What powers isr.de?
Last seen Aug 2026 · 36 technologies across 20 categories
Advertising
Analytics
CDN
CMS
Cookie compliance
Databases
Font scripts
JavaScript libraries
Marketing automation
Miscellaneous
PaaS
Performance
Programming languages
Security
Translation
UI frameworks
Web servers
Webmail
WordPress plugins
WordPress themes
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 55% desktop
- 46% phone
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.70 / 10 · ranked #761,783 of all domains
34 referring domains · OpenPageRank
Core Web Vitals
| LCP | 4.7 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 3300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: German
- Weight: 6.3 MB · 233 requests
- WordPress theme: hello-elementor (child: hello-theme-child-master) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- ISR Information Products AG
- Profiles: Facebook
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Hetzner (78.47.70.164)
- DNS: Amazon Route 53
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 4096, expires Dec 2026
- Common Crawl link graph: rank 1,972,520, 6 hosts
- Verified with: Amazon SES, Atlassian, GlobalSign, Google, Microsoft 365, OpenAI
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
- detected WP-Optimize Jul 2026
- dropped Polylang Dec 2025
- detected Priority Hints Nov 2025
- detected Weglot Nov 2025