ns5.goskope.com has no CNAME records.
Question and response
Question
dig ns5.goskope.com. NS
Answer
The response has no answer records.
Authority
goskope.com. 300 SOA ns1.goskope.opskope.com. hostmaster.nsone.net. 1772814923 3600 600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0