Apex domains cannot have CNAME records.
Question and response
Question
dig 2KOM.RU. NS
Answer
2KOM.RU. 5 NS ns1.almatel.RU.
2KOM.RU. 5 NS ns2.almatel.RU.
Authority
The response has no authority records.
Additional
ns1.almatel.RU. 5 A 80.253.16.96
ns2.almatel.RU. 5 A 80.253.16.97
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0