Apex domains cannot have CNAME records.
Question and response
Question
dig kv9.net. NS
Answer
kv9.net. 5 NS ns1.kv9.net.
kv9.net. 5 NS ns2.kv9.net.
kv9.net. 5 NS ns3.kv9.net.
Authority
The response has no authority records.
Additional
ns1.kv9.net. 5 A 217.78.192.1
ns2.kv9.net. 5 A 62.78.96.1
ns3.kv9.net. 5 A 193.143.91.1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0