Apex domains cannot have CNAME records.
Question and response
Question
dig xylentra.org. NS
Answer
xylentra.org. 3 NS ns-1245.awsdns-27.org.
xylentra.org. 3 NS ns-332.awsdns-41.com.
xylentra.org. 3 NS ns-165.awsdns-20.com.
xylentra.org. 3 NS ns-1001.awsdns-61.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0