Apex domains cannot have CNAME records.
Question and response
Question
dig liquidation-entreprise-gratuit.com. NS
Answer
liquidation-entreprise-gratuit.com. 5 NS ns-1963.awsdns-53.co.uk.
liquidation-entreprise-gratuit.com. 5 NS ns-1949.awsdns-51.co.uk.
liquidation-entreprise-gratuit.com. 5 NS ns-1573.awsdns-04.co.uk.
liquidation-entreprise-gratuit.com. 5 NS ns-1898.awsdns-45.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0