Apex domains cannot have CNAME records.
Question and response
Question
dig trucords.com. NS
Answer
trucords.com. 5 NS ns-162.awsdns-20.com.
trucords.com. 5 NS ns-1215.awsdns-23.org.
trucords.com. 5 NS ns-1193.awsdns-21.org.
trucords.com. 5 NS ns-1686.awsdns-18.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0