What powers quadcenter.net?
Last seen Aug 2026 · 14 technologies across 9 categories
Analytics
Cloudflare Browser Insights
since Nov 2025
CDN
Cloudflare
since May 2022
Google Hosted Libraries
since May 2022
JavaScript frameworks
React
since Aug 2023
JavaScript libraries
Miscellaneous
HTTP/3
since Sep 2022
Performance
Cloudflare Rocket Loader
since Oct 2022
Security
reCAPTCHA
since Aug 2026
Webmail
Microsoft 365
since Aug 2022
Widgets
Elfsight
since Aug 2022
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Aug 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
0.40 / 10 · ranked #35,696,231 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German
- CDN: Cloudflare
- Weight: 3.2 MB · 79 requests
Homepage as crawled by the HTTP Archive, Aug 2026.
Full technology history →
Report an incorrect detection
Recent changes
- dropped Cloudflare Bot Management Aug 2026
- detected reCAPTCHA Aug 2026
- detected Cloudflare Bot Management Jun 2026
- dropped Cloudflare Bot Management Jan 2026
- dropped core-js Jan 2026
- detected Cloudflare Bot Management Nov 2025
- detected Cloudflare Browser Insights Nov 2025
- dropped Cloudflare Bot Management Oct 2025