mx-lb-1.stofanet.dk has no NS records.
NS records for this zone are defined at stofanet.dk.
NS records for this zone are defined at stofanet.dk.
Question and response
Question
dig mx-lb-1.stofanet.dk. NS
Answer
The response has no answer records.
Authority
stofanet.dk. 1800 SOA dom.ns.cloudflare.com. dns.cloudflare.com. 2400133983 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0