Transferring a domain name from one registrar company to another commonly entails the use of a special transfer authorization code, which different registrar companies refer to as an EPP authorization code, a domain password or an Auth-Info code. This code can be used as a security measure against unsanctioned transfer attempts with all gTLD and with most ccTLD extensions. It can be obtained only by the owner of the given domain name and is issued by the present registrar company. It must be given to the new domain registrar company because the transfer cannot be initiated without it. The code is case-sensitive and normally comprises of numbers and special symbols, so as to impede unauthorized individuals from breaking it. Certain registrar companies even alter the codes of domain names registered through them every now and then for better safety.