If you are receiving error messages when trying to set Name Servers for your .DE domain, the issue is likely one described here:
Why am I unable to set my name servers for my .DE domain?
The central registry for .DE domains requires that all name servers respond to DNS queries before they can be set to a .DE domain. This means that not only will your name servers need to be valid, they will also need to be properly configured to serve your specific domain and have diverse IP addresses associated to them.
If you receive an error when attempting to set name servers for your .DE domain, it usually means one or more of these requirements are not met. In this case, we recommend running a Pre-Delegation Check. This should help you pin-point misconfigurations so you can inform your DNS provider or web host for resolution.
Select "My Domains" from the left-side menu bar and click "Manage Domains" in the drop-down.
Check the box next to your domain name(s) and click on the "Action" button.
Choose "DNS Settings" from the "Action" list.
On the DNS page, select the "Name Servers" setting from the top drop-down menu.
There are two ways to set name servers: - If you are adding new name servers, select "Enter new or existing Name Servers" from your list of choices and enter your new name servers in the provided fields. - If you are using existing name servers, move down to the "Select from your Name Servers" option and choose the name servers from your existing list.
Press the "Save Name Server" button to save your changes.
Please be aware that it might take some time for your name server changes to propagate.
Alternatively, you can also set your Name Servers when transferring your domain. To do so, while your item is in the cart, please click on the hardware icon. It will prompt you through a short two step wizard and guide you through the set up process.