Apex domains cannot have CNAME records.
Question and response
Question
dig redballpress.com. NS
Answer
redballpress.com. 3 NS ns-1659.awsdns-15.co.uk.
redballpress.com. 3 NS ns-1861.awsdns-40.co.uk.
redballpress.com. 3 NS ns-394.awsdns-49.com.
redballpress.com. 3 NS ns-799.awsdns-35.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0