What powers czo.nl?
Last seen Aug 2026 · 10 technologies across 9 categories
Analytics
Google Analytics
since Jan 2019
CMS
JavaScript libraries
Miscellaneous
PWA
since Aug 2022
Programming languages
PHP
since Jan 2019
Security
HSTS
since May 2024
Tag managers
Google Tag Manager
since Jun 2022
Web servers
Nginx
since Apr 2021
Webmail
Microsoft 365
since Aug 2022
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
- 51% phone
- 49% desktop
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.96 / 10 · ranked #601,908 of all domains
44 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 50 ms |
| CLS | 0.2 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 0.7 MB · 74 requests
- Structured data: JSON-LD
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Leaseweb (87.236.103.153, IPv6)
- DNS: oxilion.nl
- Email: mx.microsoft
- Email security: SPF (soft fail), DMARC reject, DNSSEC signed
- SSL: Let's Encrypt, ECDSA P384, expires Nov 2026
- Common Crawl link graph: rank 9,446,854, 5 hosts
- Verified with: Sophos
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.czo.nl | 8 |
| mijn.czo.nl | 6 |