smtp.danlon.dk has no NS records.
NS records for this zone are defined at danlon.dk.
NS records for this zone are defined at danlon.dk.
Question and response
Question
dig smtp.danlon.dk. NS
Answer
The response has no answer records.
Authority
danlon.dk. 300 SOA ns.dandomain.dk. hostmaster.dandomain.dk. 2026022501 14400 3600 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0