mx.previder.nl has no NS records.
NS records for this zone are defined at previder.nl.
NS records for this zone are defined at previder.nl.
Question and response
Question
dig mx.previder.nl. NS
Answer
The response has no answer records.
Authority
previder.nl. 3598 SOA nsauth1.introweb.nl. postmaster.introweb.nl. 2023020902 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0