ns6.supercp.com has no CNAME records.
Question and response
Question
dig ns6.supercp.com. NS
Answer
The response has no answer records.
Authority
supercp.com. 4690 SOA ns1.stableserver.net. root.sr1.supercp.com. 2026021401 86400 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0