post.knipp.de has no NS records.
NS records for this zone are defined at knipp.de.
NS records for this zone are defined at knipp.de.
Question and response
Question
dig post.knipp.de. NS
Answer
The response has no answer records.
Authority
knipp.de. 900 SOA ns7.knipp.de. dnsmaster.knipp.de. 2026022085 10800 3600 604800 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0