What powers 
cwsjapan.org?
Last seen Sep 2026 · 26 technologies across 13 categories
Analytics
CMS
Databases
Font scripts
Hosting
JavaScript libraries
Miscellaneous
Page builders
Performance
Programming languages
UI frameworks
Video players
Web servers
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 56% desktop
- 44% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.42 / 10 · ranked #980,443 of all domains
38 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 5.3 MB · 117 requests
- WordPress theme: alone (child: cwsjapan) · all themes
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- CWS Japan
- Founded: 2012
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on Sakura Internet (49.212.180.212)
- DNS: Sakura Internet
- Email: cwsjapan.org
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 13,030,355, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Twitter Emoji (Twemoji) Jan 2026
- dropped Apache HTTP Server Dec 2025
- dropped CentOS Dec 2025
- dropped Contact Form 7 Dec 2025
- dropped Modernizr Dec 2025
- dropped Really Simple SSL & Security Dec 2025
- dropped Slider Revolution Dec 2025
- dropped Snap.svg Dec 2025
- dropped The Events Calendar Dec 2025
- dropped Twitter Emoji (Twemoji) Dec 2025
- dropped WP Fastest Cache Dec 2025
- detected Animate.css Nov 2025
- detected Font Awesome Nov 2025
- detected Nginx Nov 2025
- detected Priority Hints Nov 2025
- detected wpBakery Nov 2025