smtp.lisbv.nl has no NS records.
NS records for this zone are defined at lisbv.nl.
NS records for this zone are defined at lisbv.nl.
Question and response
Question
dig smtp.lisbv.nl. NS
Answer
The response has no answer records.
Authority
lisbv.nl. 43200 SOA rz-ns-01.winsped.de. admin.winsped.de. 2020033016 21600 21600 864000 43200
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0