What powers semler-fenster.de?
Last seen Aug 2026 · 19 technologies across 13 categories
Analytics
Google Analytics
since Jul 2024
CDN
Bunny
since Dec 2025
Cloudflare
since Feb 2025
Font scripts
Bunny Fonts
since Dec 2025
Hosting
Strato
since Aug 2022
JavaScript libraries
jQuery UI
since Mar 2020
Maps
Google Maps
since Dec 2022
Marketing automation
HighLevel
since Jul 2024
Operating systems
UNIX
since Mar 2020
Programming languages
Security
Cloudflare Bot Management
since Feb 2025
Tag managers
Google Tag Manager
since Mar 2024
Web frameworks
Ionic
since Jul 2024
Web servers
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.91 / 10 · ranked #3,830,319 of all domains
10 referring domains · OpenPageRank
Core Web Vitals
| LCP | 4.1 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 3000 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German
- Weight: 4.0 MB · 166 requests
- Structured data: Microdata
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on STRATO (81.169.145.175, IPv6)
- DNS: STRATO
- Email: STRATO
- Email security: no SPF record, DMARC reject
- SSL: Sectigo, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 13,228,300, 4 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 reCAPTCHA Jun 2026
- detected libphonenumber Mar 2026
- detected reCAPTCHA Jan 2026
- detected Bunny Dec 2025
- detected Bunny Fonts Dec 2025
- detected Cloudflare Nov 2025
- detected Cloudflare Bot Management Nov 2025