Apex domains cannot have CNAME records.
Question and response
Question
dig enertech-solar.com. NS
Answer
enertech-solar.com. 5 NS ns2.enertech-solar.com.
enertech-solar.com. 5 NS ns1.enertech-solar.com.
Authority
The response has no authority records.
Additional
ns1.enertech-solar.com. 5 A 142.171.213.115
ns2.enertech-solar.com. 5 A 142.171.213.124
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0