What powers 
bieri.ch?
Last seen Aug 2026 · 16 technologies across 11 categories
Analytics
CDN
Databases
Ecommerce
Issue trackers
JavaScript frameworks
JavaScript libraries
PaaS
Programming languages
Security
Web servers
AI Crawlers
Does not block any of the 33 AI crawlers we track in its robots.txt. Checked Sep 2026.
Training crawlers
- ClaudeBot Allowed
- Google-Extended Allowed
- GPTBot Allowed
Search and AI assistants
- Claude-SearchBot Allowed
- OAI-SearchBot Allowed
- PerplexityBot Allowed
User-request fetchers
- ChatGPT-User Allowed
- Claude-User Allowed
- Perplexity-User Allowed
The other 24 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 57% phone
- 43% desktop
Switzerland
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.71 / 10 · ranked #759,710 of all domains
32 referring domains · OpenPageRank
Search traffic
4 est. monthly organic visits (US)
6 keywords in Google's top 30
Core Web Vitals
| LCP | 1.8 s |
| INP | 75 ms |
| CLS | 0.1 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German
- Weight: 46.8 MB · 71 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on CORE-BACKBONE CORE-BACKBONE GMBH GLOBAL NETWORK (82.199.141.99, IPv6)
- DNS: arcon.ch
- Email: arcon.ch
- Email security: SPF (soft fail), DMARC quarantine
- SSL: Let's Encrypt, ECDSA P384, expires Nov 2026
- Common Crawl link graph: rank 14,407,554, 2 hosts
- Verified with: Google
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Animate.css Aug 2026
- dropped Bootstrap Aug 2026
- dropped Google Maps Aug 2026
- dropped lit-element Aug 2026
- dropped lit-html Aug 2026
- dropped Moment.js Aug 2026
- dropped OWL Carousel Aug 2026
- dropped Underscore.js Aug 2026
- detected Lodash Jul 2026
- detected HSTS Mar 2026
- detected Animate.css Jan 2026
- dropped Lodash Jan 2026
- detected Bootstrap Dec 2025
- detected Moment.js Dec 2025
- detected OWL Carousel Dec 2025
- detected Underscore.js Dec 2025
- dropped Animate.css Oct 2025
- dropped Bootstrap Oct 2025
- dropped OWL Carousel Oct 2025