What powers 
gfd-dennou.org?
Last seen Oct 2026 · 5 technologies across 5 categories
JavaScript libraries
Operating systems
Debian
since Aug 2016
UI frameworks
Web server extensions
Web servers
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 79% desktop
- 21% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.53 / 10 · ranked #397,056 of all domains
91 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.3 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 0.1 MB · 7 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered Sep 1998 (28 years) via Network Solutions, LLC, renews Sep 2034
- Hosted on NCA5 - Kyoto University (130.54.59.159)
- DNS: gfd-dennou.org
- Email: gfd-dennou.org
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 451,930, 11 hosts
- Verified with: Google
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| wtk.gfd-dennou.org | 5 |
| dennou-q.gfd-dennou.org | 3 |
| www.gfd-dennou.org | 3 |
| dennou-h.gfd-dennou.org | 2 |