ns02.1cloud.ru has no CNAME records.
Question and response
Question
dig ns02.1cloud.ru. NS
Answer
The response has no answer records.
Authority
1cloud.RU. 858 SOA bns.mws.RU. dns.mts.RU. 2026030501 10800 1800 604800 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0