smtp.anet.dk has no NS records.
NS records for this zone are defined at anet.dk.
NS records for this zone are defined at anet.dk.
Question and response
Question
dig smtp.anet.dk. NS
Answer
The response has no answer records.
Authority
anet.dk. 86400 SOA ns01.athena-hosting.dk. hostmaster.athena-hosting.dk. 2021032402 86400 7200 86400 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0