Apex domains cannot have CNAME records.
Question and response
Question
dig hostcocoa.com. NS
Answer
hostcocoa.com. 4 NS ns-1150.awsdns-15.org.
hostcocoa.com. 4 NS ns-193.awsdns-24.com.
hostcocoa.com. 4 NS ns-680.awsdns-21.net.
hostcocoa.com. 4 NS ns-1946.awsdns-51.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0