What powers 42tokyo.jp?
Last seen Jun 2026 · 52 technologies across 22 categories
A/B Testing
Google Optimize
since Aug 2021
Advertising
Twitter Ads
since Jun 2023
Analytics
Cloudflare Browser Insights
since Dec 2025
Google Analytics
since Feb 2020
Microsoft Clarity
since Sep 2021
CDN
Amazon CloudFront
since Feb 2020
Amazon S3
since Feb 2020
cdnjs
since May 2022
Cloudflare
since May 2022
jQuery CDN
since Dec 2023
jsDelivr
since Mar 2026
Unpkg
since Mar 2026
CRM
Salesforce
since Aug 2022
Google Workspace
since Aug 2022
Mailjet
since Aug 2022
Font scripts
Typekit
since May 2024
Issue trackers
Sentry
since May 2022
JavaScript frameworks
JavaScript graphics
Chart.js
since Feb 2020
particles.js
since Mar 2026
JavaScript libraries
Miscellaneous
Operating systems
Ubuntu
since Mar 2026
PaaS
Amazon Web Services
since Feb 2020
Performance
Priority Hints
since Jul 2025
Turbolinks
since Oct 2021
Programming languages
Reverse proxies
Envoy
since Jun 2024
Security
Cloudflare Bot Management
since Sep 2024
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Feb 2020
UI frameworks
Tailwind CSS
since Apr 2022
Web frameworks
Ruby on Rails
since Feb 2020
Web servers
Audience
- 68% desktop
- 32% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.69 / 10 · ranked #362,087 of all domains
72 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese (Japan)
- CDN: Amazon CloudFront
- Weight: 5.2 MB · 210 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| apply.42tokyo.jp | 25 |
| 42tokyo.jp | 21 |
| note.42tokyo.jp | 21 |
| terminal-game.42tokyo.jp | 13 |
| megatron.42tokyo.jp | 10 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare Bot Management Apr 2026
- dropped Svelte Jan 2026
- detected Cloudflare Browser Insights Dec 2025
- dropped Cloudflare Bot Management Nov 2025
- dropped LazySizes Aug 2025
- dropped Nuxt.js Aug 2025
- dropped Vue.js Aug 2025