Apex domains cannot have CNAME records.
Question and response
Question
dig fromage-chevre-blanche-07.com. NS
Answer
fromage-chevre-blanche-07.com. 4 NS ns-1800.awsdns-33.co.uk.
fromage-chevre-blanche-07.com. 4 NS ns-1983.awsdns-55.co.uk.
fromage-chevre-blanche-07.com. 4 NS ns-535.awsdns-02.net.
fromage-chevre-blanche-07.com. 4 NS ns-1460.awsdns-54.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0