Apex domains cannot have CNAME records.
Question and response
Question
dig alexjones.radio. NS
Answer
alexjones.radio. 5 NS ns-1422.awsdns-49.org.
alexjones.radio. 5 NS ns-136.awsdns-17.com.
alexjones.radio. 5 NS ns-950.awsdns-54.net.
alexjones.radio. 5 NS ns-1923.awsdns-48.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0