What powers ongakubu.org?
Last seen Jun 2026 · 19 technologies across 12 categories
Analytics
Google Analytics
since Jan 2022
Caching
Varnish
since Aug 2025
CDN
CMS
JavaScript frameworks
React
since Oct 2022
JavaScript libraries
Miscellaneous
PaaS
GitHub Pages
since Aug 2025
Programming languages
Node.js
since Jan 2022
Security
HSTS
since Sep 2022
Web servers
Webmail
Google Workspace
since Aug 2022
Audience
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.40 / 10 · ranked #7,471,194 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 2.0 MB · 53 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.ongakubu.org | 16 |
| concert.ongakubu.org | 5 |
Full technology history →
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Recent changes
- detected core-js Dec 2025