Apex domains cannot have CNAME records.
Question and response
Question
dig website-radio.com. NS
Answer
website-radio.com. 5 NS ns2.website-radio.com.
website-radio.com. 5 NS ns1.website-radio.com.
Authority
The response has no authority records.
Additional
ns1.website-radio.com. 5 A 163.172.196.232
ns2.website-radio.com. 5 A 163.172.196.232
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0