Transferring a domain from one company to another commonly entails the use of a special transfer code, which different companies refer to as an EPP authentication code, a domain password or an Auth-Info code. This code can be used as a safety mechanism against unsanctioned transfer attempts with all gTLD and with most ccTLD extensions. The code can be obtained only by the owner of the specific domain and is issued by the current domain registrar company. It must be given to the new registrar because the transfer process cannot be started without it. The code is case-sensitive and often includes digits and special symbols, so as to hinder unauthorized people from deciphering it. Some domain registrars even change the codes of domains registered through them after a particular period of time for even better safety.