Apex domains cannot have CNAME records.
Question and response
Question
dig minaju.net. NS
Answer
minaju.net. 5 NS ns-340.awsdns-42.com.
minaju.net. 5 NS ns-1113.awsdns-11.org.
minaju.net. 5 NS ns-1460.awsdns-54.org.
minaju.net. 5 NS ns-1900.awsdns-45.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0