Apex domains cannot have CNAME records.
Question and response
Question
dig fortdavisinntx.com. NS
Answer
fortdavisinntx.com. 5 NS ns2.fortdavisinntx.com.
fortdavisinntx.com. 5 NS ns1.fortdavisinntx.com.
Authority
The response has no authority records.
Additional
ns1.fortdavisinntx.com. 5 A 142.44.136.25
ns2.fortdavisinntx.com. 5 A 51.222.0.4
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0