ns1.REDCOM.RU has no CNAME records.
Question and response
Question
dig ns1.REDCOM.RU. NS
Answer
The response has no answer records.
Authority
REDCOM.RU. 4517 SOA ns.REDCOM.RU. hostmaster.REDCOM.RU. 2026021801 28800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0