If you wish to transfer a domain name from one registrar to another, you will have to go through a couple of security steps. One of them is getting a special EPP authorization code from the present registrar company – provided that you are the domain registrant, since the code is sent to the owner's email and no one else can see it. You have to give this code to the new registrar company, or else they will not be able to start the domain name transfer. The EPP authorization codes are case-sensitive and may include digits or special symbols such as dots or commas, which can be easily misentered, so make sure you copy & paste the correct code. As an additional security measure, the transfer authorization code for a domain may be changed regularly. Some registrars call this code an Auth key, a domain password or a domain secret as well.