Apex domains cannot have CNAME records.
Question and response
Question
dig perpetualwar.com. NS
Answer
perpetualwar.com. 5 NS ns-1881.awsdns-43.co.uk.
perpetualwar.com. 5 NS ns-1830.awsdns-36.co.uk.
perpetualwar.com. 5 NS ns-402.awsdns-50.com.
perpetualwar.com. 5 NS ns-1399.awsdns-46.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0