Apex domains cannot have CNAME records.
Question and response
Question
dig vexorantila.com. NS
Answer
vexorantila.com. 4 NS ns-1184.awsdns-20.org.
vexorantila.com. 4 NS ns-378.awsdns-47.com.
vexorantila.com. 4 NS ns-46.awsdns-05.com.
vexorantila.com. 4 NS ns-1402.awsdns-47.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0