Apex domains cannot have CNAME records.
Question and response
Question
dig relaytransmile.co.in. NS
Answer
relaytransmile.co.in. 4 NS ns1.relaytransmile.co.in.
relaytransmile.co.in. 4 NS ns2.relaytransmile.co.in.
Authority
The response has no authority records.
Additional
ns1.relaytransmile.co.in. 4 A 169.38.77.126
ns2.relaytransmile.co.in. 4 A 169.38.77.126
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0