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