Apex domains cannot have CNAME records.
Question and response
Question
dig xynorvexa.com. NS
Answer
xynorvexa.com. 5 NS ns-1045.awsdns-02.org.
xynorvexa.com. 5 NS ns-9.awsdns-01.com.
xynorvexa.com. 5 NS ns-1988.awsdns-56.co.uk.
xynorvexa.com. 5 NS ns-1455.awsdns-53.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0