link.esbjerg-gods.dk has no NS records.
NS records for this zone are defined at esbjerg-gods.dk.
NS records for this zone are defined at esbjerg-gods.dk.
Question and response
Question
dig track.smtp2go.net. NS
Answer
The response has no answer records.
Authority
smtp2go.net. 1800 SOA ada.ns.cloudflare.com. dns.cloudflare.com. 2399049412 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0