Transferring a domain name from one registrar company to another ordinarily entails the use of a unique transfer authorization code, which different companies refer to as an EPP authorization code, a domain name password or an Auth-Info code. This code can be used as a security measure against unapproved transfers with all gTLD and with most ccTLD extensions. It can be obtained only by the domain registrant and is provided by the current domain registrar company. It must be given to the new registrar company because the transfer process cannot be initiated without it. The code is case-sensitive and traditionally comprises of numbers and special characters, so as to hinder unauthenticated persons from guessing it. Certain registrar companies even reset the codes of domain names registered through them after a particular period of time for greater security.