Apex domains cannot have CNAME records.
Question and response
Question
dig johnsoncityrent.com. NS
Answer
johnsoncityrent.com. 5 NS ns1.johnsoncityrent.com.
johnsoncityrent.com. 5 NS ns2.johnsoncityrent.com.
Authority
The response has no authority records.
Additional
ns1.johnsoncityrent.com. 5 A 51.91.190.82
ns2.johnsoncityrent.com. 5 A 51.91.189.130
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0