What powers 
jcd.or.jp?
Last seen Sep 2026 · 16 technologies across 13 categories
Analytics
Google Analytics
since Jul 2022
CDN
Google Hosted Libraries
since Jul 2022
CMS
WordPress
since Jul 2022
Databases
MySQL
since Jul 2022
Hosting
Sakura Internet
since Dec 2022
JavaScript frameworks
JavaScript libraries
Modernizr
since Jul 2022
Miscellaneous
Open Graph
since Dec 2022
Performance
Priority Hints
since Sep 2026
Programming languages
SEO
Web servers
Nginx
since Jul 2022
WordPress plugins
Jetpack
since Nov 2023
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 89% desktop
- 11% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #361,060 of all domains
70 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 4.0 MB · 98 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- JCD (Japan Commercial Environmental Design Association on Wikidata)
- Founded: 1961
- Country: Japan
- Profiles: Facebook, X, Instagram, YouTube
From the homepage's own structured data (Oct 2026) and Wikidata (CC0).
Infrastructure
- Hosted on Sakura Internet (49.212.243.154)
- DNS: Sakura Internet
- Email: jcd.or.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 3,135,803, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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