Apex domains cannot have CNAME records.
Question and response
Question
dig thefitswitch.org. NS
Answer
thefitswitch.org. 5 NS ns-917.awsdns-50.net.
thefitswitch.org. 5 NS ns-2039.awsdns-62.co.uk.
thefitswitch.org. 5 NS ns-352.awsdns-44.com.
thefitswitch.org. 5 NS ns-1005.awsdns-61.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0