What powers carl-kellner-schule.de?
Last seen Jun 2026 · 14 technologies across 11 categories
Advertising
Microsoft Advertising
since Feb 2025
Appointment scheduling
Calendly
since Feb 2025
CMS
TYPO3 CMS
since Jan 2019
Cookie compliance
Usercentrics
since Feb 2025
Hosting
IONOS
since Aug 2022
JavaScript libraries
Lightbox
since Aug 2019
Tiny Slider
since Jul 2023
Programming languages
PHP
since Jan 2019
Security
HSTS
since Jun 2026
UI frameworks
Video players
Twitch Player
since Feb 2025
Web servers
Apache HTTP Server
since Jan 2019
Audience
- 100% phone
Germany
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.58 / 10 · ranked #5,823,241 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.6 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: German (Germany)
- Weight: 2.7 MB · 68 requests
- Structured data: Microdata
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- detected HSTS Jun 2026