Apex domains cannot have CNAME records.
Question and response
Question
dig keyyo.net. NS
Answer
keyyo.net. 5 NS ns-78-a.gandi.net.
keyyo.net. 5 NS ns-35-c.gandi.net.
keyyo.net. 5 NS ns-130-b.gandi.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0