cdn2.csti.ch has no CNAME records.
Question and response
Question
dig cdn2.csti.ch. NS
Answer
The response has no answer records.
Authority
csti.ch. 7200 SOA ns1.geneva.hosting. dns.csti-ch.net. 2026022702 14400 3600 1209600 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0