Apex domains cannot have CNAME records.
Question and response
Question
dig ericsontpa.com. NS
Answer
ericsontpa.com. 5 NS ns3.ericsontpa.com.
ericsontpa.com. 5 NS ns4.ericsontpa.com.
ericsontpa.com. 5 NS ns1.ericsontpa.com.
ericsontpa.com. 5 NS ns2.ericsontpa.com.
Authority
The response has no authority records.
Additional
ns3.ericsontpa.com. 5 A 103.35.121.93
ns4.ericsontpa.com. 5 A 103.35.121.94
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0