Apex domains cannot have CNAME records.
Question and response
Question
dig benedettaemirko.com. NS
Answer
benedettaemirko.com. 5 NS ns2.benedettaemirko.com.
benedettaemirko.com. 5 NS ns1.benedettaemirko.com.
Authority
The response has no authority records.
Additional
ns1.benedettaemirko.com. 5 A 51.77.53.65
ns2.benedettaemirko.com. 5 A 51.83.136.156
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0