serv15.avernis.de has no NS records.
NS records for this zone are defined at avernis.de.
NS records for this zone are defined at avernis.de.
Question and response
Question
dig serv15.avernis.de. NS
Answer
The response has no answer records.
Authority
avernis.de. 1200 SOA dns.avernis.eu. whois-16.avernis.de. 2025103388 86400 10800 2592000 1200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0