What powers urvviking.nl?
Last seen Aug 2026 · 13 technologies across 11 categories
Analytics
CDN
CMS
Comment systems
Font scripts
Maps
Performance
Programming languages
Search engines
UI frameworks
Web servers
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 Aug 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.96 / 10 · ranked #3,693,004 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Dutch (Netherlands)
- Weight: 1.4 MB · 47 requests
- Structured data: JSON-LD, Microdata
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- U.R.V. Viking (Utrechtse Roeivereniging Viking on Wikidata)
- Founded: 1906
- Country: Netherlands
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on PREVIDER-AS (141.138.168.123)
- DNS: auroradns.eu
- Email: spamexperts.com
- Email security: no SPF record, no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 4096, expires Dec 2026
- Common Crawl link graph: rank 31,333,462, 2 hosts
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Google Analytics Jul 2026
- detected Priority Hints Jul 2026
- detected Google Font API May 2026
- dropped cdnjs Nov 2025
- dropped Cloudflare Nov 2025
- dropped FullCalendar Nov 2025
- dropped Google Analytics Nov 2025
- dropped Google Font API Nov 2025
- dropped jQuery Nov 2025
- dropped jQuery Migrate Nov 2025
- dropped jQuery UI Nov 2025
- dropped K2 Nov 2025
- dropped Moment.js Nov 2025
- dropped Open Graph Nov 2025
- dropped TypeScript Nov 2025
- dropped UIKit Nov 2025
- detected Awesomplete Oct 2025
- detected Bootstrap Icons Oct 2025
- detected jsDelivr Oct 2025