Apex domains cannot have CNAME records.
Question and response
Question
dig cyberway.com.sg. NS
Answer
cyberway.com.sg. 4 NS secdns.starhub.net.sg.
cyberway.com.sg. 4 NS secdns2.starhub.net.sg.
cyberway.com.sg. 4 NS pricus.starhub.net.sg.
Authority
The response has no authority records.
Additional
pricus.starhub.net.sg. 4 A 203.116.1.93
secdns.starhub.net.sg. 4 A 203.116.1.94
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0