xws1.ia.surf.nl has no NS records.
NS records for this zone are defined at ia.surf.nl.
NS records for this zone are defined at ia.surf.nl.
Question and response
Question
dig xws1.ia.surf.nl. NS
Answer
The response has no answer records.
Authority
ia.surf.nl. 3600 SOA ns1.surfnet.nl. hostmaster.surfnet.nl. 2603251294 7200 600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0