ns2.beget.RU has no CNAME records.
Question and response
Question
dig ns2.beget.RU. NS
Answer
The response has no answer records.
Authority
beget.RU. 300 SOA ns1.beget.com. hostmaster.beget.com. 1772814423 300 600 86400 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0