coza1.dnsnode.net has no CNAME records.
Question and response
Question
dig coza1.dnsnode.net. NS
Answer
The response has no answer records.
Authority
dnsnode.net. 1816 SOA nna.netnod.se. noc.netnod.se. 1771459229 7200 1800 604800 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0