannot be started without it. The code is case-sensitive and generally includes numbers and special characters, so as to impede unauthorized people from guessing it. Certain registrars even reset the codes of domains registered through them after a particular period of time for greater safety.