v123229.vm.gwdguser.de has no NS records.
NS records for this zone are defined at vm.gwdguser.de.
NS records for this zone are defined at vm.gwdguser.de.
Question and response
Question
dig v123229.vm.gwdguser.de. NS
Answer
The response has no answer records.
Authority
vm.gwdguser.de. 60 SOA dns1.gwdg.de. hostmaster.gwdg.de. 737992953 21600 3600 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0