Apex domains cannot have CNAME records.
Question and response
Question
dig communicatoremail.com. NS
Answer
communicatoremail.com. 5 NS ns-578.awsdns-08.net.
communicatoremail.com. 5 NS ns-1998.awsdns-57.co.uk.
communicatoremail.com. 5 NS ns-415.awsdns-51.com.
communicatoremail.com. 5 NS ns-1050.awsdns-03.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0