What powers retro-colo.fr?
Last seen Sep 2026 · 5 technologies across 4 categories
Analytics
Google Analytics
since Aug 2022
PaaS
OVHcloud
since Aug 2022
Programming languages
Adobe Flash
since Aug 2022
Web servers
Apache HTTP Server
since Aug 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 100% phone
France
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.16 / 10 · ranked #10,414,851 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 0.3 MB · 32 requests
- Structured data: Microdata
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on OVHcloud (213.186.33.19)
- DNS: OVHcloud
- Email: OVHcloud
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 13,691,614, 2 hosts
- Verified with: Google
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Apache HTTP Server Jun 2026