frontend01.mailsafe.dk has no NS records.
NS records for this zone are defined at mailsafe.dk.
NS records for this zone are defined at mailsafe.dk.
Question and response
Question
dig frontend01.mailsafe.dk. NS
Answer
The response has no answer records.
Authority
mailsafe.dk. 300 SOA ns001.dnspilot.com. hostmaster.dnspilot.com. 2016050310 14400 7200 604800 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0