Apex domains cannot have CNAME records.
Question and response
Question
dig bsmbd.org. NS
Answer
bsmbd.org. 5 NS ns-411.awsdns-51.com.
bsmbd.org. 5 NS ns-524.awsdns-01.net.
bsmbd.org. 5 NS ns-540.awsdns-03.net.
bsmbd.org. 5 NS ns-1262.awsdns-29.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0