coco.bunny.net has no CNAME records.
Question and response
Question
dig coco.bunny.net. NS
Answer
The response has no answer records.
Authority
bunny.net. 562 SOA kiki.bunny.net. hostmaster.bunny.net. 2021681520 7200 900 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0