Apex domains cannot have CNAME records.
Question and response
Question
dig primevoda.com. NS
Answer
primevoda.com. 5 NS ns2.vodadns.com.
primevoda.com. 5 NS ns1.vodadns.com.
Authority
The response has no authority records.
Additional
ns1.vodadns.com. 5 A 144.217.65.19
ns2.vodadns.com. 5 A 149.56.20.117
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0