Apex domains cannot have CNAME records.
Question and response
Question
dig cmunc.org. NS
Answer
cmunc.org. 4 NS ns-1293.awsdns-33.org.
cmunc.org. 4 NS ns-1308.awsdns-35.org.
cmunc.org. 4 NS ns-275.awsdns-34.com.
cmunc.org. 4 NS ns-297.awsdns-37.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0