Apex domains cannot have CNAME records.
Question and response
Question
dig pomelatto.com. NS
Answer
pomelatto.com. 4 NS ns-661.awsdns-18.net.
pomelatto.com. 4 NS ns-282.awsdns-35.com.
pomelatto.com. 4 NS ns-1970.awsdns-54.co.uk.
pomelatto.com. 4 NS ns-1614.awsdns-09.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0