If you want to transfer a domain name from one company to another, you will have to pass through a couple of security procedures. One of them is obtaining a special EPP authorization code from the present registrar company – as long as you are the registrant, since the code is sent to the owner's email address and nobody else can obtain it. You’ll need to give this code to the new domain registrar, otherwise they will not be able to begin the transfer. The EPP authorization codes are case-sensitive and may include digits or special characters such as dots or commas, which can be easily misentered, so make sure you copy and paste the correct code. As an extra protection measure, the transfer code for a domain may be altered regularly. Certain companies refer to this code as a domain password, a domain secret or an Auth key as well.