What powers 
gzb.nl?
Last seen Aug 2026 · 17 technologies across 12 categories
Analytics
Authentication
Ecommerce
Font scripts
JavaScript frameworks
JavaScript graphics
JavaScript libraries
Miscellaneous
Security
Tag managers
Webmail
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 89% phone
- 11% desktop
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.60 / 10 · ranked #386,347 of all domains
35 referring domains · OpenPageRank
Core Web Vitals
| LCP | 6.1 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 2700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Dutch
- Weight: 4.6 MB · 119 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- GZB
- Founded: 1901
- Country: Indonesia
From Wikidata (CC0).
Infrastructure
- Hosted on INFOSUPPORT4 (185.101.41.31)
- DNS: solcon.nl
- Email: Microsoft 365
- Email security: no SPF record, no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 3,056,266, 2 hosts
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 Cart Functionality Jul 2026
- dropped core-js Jul 2026
- detected Facebook Login Jul 2026
- dropped Facebook Pixel Jul 2026
- detected Google Analytics Jul 2026
- detected Google Tag Manager Jul 2026
- detected GSAP Jul 2026
- detected Hotjar Jul 2026
- detected HSTS Jul 2026
- detected MailChimp Jul 2026
- detected Mailjet Jul 2026
- detected Microsoft 365 Jul 2026
- detected Microsoft Clarity Jul 2026
- detected Open Graph Jul 2026
- detected React Jul 2026
- detected styled-components Jul 2026
- detected Swiper Jul 2026
- detected Three.js Jul 2026
- detected Typekit Jul 2026
- dropped YouTube Jul 2026