What powers 
duperre.org?
Last seen Sep 2026 · 11 technologies across 7 categories
JavaScript libraries
Miscellaneous
PaaS
Programming languages
UI frameworks
Web servers
Webmail
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 53% desktop
- 47% phone
France
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #351,133 of all domains
123 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: French
- Weight: 56.9 MB · 44 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- École Duperré
- Founded: 1864
- Country: France
From Wikidata (CC0).
Infrastructure
- Registered Apr 2002 (24 years) via OVH sas, renews Apr 2027
- Hosted on OVHcloud (213.186.33.2, IPv6)
- DNS: OVHcloud
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, expires Jan 2027
- Common Crawl link graph: rank 523,521, 4 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| duperre.org | 11 |
| www.duperre.org | 10 |
Full technology history →
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Recent changes
- detected Apache HTTP Server Jun 2026