What powers 
jeca.or.jp?
Last seen Aug 2026 · 12 technologies across 10 categories
Analytics
Font scripts
JavaScript Frameworks
JavaScript libraries
Miscellaneous
Operating systems
Photo galleries
Rich text editors
Web frameworks
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 75% desktop
- 25% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #342,252 of all domains
46 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 1.4 MB · 82 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- 一般社団法人日本電設工業協会 (Japan Electrical Construction Association on Wikidata)
- Founded: 1948
- Country: Japan
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on FUTURE Future Spirits Co.,Ltd. (219.99.172.135)
- DNS: asp-frontier.net
- Email: jeca.or.jp
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 12,009,509, 5 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.jeca.or.jp | 9 |
| melma.jeca.or.jp | 3 |