Question and response
Question
dig sip.dk.telia.net. NS
Answer
sip.dk.telia.net. 5 CNAME voip06.dk.telia.net.
Authority
dk.telia.net. 1116 SOA dns101.telia.com. dns.telia.dk. 2603221840 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0