What powers 
rsz.be?
Last seen Aug 2026 · 7 technologies across 5 categories
Analytics
JavaScript libraries
Security
UI frameworks
Web servers
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
- 54% desktop
- 46% phone
Belgium
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #337,660 of all domains
99 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Dutch
- Weight: 0.7 MB · 25 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- National Social Security Office
- Founded: 1944
- Country: Belgium
From Wikidata (CC0).
Infrastructure
- Hosted on SMALS-MVM (185.153.69.65)
- DNS: fediap.be
- Email: fediap.be
- Email security: SPF (hard fail), DMARC quarantine
- SSL: HARICA, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 8,212,740, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.rsz.be | 6 |
| rsz.be | 4 |
Full technology history →
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Recent changes
- detected HSTS Jan 2026