Apex domains cannot have CNAME records.
Question and response
Question
dig gsmenon.com. NS
Answer
gsmenon.com. 5 NS ns-1950.awsdns-51.co.uk.
gsmenon.com. 5 NS ns-254.awsdns-31.com.
gsmenon.com. 5 NS ns-102.awsdns-12.com.
gsmenon.com. 5 NS ns-1640.awsdns-13.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0