What powers opten.ch?
Last seen Dec 2025 · 20 technologies across 10 categories
CDN
Font scripts
Google Font API
since Mar 2023
Hosting panels
Plesk
since Mar 2023
JavaScript frameworks
JavaScript libraries
Maps
Google Maps
since Mar 2023
Miscellaneous
Open Graph
since Mar 2023
Prism
since Mar 2023
Security
Video players
Vimeo
since Mar 2023
Webmail
Microsoft 365
since Mar 2023
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
AI Crawlers
No AI crawlers blocked
Audience
Switzerland
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.02 / 10 · ranked #553,672 of all domains
30 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German (Switzerland)
- Weight: 6.2 MB · 79 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on SUNRISE (193.36.36.110)
- DNS: opten.ch
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Sectigo, RSA 4096, wildcard, expires Jan 2027
- Common Crawl link graph: rank 25,282,986, 3 hosts
- Verified with: Meta Business
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted