Apex domains cannot have CNAME records.
Question and response
Question
dig comedywithclass.org. NS
Answer
comedywithclass.org. 5 NS ns-1705.awsdns-21.co.uk.
comedywithclass.org. 5 NS ns-224.awsdns-28.com.
comedywithclass.org. 5 NS ns-850.awsdns-42.net.
comedywithclass.org. 5 NS ns-1744.awsdns-26.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0