Apex domains cannot have CNAME records.
Question and response
Question
dig compagnieperceval.com. NS
Answer
compagnieperceval.com. 1 NS ns-1611.awsdns-09.co.uk.
compagnieperceval.com. 1 NS ns-1707.awsdns-21.co.uk.
compagnieperceval.com. 1 NS ns-0.awsdns-00.com.
compagnieperceval.com. 1 NS ns-1507.awsdns-60.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0