Apex domains cannot have CNAME records.
Question and response
Question
dig oke777bet.net. NS
Answer
oke777bet.net. 5 NS ns2.oke777bet.net.
oke777bet.net. 5 NS ns1.oke777bet.net.
Authority
The response has no authority records.
Additional
ns1.oke777bet.net. 5 A 51.38.92.234
ns2.oke777bet.net. 5 A 5.135.16.215
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0