What powers svszeist.nl?
Last seen Sep 2026 · 40 technologies across 20 categories
CDN
Cloudflare
since Feb 2025
CMS
Databases
MySQL
since Feb 2025
Font scripts
Font Awesome
since Feb 2025
Google Font API
since Jan 2019
JavaScript frameworks
GSAP
since Feb 2025
JavaScript libraries
Miscellaneous
Operating systems
Windows Server
since Jan 2019
Page builders
WordPress Block Editor
since Feb 2025
Performance
Priority Hints
since Oct 2025
Programming languages
PHP
since Feb 2025
Security
Cloudflare Bot Management
since Feb 2025
HSTS
since Apr 2024
UI frameworks
Video players
Vimeo
since Feb 2025
Web frameworks
Microsoft ASP.NET
since Jan 2019
Web servers
Webmail
Microsoft 365
since Aug 2022
Widgets
WordPress plugins
Essential Addons for Elementor
since Feb 2025
GenerateBlocks
since Oct 2025
RankMath SEO
since Oct 2025
WordPress themes
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 Sep 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
2.49 / 10 · ranked #2,511,501 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Dutch (Netherlands)
- Weight: 1.7 MB · 35 requests
- WordPress theme: blocksy (child: blocksy-child) · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Stichtse Vrije School
- Country: Netherlands
From Wikidata (CC0).
Infrastructure
- Hosted on NL-BIT BIT BV (185.173.21.33, IPv6)
- DNS: dn-s.nl
- Email: mx.microsoft
- Email security: SPF (hard fail), no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 4,068,555, 3 hosts
- Verified with: KnowBe4
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| opendag.svszeist.nl | 28 |
| www.svszeist.nl | 17 |
| svszeist.nl | 9 |
| roosterwijzigingen.svszeist.nl | 4 |