Apex domains cannot have CNAME records.
Question and response
Question
dig mindyourownbusinessradio.com. NS
Answer
mindyourownbusinessradio.com. 5 NS ns-348.awsdns-43.com.
mindyourownbusinessradio.com. 5 NS ns-431.awsdns-53.com.
mindyourownbusinessradio.com. 5 NS ns-1589.awsdns-06.co.uk.
mindyourownbusinessradio.com. 5 NS ns-333.awsdns-41.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0