If you’d like to transfer a domain name from one registrar to another, you’ll need to pass through several security procedures. One of them is getting a unique EPP authorization code from the current domain name registrar – as long as you are the domain registrant, since the code is sent to the owner's email and no one else can obtain it. You will need to give this code to the new domain name registrar, otherwise they won’t be able to initiate the domain name transfer procedure. The EPP codes are case-sensitive and may include digits or special characters such as dots or commas, which can be easily miswritten, so make sure you copy and paste the correct code. As an additional security measure, the transfer authorization code for a domain name may be changed regularly. Certain companies call this code an Auth key, a domain secret or a domain password as well.