During domain transfer, there will be times that you will be asked to enter the authorization code or EPP code depending on your registrar. For 1and1.com domains, here is where you can find the Authorization code:
To get your 1and1 Authorization code:
1. Login to your 1and1 account.
If you have only one package, you will be directed to the Administration page. For more than one package, just select the package you would like to view.
2. Click “Domains” link under Domains & Webspace.
3. Check the box next to the domain and click the Info button.
4. Take note or copy the Auth code.