Apex domains cannot have CNAME records.
Question and response
Question
dig qaventria.org. NS
Answer
qaventria.org. 4 NS ns-388.awsdns-48.com.
qaventria.org. 4 NS ns-407.awsdns-50.com.
qaventria.org. 4 NS ns-1520.awsdns-62.org.
qaventria.org. 4 NS ns-157.awsdns-19.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0