What powers z21.eu?
Last seen Jun 2026 · 7 technologies across 7 categories
CMS
Koala Framework
since Jan 2019
JavaScript libraries
Flickity
since Sep 2022
Miscellaneous
Open Graph
since Sep 2022
Programming languages
PHP
since Jan 2019
Security
HSTS
since Sep 2022
Web servers
Apache HTTP Server
since Jan 2019
Webmail
Microsoft 365
since May 2025
Audience
- 45% desktop
- 43% phone
- 12% tablet
Germany
United Kingdom
France
Netherlands
Austria
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
3.96 / 10 · ranked #597,971 of all domains
40 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: German
- Weight: 3.1 MB · 31 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.