Apex domains cannot have CNAME records.
Question and response
Question
dig shaburinko.com. NS
Answer
shaburinko.com. 5 NS ns-349.awsdns-43.com.
shaburinko.com. 5 NS ns-1324.awsdns-37.org.
shaburinko.com. 5 NS ns-120.awsdns-15.com.
shaburinko.com. 5 NS ns-1056.awsdns-04.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0