dnsdist02.cobytes.io has no CNAME records.
Question and response
Question
dig dnsdist02.cobytes.io. NS
Answer
The response has no answer records.
Authority
cobytes.io. 1581 SOA ns1.cobytes.io. hostmaster.cobytes.io. 2026030300 14400 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0