Apex domains cannot have CNAME records.
Question and response
Question
dig hegerys.com. NS
Answer
hegerys.com. 4 NS ns.magic.fr.
hegerys.com. 4 NS ns2.magic.fr.
Authority
The response has no authority records.
Additional
ns.magic.fr. 5 A 188.130.24.5
ns2.magic.fr. 5 A 188.130.16.126
ns.magic.fr. 5 AAAA 2001:900:10:cafe:0:0:0:100
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0