Apex domains cannot have CNAME records.
Question and response
Question
dig excellent.id. NS
Answer
excellent.id. 5 NS ns-1407.awsdns-47.org.
excellent.id. 5 NS ns-615.awsdns-12.net.
excellent.id. 5 NS ns-105.awsdns-13.com.
excellent.id. 5 NS ns-1572.awsdns-04.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0