Apex domains cannot have CNAME records.
Question and response
Question
dig toscanasempre.com. NS
Answer
toscanasempre.com. 1 NS ns-1679.awsdns-17.co.uk.
toscanasempre.com. 1 NS ns-1853.awsdns-39.co.uk.
toscanasempre.com. 1 NS ns-2032.awsdns-62.co.uk.
toscanasempre.com. 1 NS ns-1304.awsdns-35.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0