What powers castellumhogewoerd.nl?
Last seen Aug 2026 · 15 technologies across 10 categories
Analytics
Microsoft Clarity
since Jul 2021
CMS
WordPress
since Jan 2019
Databases
MySQL
since Jan 2019
JavaScript libraries
Marketing automation
MailChimp
since Sep 2024
Miscellaneous
Open Graph
since Sep 2022
RSS
since Dec 2022
Performance
Priority Hints
since Nov 2023
Programming languages
PHP
since Jan 2019
Web servers
Nginx
since Jan 2019
WordPress plugins
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 79% phone
- 21% desktop
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.92 / 10 · ranked #637,274 of all domains
58 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Dutch (Netherlands)
- CDN: Google
- Weight: 5.0 MB · 35 requests
- WordPress theme: pro (child: pro-child) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Castellum Hoge Woerd
- Founded: 2015
- Country: Netherlands
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on Google (35.214.242.114)
- Email: no MX record returned, SPF names Microsoft 365
- Email security: SPF (hard fail), DMARC quarantine, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 3,030,350, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Priority Hints Jan 2026
- dropped Priority Hints Dec 2025