What powers 
irset.org?
Last seen Sep 2026 · 11 technologies across 10 categories
Advertising
Analytics
CMS
Hosting
JavaScript libraries
Miscellaneous
Programming languages
UI frameworks
Web servers
Widgets
AI Crawlers
Restricts 4 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- CCBot Restricted
Search and AI assistants
- Amazonbot Restricted
- Applebot Restricted
- PerplexityBot Restricted
The other 29 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
4 of 33 AI crawlers restricted
Audience
- 62% desktop
- 38% phone
France
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.55 / 10 · ranked #844,072 of all domains
67 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: French
- Weight: 2.4 MB · 41 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Institut de Recherche en Santé, Environnement et Travail
- Founded: 2009
- Country: France
From Wikidata (CC0).
Infrastructure
- DNS: univ-rennes1.fr
- Email: renater.fr
- Email security: no SPF record, no DMARC record, CAA
- SSL: HARICA, ECDSA P256, expires Feb 2027
- Common Crawl link graph: rank 2,827,915
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Microsoft Advertising Jul 2026
- detected Microsoft Clarity Jul 2026