What powers 
klassroom.fr?
Last seen Aug 2026 · 25 technologies across 13 categories
CDN
Databases
Ecommerce
Cart Functionality
since Nov 2022
Font Scripts
Font Awesome
since Feb 2018
Google Font API
since Feb 2018
JavaScript Frameworks
JavaScript libraries
Moment.js
since Jan 2019
Slick
since Jan 2019
Swiper
since Sep 2022
Twitter typeahead.js
since Jan 2019
Maps
Google Maps
since Jan 2019
Miscellaneous
Open Graph
since Sep 2022
Payment processors
Stripe
since Sep 2020
Programming languages
Lua
since Sep 2020
Web Frameworks
Web servers
Webmail
Google Workspace
since Aug 2022
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 65% phone
- 35% desktop
France
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.62 / 10 · ranked #806,079 of all domains
50 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 1.8 MB · 73 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on MAGICRETAIL (77.87.108.215)
- DNS: IBM NS1
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Gandi, RSA 2048, wildcard, expires Dec 2026
- Common Crawl link graph: rank 3,027,633, 3 hosts
- Verified with: Google
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| klassroom.fr | 16 |
| www.klassroom.fr | 16 |
| web.klassroom.fr | 14 |