Apex domains cannot have CNAME records.
Question and response
Question
dig michaelmurrie.com. NS
Answer
michaelmurrie.com. 2 NS ns-1502.awsdns-59.org.
michaelmurrie.com. 2 NS ns-1998.awsdns-57.co.uk.
michaelmurrie.com. 2 NS ns-1951.awsdns-51.co.uk.
michaelmurrie.com. 2 NS ns-1862.awsdns-40.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0