What powers kestner.app?
Last seen Sep 2026 · 9 technologies across 8 categories
CDN
Cloudflare
since Sep 2023
Mailjet
since Sep 2023
JavaScript frameworks
Miscellaneous
Open Graph
since Sep 2023
Programming languages
TypeScript
since Sep 2023
Security
HSTS
since Sep 2023
UI frameworks
Tailwind CSS
since Sep 2023
Web frameworks
Ionic
since Sep 2023
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 67% phone
- 33% desktop
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.47 / 10 · ranked #6,753,698 of all domains
5 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.9 s |
| INP | 175 ms |
| CLS | 0.05 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: German
- Weight: 18.7 MB · 85 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Amazon Web Services (3.65.94.12)
- DNS: Cloudflare DNS
- Email: no MX record returned
- Email security: SPF (neutral), DMARC monitor only
- SSL: Amazon Trust Services, RSA 2048, expires Apr 2027
- Common Crawl link graph: rank 247,906, 6 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- detected HSTS Mar 2026