Apex domains cannot have CNAME records.
Question and response
Question
dig distributechasia.com. NS
Answer
distributechasia.com. 4 NS ns-68.awsdns-08.com.
distributechasia.com. 4 NS ns-459.awsdns-57.com.
distributechasia.com. 4 NS ns-1073.awsdns-06.org.
distributechasia.com. 4 NS ns-1688.awsdns-19.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0