sptn.proserve.nl has no NS records.
NS records for this zone are defined at proserve.nl.
NS records for this zone are defined at proserve.nl.
Question and response
Question
dig sptn.proserve.nl. NS
Answer
The response has no answer records.
Authority
proserve.nl. 300 SOA ns1.dn-s.nl. nic.virtualregistrar.nl. 2026031763 28800 7200 322400 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0