Apex domains cannot have CNAME records.
Question and response
Question
dig sunuravilo.com. NS
Answer
sunuravilo.com. 1 NS ns2.sunuravilo.com.
sunuravilo.com. 1 NS ns1.sunuravilo.com.
Authority
The response has no authority records.
Additional
ns1.sunuravilo.com. 1 A 142.44.210.151
ns2.sunuravilo.com. 1 A 51.161.71.117
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0