Apex domains cannot have CNAME records.
Question and response
Question
dig keyyo.com. NS
Answer
keyyo.com. 5 NS ns-57-a.gandi.net.
keyyo.com. 5 NS ns-166-c.gandi.net.
keyyo.com. 5 NS ns-18-b.gandi.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0