What powers 
prometheus-bildarchiv.de?
Last seen Aug 2026 · 6 technologies across 6 categories
CDN
Hosting
JavaScript frameworks
Miscellaneous
UI frameworks
Web servers
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
- 67% desktop
- 33% phone
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.75 / 10 · ranked #279,530 of all domains
163 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 5.7 MB · 41 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- prometheus – A distributed digital image archive for research and teaching
- Country: Germany
From Wikidata (CC0).
Infrastructure
- Hosted on UNI-KOELN (134.95.81.52)
- DNS: IONOS
- Email: IONOS
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P384, expires Dec 2026
- Common Crawl link graph: rank 501,010, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| prometheus-bildarchiv.de | 6 |
| www.prometheus-bildarchiv.de | 4 |
Full technology history →
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