What powers 
knzrv.nl?
Last seen Sep 2026 · 14 technologies across 11 categories
Advertising
CDN
Ecommerce
JavaScript libraries
Maps
Miscellaneous
Mobile frameworks
Security
UI frameworks
Webmail
Widgets
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 58% phone
- 42% desktop
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.99 / 10 · ranked #575,345 of all domains
35 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 6.8 MB · 76 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Koninklijke Nederlandsche Zeil- & Roeivereeniging
- Founded: 1847
- Country: Netherlands
From Wikidata (CC0).
Infrastructure
- Hosted on INTERCONNECT Interconnect Services B.V. (213.207.98.66)
- DNS: oxilion.nl
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 469,372, 2 hosts
- Verified with: 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 Cloudflare Mar 2026
- detected Cloudflare Bot Management Mar 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025