Apex domains cannot have CNAME records.
Question and response
Question
dig zoravinto.org. NS
Answer
zoravinto.org. 3 NS ns-366.awsdns-45.com.
zoravinto.org. 3 NS ns-51.awsdns-06.com.
zoravinto.org. 3 NS ns-145.awsdns-18.com.
zoravinto.org. 3 NS ns-174.awsdns-21.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0