What powers js-cs.jp?
Last seen Aug 2026 · 18 technologies across 13 categories
CMS
Databases
Font scripts
Hosting
JavaScript libraries
Miscellaneous
Page builders
Performance
Programming languages
Security
Web servers
WordPress plugins
WordPress themes
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.32 / 10 · ranked #2,846,269 of all domains
10 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.9 s |
| INP | 25 ms |
| CLS | 0.05 |
| TTFB | 3100 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 2.9 MB · 94 requests
- WordPress theme: lightning (child: lightning-iap) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- 日本子ども社会学会
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Sakura Internet (202.181.97.41)
- Email: js-cs.jp
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 10,339,687, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.js-cs.jp | 16 |
| js-cs.jp | 11 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Priority Hints Jul 2026