What powers zis.ch?
Last seen Aug 2026 · 51 technologies across 22 categories
Analytics
CDN
Cookie compliance
Databases
Editors
Font scripts
Hosting
Issue trackers
JavaScript Frameworks
JavaScript libraries
Miscellaneous
PaaS
Programming languages
RUM
Security
Tag managers
Translation
UI frameworks
Video players
Web frameworks
Web servers
Webmail
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 amazonbot removed from robots.txt
- Sep 2026 applebot removed from robots.txt
- Sep 2026 applebot-extended removed from robots.txt
- Sep 2026 gptbot removed from robots.txt
- Sep 2026 bytespider removed from robots.txt
- Sep 2026 google-extended removed from robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 88% desktop
- 12% phone
Switzerland
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #362,884 of all domains
60 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 1600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German
- CDN: Cloudflare
- Weight: 5.6 MB · 122 requests
- Structured data: JSON-LD, Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Zurich International School
- Founded: 1968
- Industry: Education (declares
EducationalOrganization) - Country: Switzerland
- Profiles: Facebook, Instagram, YouTube
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on Cloudflare (104.17.71.73)
- DNS: infomaniak.com
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC quarantine, DNSSEC signed, BIMI
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 103,147, 8 hosts
- Verified with: Adobe, Apple Business, Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.zis.ch | 30 |
| de.zis.ch | 28 |
| globalcommunity.zis.ch | 23 |
| libguides.zis.ch | 12 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Cloudflare Bot Management Jul 2026
- detected VideoJS May 2026
- detected Stimulus Mar 2026
- detected Htmx Nov 2025