Apex domains cannot have CNAME records.
Question and response
Question
dig cfahm.org. NS
Answer
cfahm.org. 5 NS ns-1952.awsdns-52.co.uk.
cfahm.org. 5 NS ns-1897.awsdns-45.co.uk.
cfahm.org. 5 NS ns-557.awsdns-05.net.
cfahm.org. 5 NS ns-1285.awsdns-32.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0