What powers 4sas.jp?
Last seen Aug 2026 · 14 technologies across 10 categories
Advertising
Google AdSense
since Oct 2023
Analytics
Cloudflare Browser Insights
since Aug 2026
Google Analytics
since Oct 2023
CDN
Cloudflare
since Aug 2026
JavaScript frameworks
Svelte
since Aug 2026
Miscellaneous
Operating systems
Ubuntu
since Jun 2024
Programming languages
Node.js
since Aug 2026
Security
reCAPTCHA
since Oct 2023
UI frameworks
SvelteKit
since Aug 2026
Web servers
AI Crawlers
robots.txt could not be read at the last check (Aug 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.45 / 10 · ranked #30,003,751 of all domains
0 referring domains · OpenPageRank
Search traffic
2 est. monthly organic visits (US)
1 keywords in Google's top 30
Core Web Vitals
| LCP | 1.4 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- CDN: Cloudflare
- Weight: 0.8 MB · 73 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Subdomains
| Host | Techs |
|---|---|
| stream-schedule.4sas.jp | 12 |
| 4sas.jp | 6 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare Aug 2026
- detected Cloudflare Browser Insights Aug 2026
- dropped Google Tag Manager Aug 2026
- detected HTTP/3 Aug 2026
- detected Node.js Aug 2026
- detected Open Graph Aug 2026
- detected Svelte Aug 2026
- detected SvelteKit Aug 2026
- detected Vite Aug 2026
- detected Google Tag Manager Jan 2026