If you wish to transfer a domain name from one registrar company to another, you’ll need to go through several safety steps. One of them is getting a unique EPP authentication code from the present domain registrar – on the condition that you are the registrant, since the code is sent to the owner's email account and nobody else can see it. You have to provide this code to the new registrar, or else they will not be able to begin the domain transfer process. The EPP authentication codes are case-sensitive and may comprise of digits or special characters such as commas or dots, which can be easily miswritten, so make sure you copy & paste the right code. As an additional security measure, the transfer code for a domain name may be reset regularly. Some domain name registrars call this code a domain password, a domain secret or an Auth key as well.