What powers sem4v.fr?
Last seen Aug 2026 · 21 technologies across 17 categories
Analytics
Caching
CMS
Comment systems
Databases
Font scripts
JavaScript frameworks
JavaScript libraries
Maps
PaaS
Performance
Programming languages
Rich text editors
Security
UI frameworks
Web 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
- 89% phone
- 11% desktop
France
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.15 / 10 · ranked #3,219,201 of all domains
12 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: French (France)
- Weight: 0.6 MB · 23 requests
- WordPress theme: vernalis-theme · all themes
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on ALTERWAYHOSTING-NETWORK www.alterway.fr (31.15.30.107)
- DNS: OVHcloud
- Email: mailinblack.com
- Email security: SPF (hard fail), DMARC reject
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 25,283,079, 3 hosts
- Verified with: Brevo, GlobalSign, Google
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.sem4v.fr | 12 |
| agence-virtuelle.sem4v.fr | 9 |
| espacelocataire.sem4v.fr | 4 |
| sem4v.fr | 2 |
Full technology history →
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Recent changes
- dropped Redis Jul 2026
- dropped Redis Object Cache Jul 2026
- detected Priority Hints May 2026
- detected Redis May 2026
- detected Redis Object Cache May 2026
- detected WP Rocket May 2026