Apex domains cannot have CNAME records.
Question and response
Question
dig VDSID.RU. NS
Answer
vdsid.ru. 5 NS ns2.isphoster.net.
vdsid.ru. 5 NS ns1.isphoster.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0