What powers jk-afterschool.jp?
Last seen Jun 2026 · 16 technologies across 11 categories
Analytics
Google Analytics
since Jan 2019
CDN
Font scripts
Glyphicons
since Jan 2019
Hosting
Sakura Internet
since Aug 2022
JavaScript libraries
Load balancers
Amazon ALB
since Sep 2021
PaaS
Amazon Web Services
since Sep 2021
Programming languages
Security
Cloudflare Bot Management
since Dec 2025
UI frameworks
Web servers
Nginx
since Jan 2019
Audience
- 61% desktop
- 39% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.19 / 10 · ranked #10,063,087 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.6 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 2.2 MB · 62 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- detected Cloudflare Dec 2025
- detected Cloudflare Bot Management Dec 2025