Apex domains cannot have CNAME records.
Question and response
Question
dig macarthurcycling.com. NS
Answer
macarthurcycling.com. 5 NS ns2.macarthurcycling.com.
macarthurcycling.com. 5 NS ns1.macarthurcycling.com.
Authority
The response has no authority records.
Additional
ns1.macarthurcycling.com. 5 A 149.56.25.51
ns2.macarthurcycling.com. 5 A 51.161.109.31
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0