If you wish to transfer a domain from one domain registrar to another, you will need to pass through a few safety procedures. One of them is getting a special EPP authentication code from the present domain 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 will need to give this code to the new registrar company, or else they will not be able to begin the domain transfer procedure. The EPP authentication codes are case-sensitive and may contain numbers or special symbols such as commas or dots, which can be easily miswritten, so make sure you copy & paste the right code. As an additional safety measure, the transfer authorization code for a domain may be altered regularly. Certain registrars refer to this code as a domain secret, a domain password or an Auth key as well.