The Auth Code (Authorization Code) is required for a provider change, for example for the domain extensions .de, .com, .org, .info, .biz, .us or .name, and consists of a combination of numbers and letters. You can obtain this auth code from your current provider.

If you want to switch to Checkdomain with a domain that contains one of the above-mentioned domain extensions, please use our Domaincheck to start a Provider Change. You will find instructions on how to do this under the following link:

Instructions for changing your provider with a domain to checkdomain

If you wish to switch from Checkdomain to a domain that contains one of the above extensions, you will automatically receive the Auth-Code at the e-mail address provided after your written approval for the Provider Change.