What powers 
u-centraal.nl?
Last seen Sep 2026 · 20 technologies across 14 categories
Analytics
Cookie compliance
Development
Issue trackers
JavaScript frameworks
Miscellaneous
Performance
Programming languages
Search engines
Security
UI frameworks
Web servers
Webmail
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 found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 65% phone
- 35% desktop
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.19 / 10 · ranked #460,945 of all domains
56 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Dutch
- Weight: 2.7 MB · 56 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- U Centraal
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on NL-BIT BIT BV (178.22.56.113, IPv6)
- DNS: TransIP
- Email: mx.microsoft
- Email security: SPF (hard fail), DMARC reject
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 12,603,101, 5 hosts
- Verified with: Apple Business, Brevo, Google, Microsoft 365
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 Algolia Feb 2026
- dropped AngularJS Feb 2026
- dropped Azure Feb 2026
- dropped Bootstrap Feb 2026
- dropped Google Analytics Feb 2026
- dropped jQuery Feb 2026
- dropped Microsoft ASP.NET Feb 2026
- dropped Popper Feb 2026
- dropped PWA Feb 2026
- detected Cookie Information Jan 2026
- detected Next.js Jan 2026
- detected Next.js App Router Jan 2026
- detected Nginx Jan 2026
- detected Node.js Jan 2026
- detected Open Graph Jan 2026
- detected Piwik PRO Core Jan 2026
- detected Priority Hints Jan 2026
- detected Radix UI Jan 2026
- detected React Jan 2026
- detected reCAPTCHA Jan 2026
- detected Sentry Jan 2026
- detected Tailwind CSS Jan 2026
- detected Turbopack Jan 2026
- detected Webpack Jan 2026
- detected Mailjet Dec 2025