mx.converia.de has no NS records.
NS records for this zone are defined at converia.de.
NS records for this zone are defined at converia.de.
Question and response
Question
dig mx.converia.de. NS
Answer
The response has no answer records.
Authority
converia.de. 600 SOA nsa9.schlundtech.de. info.converia.de. 2025111908 43200 7200 1209600 600
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0