Apex domains cannot have CNAME records.
Question and response
Question
dig saura8.com. NS
Answer
saura8.com. 5 NS ns1.saura8.com.
saura8.com. 5 NS ns2.saura8.com.
Authority
The response has no authority records.
Additional
ns1.saura8.com. 5 A 216.245.219.188
ns2.saura8.com. 5 A 209.212.157.203
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0