If you’d like to transfer a domain name from one registrar company to another, you’ll need to go through several security procedures. One of them is obtaining a special EPP authorization code from the current domain registrar – provided that you are the domain registrant, since the code is sent to the domain owner’s mailbox and nobody else can obtain it. You have to provide this code to the new domain name registrar, or else they will not be able to initiate the domain name transfer. The EPP authentication codes are case-sensitive and may comprise of digits or special characters such as commas or dots, which can be easily misentered, so make sure you copy & paste the correct code. As an additional protection measure, the transfer authorization code for a domain may be reset on a regular basis. Certain registrars refer to this code as a domain secret, a domain password or an Auth key as well.