Apex domains cannot have CNAME records.
Question and response
Question
dig analuacoto.com. NS
Answer
analuacoto.com. 5 NS ns-916.awsdns-50.net.
analuacoto.com. 5 NS ns-1790.awsdns-31.co.uk.
analuacoto.com. 5 NS ns-36.awsdns-04.com.
analuacoto.com. 5 NS ns-646.awsdns-16.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0