Apex domains cannot have CNAME records.
Question and response
Question
dig oldnewbb.com. NS
Answer
oldnewbb.com. 5 NS ns-1324.awsdns-37.org.
oldnewbb.com. 5 NS ns-1149.awsdns-15.org.
oldnewbb.com. 5 NS ns-382.awsdns-47.com.
oldnewbb.com. 5 NS ns-1366.awsdns-42.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0