What powers schumann-portal.de?
Last seen Sep 2026 · 5 technologies across 5 categories
JavaScript libraries
Operating systems
Security
Web server extensions
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 Oct 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 61% phone
- 39% desktop
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.64 / 10 · ranked #380,566 of all domains
76 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 0.4 MB · 24 requests
- Structured data: JSON-LD
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on ISPONE (84.38.79.31)
- DNS: dns-on.de
- Email: adminflex.de
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 4096, expires Dec 2026
- Common Crawl link graph: rank 715,776, 6 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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