Apex domains cannot have CNAME records.
Question and response
Question
dig vhost.verat.net. NS
Answer
vhost.verat.net. 1 NS ns.beotel.rs.
vhost.verat.net. 1 NS dns1.verat.net.
vhost.verat.net. 1 NS ns.beotel.net.
vhost.verat.net. 1 NS dns2.verat.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0