Apex domains cannot have CNAME records.
Question and response
Question
dig buyviagramalaysia.com. NS
Answer
buyviagramalaysia.com. 5 NS ns-1846.awsdns-38.co.uk.
buyviagramalaysia.com. 5 NS ns-1488.awsdns-58.org.
buyviagramalaysia.com. 5 NS ns-458.awsdns-57.com.
buyviagramalaysia.com. 5 NS ns-1163.awsdns-17.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0