Apex domains cannot have CNAME records.
Question and response
Question
dig trinoxavert.com. NS
Answer
trinoxavert.com. 2 NS ns-183.awsdns-22.com.
trinoxavert.com. 2 NS ns-1013.awsdns-62.net.
trinoxavert.com. 2 NS ns-43.awsdns-05.com.
trinoxavert.com. 2 NS ns-774.awsdns-32.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0