Apex domains cannot have CNAME records.
Question and response
Question
dig bearstech.com. NS
Answer
bearstech.com. 3 NS ns3.bearstech.net.
bearstech.com. 3 NS ns1.bearstech.net.
Authority
The response has no authority records.
Additional
ns1.bearstech.net. 3 A 78.40.125.41
ns3.bearstech.net. 3 A 51.178.95.142
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0