Apex domains cannot have CNAME records.
Question and response
Question
dig unholyrpg.com. NS
Answer
unholyrpg.com. 4 NS ns-1482.awsdns-57.org.
unholyrpg.com. 4 NS ns-864.awsdns-44.net.
unholyrpg.com. 4 NS ns-533.awsdns-02.net.
unholyrpg.com. 4 NS ns-1686.awsdns-18.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0