Apex domains cannot have CNAME records.
Question and response
Question
dig mission-de-lesprit-saint.org. NS
Answer
mission-de-lesprit-saint.org. 5 NS ns-425.awsdns-53.com.
mission-de-lesprit-saint.org. 5 NS ns-1664.awsdns-16.co.uk.
mission-de-lesprit-saint.org. 5 NS ns-641.awsdns-16.net.
mission-de-lesprit-saint.org. 5 NS ns-450.awsdns-56.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0