What powers obk-zeist.nl?
Last seen Oct 2026 · 16 technologies across 11 categories
Analytics
Caching
Varnish
since May 2025
CDN
jQuery CDN
since May 2025
jsDelivr
since May 2025
CMS
JavaScript frameworks
React
since May 2025
JavaScript libraries
Miscellaneous
Open Graph
since Dec 2022
RSS
since Dec 2022
Photo galleries
PhotoSwipe
since May 2025
Programming languages
Node.js
since May 2025
Web servers
Webmail
Microsoft 365
since Oct 2024
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 checked
- 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
1.25 / 10 · ranked #9,298,479 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Dutch
- CDN: Fastly
- Weight: 5.2 MB · 31 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on DigitalOcean (178.128.137.126)
- DNS: zxcs.be
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only, DNSSEC signed
- SSL: Certainly, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 10,278,931, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted