mail.schwitzing.de has no NS records.
NS records for this zone are defined at schwitzing.de.
NS records for this zone are defined at schwitzing.de.
Question and response
Question
dig mail.schwitzing.de. NS
Answer
The response has no answer records.
Authority
schwitzing.de. 10 SOA ns2.knipp.de. hostmaster.schwitzing.de. 2026012702 3600 1800 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0