Apex domains cannot have CNAME records.
Question and response
Question
dig 0-js-5br.com. NS
Answer
0-js-5br.com. 4 NS ns-1596.awsdns-07.co.uk.
0-js-5br.com. 4 NS ns-745.awsdns-29.net.
0-js-5br.com. 4 NS ns-39.awsdns-04.com.
0-js-5br.com. 4 NS ns-1554.awsdns-02.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0