Apex domains cannot have CNAME records.
Question and response
Question
dig cedrieredelamontagne.com. NS
Answer
cedrieredelamontagne.com. 5 NS ns-823.awsdns-38.net.
cedrieredelamontagne.com. 5 NS ns-41.awsdns-05.com.
cedrieredelamontagne.com. 5 NS ns-747.awsdns-29.net.
cedrieredelamontagne.com. 5 NS ns-1917.awsdns-47.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0