If you wish to transfer a domain from one domain registrar to another, you’ll need to pass through a few safety steps. One of them is obtaining a unique EPP code from the present domain name registrar – as long as you are the registrant, since the code is sent to the owner's email address and no one else can see it. You need to give this code to the new domain name registrar, or else they will not be able to start the domain transfer process. The EPP codes are case-sensitive and may comprise of 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 code for a domain may be altered regularly. Some registrar companies call this code a domain secret, an Auth key or a domain password as well.