vm24233.virt.gwdg.de has no NS records.
NS records for this zone are defined at virt.gwdg.de.
NS records for this zone are defined at virt.gwdg.de.
Question and response
Question
dig vm24233.virt.gwdg.de. NS
Answer
The response has no answer records.
Authority
virt.gwdg.de. 60 SOA dns1.gwdg.de. hostmaster.gwdg.de. 679233980 21600 3600 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0