Transferring a domain name from one registrar company to another traditionally entails the use of a special authorization code, which different registrar companies call an EPP key, a domain password or an Auth-Info code. This code can be used as a security mechanism against unsolicited transfers 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 current domain name registrar company. It must be given to the new domain name registrar company because the transfer cannot be initiated without it. The code is case-sensitive and traditionally comprises of digits and special symbols, so as to stop unauthenticated persons from hijacking it. Certain domain registrars even reset the codes of domains registered through them after a particular period of time for better security.