www.stadtfilter.ch is being shared via Free DNS, a dynamic DNS domain sharing project where members can setup, and administrate their dns entries on their own remote internet connected systems in real time.

To create a free subdomain from any shared domain, you can visit the shared domain list.

For any dns related inquiries, questions, support, comments, or misuse contact dnsadmin@afraid.org for a quick response.
Free DNS is serving 90,000+ domains, 3.7 million subdomains, and processing 2,000+ dns queries per second.