Apex domains cannot have CNAME records.
Question and response
Question
dig buildingelectricity.com. NS
Answer
buildingelectricity.com. 5 NS ns2.buildingelectricity.com.
buildingelectricity.com. 5 NS ns1.buildingelectricity.com.
Authority
The response has no authority records.
Additional
ns1.buildingelectricity.com. 5 A 170.130.206.142
ns2.buildingelectricity.com. 5 A 89.39.149.230
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0