web1.introweb.nl has no NS records.
NS records for this zone are defined at introweb.nl.
NS records for this zone are defined at introweb.nl.
Question and response
Question
dig web1.introweb.nl. NS
Answer
The response has no answer records.
Authority
introweb.nl. 3484 SOA nsauth1.introweb.nl. postmaster.introweb.nl. 2020070802 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0