ns2.hosterby.com has no CNAME records.
Question and response
Question
dig ns2.hosterby.com. NS
Answer
The response has no answer records.
Authority
hosterby.com. 535 SOA ns1.hosterby.com. support.hoster.by. 2026022501 900 600 86400 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0