Apex domains cannot have CNAME records.
Question and response
Question
dig 10projets.org. NS
Answer
10projets.org. 2 NS ns-1925.awsdns-48.co.uk.
10projets.org. 2 NS ns-314.awsdns-39.com.
10projets.org. 2 NS ns-369.awsdns-46.com.
10projets.org. 2 NS ns-1298.awsdns-34.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0