Apex domains cannot have CNAME records.
Question and response
Question
dig snigconsultancy.com. NS
Answer
snigconsultancy.com. 5 NS ns1.snigconsultancy.com.
snigconsultancy.com. 5 NS ns2.snigconsultancy.com.
Authority
The response has no authority records.
Additional
ns1.snigconsultancy.com. 5 A 63.143.34.212
ns2.snigconsultancy.com. 5 A 69.162.124.204
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0