ns3.hosttech.ch has no CNAME records.
Question and response
Question
dig ns3.hosttech.ch. NS
Answer
The response has no answer records.
Authority
hosttech.ch. 9950 SOA ns1.hosttech.ch. dns.hosttech.eu. 2026030202 7200 120 2419200 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0