Apex domains cannot have CNAME records.
Question and response
Question
dig royal378strike.com. NS
Answer
royal378strike.com. 3 NS ns-1987.awsdns-56.co.uk.
royal378strike.com. 3 NS ns-660.awsdns-18.net.
royal378strike.com. 3 NS ns-217.awsdns-27.com.
royal378strike.com. 3 NS ns-1928.awsdns-49.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0