nserver.tmag.de has no NS records.
NS records for this zone are defined at tmag.de.
NS records for this zone are defined at tmag.de.
Question and response
Question
dig nserver.tmag.de. NS
Answer
The response has no answer records.
Authority
tmag.de. 600 SOA ns1.namesserver.net. dnsadmin.tmag.de. 2025100901 21600 1800 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0