Apex domains cannot have CNAME records.
Question and response
Question
dig laboutiqueduviolon.com. NS
Answer
laboutiqueduviolon.com. 5 NS ns1.laboutiqueduviolon.com.
laboutiqueduviolon.com. 5 NS ns2.laboutiqueduviolon.com.
Authority
The response has no authority records.
Additional
ns1.laboutiqueduviolon.com. 5 A 190.2.145.67
ns2.laboutiqueduviolon.com. 5 A 190.2.145.76
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0