What powers valckenburgschule.de?
Last seen Oct 2026 · 33 technologies across 15 categories
CMS
Databases
Documentation
Hosting
JavaScript frameworks
JavaScript libraries
Miscellaneous
Operating systems
Page builders
Performance
Programming languages
Security
SEO
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 100% phone
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.99 / 10 · ranked #1,601,920 of all domains
19 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: German
- Weight: 3.0 MB · 59 requests
- WordPress theme: vu · all themes
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Valckenburgschule Ulm (Valckenburg School, Ulm on Wikidata)
- Founded: 1968
- Country: Germany
- Profiles: Instagram
From the homepage's own structured data (Oct 2026) and Wikidata (CC0).
Infrastructure
- Hosted on STRATO (81.169.145.95, IPv6)
- DNS: STRATO
- Email: valckenburgschule.de
- Email security: SPF (soft fail), DMARC reject
- SSL: Sectigo, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 10,625,749, 6 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.valckenburgschule.de | 15 |
| cloud.valckenburgschule.de | 14 |
| wiki.valckenburgschule.de | 13 |
| intra.valckenburgschule.de | 5 |