Apex domains cannot have CNAME records.
Question and response
Question
dig netone.ru. NS
Answer
netone.ru. 5 NS ns1.netone.ru.
netone.ru. 5 NS ns2.netone.ru.
Authority
The response has no authority records.
Additional
ns1.netone.ru. 5 A 188.65.128.26
ns2.netone.ru. 5 A 188.65.130.130
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0