Apex domains cannot have CNAME records.
Question and response
Question
dig robbyadams.com. NS
Answer
robbyadams.com. 5 NS ns-1678.awsdns-17.co.uk.
robbyadams.com. 5 NS ns-1297.awsdns-34.org.
robbyadams.com. 5 NS ns-1047.awsdns-02.org.
robbyadams.com. 5 NS ns-1721.awsdns-23.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0