Transferring a domain from one company to another usually involves the use of a unique domain name authorization code, which different companies call an EPP authentication code, a domain name password or an Auth code. This code can be used as a protection mechanism against unauthorized transfer attempts with all gTLD and with most ccTLD extensions. It 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 domain registrar company because the transfer cannot be started without it. The code is case-sensitive and frequently comprises of digits and special characters, so as to hinder unauthenticated people from breaking it. Certain registrars even alter the codes of domain names registered through them every now and then for greater safety.
