Apex domains cannot have CNAME records.
Question and response
Question
dig advaitasoftware.com. NS
Answer
advaitasoftware.com. 1 NS ns-88.awsdns-11.com.
advaitasoftware.com. 1 NS ns-1606.awsdns-08.co.uk.
advaitasoftware.com. 1 NS ns-1253.awsdns-28.org.
advaitasoftware.com. 1 NS ns-280.awsdns-35.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0