Apex domains cannot have CNAME records.
Question and response
Question
dig UTELCOM.RU. NS
Answer
utelcom.ru. 5 NS ns2.utelcom.ru.
utelcom.ru. 5 NS ns1.utelcom.ru.
Authority
The response has no authority records.
Additional
ns1.utelcom.RU. 5 A 193.107.0.2
ns2.utelcom.RU. 5 A 193.107.1.2
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0