www.mpg.de has no NS records.
NS records for this zone are defined at mpg.de.
NS records for this zone are defined at mpg.de.
Question and response
Question
dig www.mpg.de. NS
Answer
The response has no answer records.
Authority
mpg.de. 60 SOA dns1.gwdg.de. hostmaster.gwdg.de. 791265828 21600 3600 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0