www.arcade.ch has no CNAME records.
Question and response
Question
dig www.arcade.ch. NS
Answer
The response has no answer records.
Authority
arcade.ch. 444 SOA ns1.arcade.ch. technik.arcade.ch. 2026030525 10800 3600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0