Apex domains cannot have CNAME records.
Question and response
Question
dig callmurphrealty.com. NS
Answer
callmurphrealty.com. 3 NS ns2.callmurphrealty.com.
callmurphrealty.com. 3 NS ns1.callmurphrealty.com.
Authority
The response has no authority records.
Additional
ns1.callmurphrealty.com. 3 A 170.130.202.146
ns2.callmurphrealty.com. 3 A 23.231.64.34
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0