Apex domains cannot have CNAME records.
Question and response
Question
dig lesperceursdefors.com. NS
Answer
lesperceursdefors.com. 5 NS ns-1379.awsdns-44.org.
lesperceursdefors.com. 5 NS ns-3.awsdns-00.com.
lesperceursdefors.com. 5 NS ns-302.awsdns-37.com.
lesperceursdefors.com. 5 NS ns-1554.awsdns-02.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0