What powers natuurcollege.nl?
Last seen Jul 2026 · 30 technologies across 18 categories
Analytics
Caching
CDN
CMS
Databases
Font scripts
JavaScript frameworks
JavaScript graphics
JavaScript libraries
Miscellaneous
Mobile frameworks
Page builders
Payment processors
Performance
Programming languages
Security
UI frameworks
WordPress plugins
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 found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.26 / 10 · ranked #1,183,806 of all domains
24 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.4 s |
| CLS | 0 |
| TTFB | 1800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Dutch (Netherlands)
- CDN: Cloudflare
- Weight: 8.0 MB · 107 requests
- WordPress theme: salient · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Natuurcollege
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Cloudflare (104.21.66.29)
- DNS: Cloudflare DNS
- Email: natuurcollege.nl
- Email security: SPF (soft fail), DMARC monitor only, DNSSEC signed
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Nov 2026
- Common Crawl link graph: rank 9,995,162, 2 hosts
- Verified with: Stripe
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 Redis Jan 2026
- detected Redis Object Cache Jan 2026
- detected Cloudflare Browser Insights Nov 2025