Apex domains cannot have CNAME records.
Question and response
Question
dig excelcloud.my. NS
Answer
excelcloud.my. 5 NS ns01.excelcloud.my.
excelcloud.my. 5 NS ns02.excelcloud.my.
excelcloud.my. 5 NS ns04.excelcloud.my.
Authority
The response has no authority records.
Additional
ns01.excelcloud.my. 5 A 202.87.109.12
ns02.excelcloud.my. 5 A 202.9.103.73
ns04.excelcloud.my. 5 A 118.107.236.142
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0