Apex domains cannot have CNAME records.
Question and response
Question
dig hostingbytg.com. NS
Answer
hostingbytg.com. 5 NS ns1.hostingbytg.com.
hostingbytg.com. 5 NS ns2.hostingbytg.com.
Authority
The response has no authority records.
Additional
ns1.hostingbytg.com. 5 A 64.225.61.235
ns2.hostingbytg.com. 5 A 107.170.222.204
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0