If you want to transfer a domain name from one company to another, you’ll need to go through a couple of safety procedures. One of them is obtaining a special EPP authorization code from the present domain name registrar – as long as you are the domain registrant, since the code is sent to the owner's email account and nobody else can obtain it. You’ll have to provide this code to the new registrar, or else they will not be able to initiate the transfer process. The EPP authentication codes are case-sensitive and may contain 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 safety measure, the transfer authorization code for a domain name may be changed regularly. Certain companies call this code a domain secret, a domain password or an Auth key as well.