Apex domains cannot have CNAME records.
Question and response
Question
dig formalpromdresses.org. NS
Answer
formalpromdresses.org. 3 NS ns-199.awsdns-24.com.
formalpromdresses.org. 3 NS ns-1953.awsdns-52.co.uk.
formalpromdresses.org. 3 NS ns-1054.awsdns-03.org.
formalpromdresses.org. 3 NS ns-210.awsdns-26.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0