Apex domains cannot have CNAME records.
Question and response
Question
dig phishme.com.au. NS
Answer
phishme.com.au. 5 NS ns-1635.awsdns-12.co.uk.
phishme.com.au. 5 NS ns-1453.awsdns-53.org.
phishme.com.au. 5 NS ns-189.awsdns-23.com.
phishme.com.au. 5 NS ns-548.awsdns-04.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0