What powers 
occh.or.jp?
Last seen Sep 2026 · 15 technologies across 7 categories
CDN
CMS
JavaScript frameworks
JavaScript libraries
Miscellaneous
Programming languages
Security
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
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.99 / 10 · ranked #578,216 of all domains
58 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese (Japan)
- CDN: Cloudflare
- Weight: 5.3 MB · 71 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Osaka Center For Cultural Heritage
- Founded: 1972
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on OCN NTT Communications Corporation (60.43.230.234)
- DNS: xdomain.ne.jp
- Email: occh.or.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: Google Trust Services, ECDSA P256, expires Jan 2027
- Common Crawl link graph: rank 2,881,846
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
- dropped Apache HTTP Server Aug 2026
- dropped Google Analytics Aug 2026
- dropped Google Sign-in Aug 2026
- dropped MooTools Aug 2026
- detected Cloudflare Jul 2026
- detected Cloudflare Bot Management Jul 2026
- detected HSTS Jul 2026
- detected HTTP/3 Jul 2026
- detected Jimdo Jul 2026
- detected jQuery CDN Jul 2026
- detected Lodash Jul 2026
- detected Modernizr Jul 2026
- detected Mustache Jul 2026
- detected Open Graph Jul 2026
- detected PHP Jul 2026
- detected RSS Jul 2026
- detected Slick Jul 2026