ait-psmtp05.win.dtu.dk has no NS records.
NS records for this zone are defined at win.dtu.dk.
NS records for this zone are defined at win.dtu.dk.
Question and response
Question
dig ait-psmtp05.win.dtu.dk. NS
Answer
The response has no answer records.
Authority
win.dtu.dk. 900 SOA dns3.dtu.dk. dnsadmin.dtu.dk. 1307871775 3600 900 604800 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0