If you want to transfer a domain name from one registrar to another, you’ll have to pass through a few security steps. One of them is obtaining a unique EPP authentication code from the present domain name registrar – on the condition that you are the domain registrant, since the code is emailed to the owner's email address and nobody else can see it. You need to provide this code to the new domain name registrar, or else they will not be able to initiate the domain transfer process. The EPP authentication codes are case-sensitive and may include digits or special characters such as dots or commas, which can be easily misentered, so make sure you copy and paste the right code. As an extra security measure, the transfer authorization code for a domain may be reset on a regular basis. Some domain name registrars refer to this code as a domain secret, an Auth key or a domain password as well.