What powers d5f.org?
Last seen Aug 2026 · 7 technologies across 7 categories
Authentication
CMS
Databases
Hosting
JavaScript libraries
Programming languages
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
- 80% phone
- 20% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.84 / 10 · ranked #697,847 of all domains
80 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 2.0 MB · 43 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Daigo Fukuryu Maru Exhibition Hall
- Founded: 1976
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on Xserver (85.131.213.45)
- DNS: Xserver
- Email: d5f.org
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 642,344, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- dropped Apache HTTP Server Jul 2026