Apex domains cannot have CNAME records.
Question and response
Question
dig easyvista.net. NS
Answer
easyvista.net. 5 NS ns-2020.awsdns-60.co.uk.
easyvista.net. 5 NS ns-4.awsdns-00.com.
easyvista.net. 5 NS ns-913.awsdns-50.net.
easyvista.net. 5 NS ns-1148.awsdns-15.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0