Apex domains cannot have CNAME records.
Question and response
Question
dig mahavirpuramtirth.com. NS
Answer
mahavirpuramtirth.com. 5 NS ns-1537.awsdns-00.co.uk.
mahavirpuramtirth.com. 5 NS ns-1288.awsdns-33.org.
mahavirpuramtirth.com. 5 NS ns-502.awsdns-62.com.
mahavirpuramtirth.com. 5 NS ns-681.awsdns-21.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0