Apex domains cannot have CNAME records.
Question and response
Question
dig tirmilsite.com. NS
Answer
tirmilsite.com. 5 NS ns-1511.awsdns-60.org.
tirmilsite.com. 5 NS ns-989.awsdns-59.net.
tirmilsite.com. 5 NS ns-17.awsdns-02.com.
tirmilsite.com. 5 NS ns-189.awsdns-23.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0