Apex domains cannot have CNAME records.
Question and response
Question
dig kenselectronicservice.com. NS
Answer
kenselectronicservice.com. 5 NS ns2.kenselectronicservice.com.
kenselectronicservice.com. 5 NS ns1.kenselectronicservice.com.
Authority
The response has no authority records.
Additional
ns1.kenselectronicservice.com. 5 A 146.59.232.6
ns2.kenselectronicservice.com. 5 A 51.91.165.230
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0