Apex domains cannot have CNAME records.
Question and response
Question
dig dns2.wpeasy.au. NS
Answer
dns2.wpeasy.au. 5 NS ns1.wpeasy.net.
dns2.wpeasy.au. 5 NS ns2.wpeasy.net.
Authority
The response has no authority records.
Additional
ns1.wpeasy.net. 5 A 45.76.125.4
ns2.wpeasy.net. 5 A 45.76.125.4
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0