Apex domains cannot have CNAME records.
Question and response
Question
dig myecf.org. NS
Answer
myecf.org. 5 NS ns-1024.awsdns-00.org.
myecf.org. 5 NS ns-574.awsdns-07.net.
myecf.org. 5 NS ns-235.awsdns-29.com.
myecf.org. 5 NS ns-1080.awsdns-07.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0