What powers 
sonnenhaus-institut.de?
Last seen Jul 2026 · 17 technologies across 11 categories
CMS
WordPress
since Mar 2021
Databases
MySQL
since Mar 2021
JavaScript frameworks
Svelte
since Oct 2025
JavaScript libraries
Miscellaneous
Programming languages
PHP
since Mar 2021
Security
HSTS
since Sep 2022
UI frameworks
Bootstrap
since Mar 2021
Video players
Web servers
Apache HTTP Server
since Mar 2021
WordPress plugins
WP Fastest Cache
since Aug 2025
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt found
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.47 / 10 · ranked #406,585 of all domains
86 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Infrastructure
- Hosted on EVANZOAS (178.254.17.171)
- DNS: 1blu.de
- Email: sonnenhaus-institut.de
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 9,532,904, 2 hosts
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
- detected Svelte Oct 2025