Apex domains cannot have CNAME records.
Question and response
Question
dig herbalhills.in. NS
Answer
herbalhills.in. 4 NS kloudcs.venus.orderbox-dns.com.
herbalhills.in. 4 NS kloudcs.mercury.orderbox-dns.com.
herbalhills.in. 4 NS kloudcs.mars.orderbox-dns.com.
herbalhills.in. 4 NS kloudcs.earth.orderbox-dns.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0