Apex domains cannot have CNAME records.
Question and response
Question
dig super-warriors42.com. NS
Answer
super-warriors42.com. 5 NS ns-1245.awsdns-27.org.
super-warriors42.com. 5 NS ns-1912.awsdns-47.co.uk.
super-warriors42.com. 5 NS ns-1759.awsdns-27.co.uk.
super-warriors42.com. 5 NS ns-1919.awsdns-47.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0