mx2.uni-greifswald.de has no NS records.
NS records for this zone are defined at uni-greifswald.de.
NS records for this zone are defined at uni-greifswald.de.
Question and response
Question
dig mx2.uni-greifswald.de. NS
Answer
The response has no answer records.
Authority
uni-greifswald.de. 172800 SOA dns1.uni-greifswald.de. hostmaster.uni-greifswald.de. 2026030606 86400 7200 1814400 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0