What powers horstra.nl?
Last seen Aug 2026 · 15 technologies across 11 categories
Analytics
Font scripts
Issue trackers
JavaScript frameworks
JavaScript libraries
Live chat
Miscellaneous
Security
Tag managers
Video players
Web servers
AI Crawlers
Blocks 3 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- Google-Extended Blocked
- GPTBot Blocked
Search and AI assistants
- PerplexityBot Blocked
The other 30 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
3 of 33 AI crawlers blocked
Audience
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.58 / 10 · ranked #5,823,368 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Dutch
- Weight: 11.5 MB · 79 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Industry: Real estate (declares
RealEstateAgent)
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on AS_INIT3 (185.161.141.131)
- DNS: init3bv.nl
- Email: realworks.nl
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P384, expires Dec 2026
- Common Crawl link graph: rank 52,959,467
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 HSTS Jul 2026
- dropped Browser-Update.org Apr 2026
- dropped FancyBox Apr 2026
- dropped Font Awesome Apr 2026
- dropped HSTS Apr 2026
- dropped Java Apr 2026
- dropped jQuery UI Apr 2026
- dropped Modernizr Apr 2026
- detected Alpine.js Mar 2026
- detected Google Font API Mar 2026
- detected Polyfill Mar 2026
- detected Sentry Mar 2026
- detected Webpack Mar 2026
- detected WhatsApp Business Chat Mar 2026