If you wish to transfer a domain name from one company to another, you’ll need to go through several safety steps. One of them is getting a special EPP authorization code from the current domain registrar – provided that you are the registrant, since the code is emailed to the owner's email and no one else can get it. You will have to give this code to the new registrar, otherwise they will not be able to initiate the domain transfer procedure. The EPP authentication codes are case-sensitive and may include numbers or special symbols such as commas or dots, which can be easily misentered, so make sure you copy/paste the right code. As an additional safety measure, the transfer authorization code for a domain may be changed regularly. Some domain name registrars call this code a domain password, a domain secret or an Auth key as well.