Apex domains cannot have CNAME records.
Question and response
Question
dig forthfire.com. NS
Answer
forthfire.com. 1 NS camilo.ns.cloudflare.com.
forthfire.com. 1 NS maria.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0