Apex domains cannot have CNAME records.
Question and response
Question
dig fitfreakninja.com. NS
Answer
fitfreakninja.com. 2 NS ns-114.awsdns-14.com.
fitfreakninja.com. 2 NS ns-1882.awsdns-43.co.uk.
fitfreakninja.com. 2 NS ns-1609.awsdns-09.co.uk.
fitfreakninja.com. 2 NS ns-151.awsdns-18.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0