What powers 
sintjacob.nl?
Last seen Sep 2026 · 20 technologies across 13 categories
Caching
CMS
Databases
JavaScript frameworks
JavaScript libraries
Miscellaneous
PaaS
Programming languages
Security
Web servers
Webmail
WordPress plugins
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 found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 70% phone
- 30% desktop
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.69 / 10 · ranked #768,977 of all domains
33 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Dutch (Netherlands)
- Weight: 1.4 MB · 43 requests
- WordPress theme: alloy-solder · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Hetzner (23.88.85.54)
- DNS: Azure DNS
- Email: Microsoft 365
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, ECDSA P384, expires Jan 2027
- Common Crawl link graph: rank 14,614,115, 5 hosts
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
- dropped Google Tag Manager Jan 2026
- detected GSAP Jan 2026
- detected jQuery UI Jan 2026
- detected Svelte Jan 2026