Apex domains cannot have CNAME records.
Question and response
Question
dig tkmsa.org. NS
Answer
tkmsa.org. 5 NS ns-391.awsdns-48.com.
tkmsa.org. 5 NS ns-322.awsdns-40.com.
tkmsa.org. 5 NS ns-1565.awsdns-03.co.uk.
tkmsa.org. 5 NS ns-1417.awsdns-49.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0