Apex domains cannot have CNAME records.
Question and response
Question
dig vexontria.org. NS
Answer
vexontria.org. 1 NS ns-730.awsdns-27.net.
vexontria.org. 1 NS ns-687.awsdns-21.net.
vexontria.org. 1 NS ns-729.awsdns-27.net.
vexontria.org. 1 NS ns-1246.awsdns-27.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0