mx1.support.nl has no NS records.
NS records for this zone are defined at support.nl.
NS records for this zone are defined at support.nl.
Question and response
Question
dig mx1.support.nl. NS
Answer
The response has no answer records.
Authority
support.nl. 86400 SOA ns3.infracom.nl. dom-reg.infracom.nl. 2024092601 21600 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0