If you want to transfer a domain name from one company to another, you will have to pass through several security steps. One of them is getting a unique EPP authorization code from the present domain registrar – on the condition that you are the domain registrant, since the code is sent to the domain owner’s email address and nobody else can see it. You’ll have to give this code to the new registrar company, or else they won’t be able to begin the domain name transfer process. The EPP authorization codes are case-sensitive and may comprise of digits or special characters such as dots or commas, which can be easily misentered, so make sure you copy/paste the correct code. As an additional safety measure, the transfer code for a domain may be changed on a regular basis. Certain registrar companies call this code a domain secret, an Auth key or a domain password as well.