Apex domains cannot have CNAME records.
Question and response
Question
dig maineperformingarts.org. NS
Answer
maineperformingarts.org. 5 NS ns-1405.awsdns-47.org.
maineperformingarts.org. 5 NS ns-414.awsdns-51.com.
maineperformingarts.org. 5 NS ns-1090.awsdns-08.org.
maineperformingarts.org. 5 NS ns-1663.awsdns-15.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0