plesk.esmero.nl has no NS records.
NS records for this zone are defined at esmero.nl.
NS records for this zone are defined at esmero.nl.
Question and response
Question
dig plesk.esmero.nl. NS
Answer
The response has no answer records.
Authority
esmero.nl. 3600 SOA ns1.sectigoweb.com. admin.sectigo.com. 1658490582 86400 7200 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0