What powers ddef.jp?
Last seen Oct 2026 · 15 technologies across 8 categories
Analytics
Google Analytics
since Sep 2026
CDN
Amazon S3
since Sep 2026
cdnjs
since Sep 2026
Cloudflare
since Sep 2026
Google Hosted Libraries
since Sep 2026
jsDelivr
since Sep 2026
JavaScript libraries
PaaS
Amazon Web Services
since Sep 2026
Programming languages
Java
since Aug 2022
Security
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Sep 2026
Web servers
Nginx
since Oct 2024
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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Nov 2026 robots.txt appeared
- Nov 2026 * added to robots.txt
- Oct 2026 * removed from robots.txt
- Oct 2026 robots.txt removed
AI Crawlers
No AI crawlers blocked
Audience
- 96% phone
- 3% desktop
- 1% tablet
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.54 / 10 · ranked #854,554 of all domains
31 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Weight: 0.0 MB · 2 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on KIR - KAGOYA JAPAN Inc. (133.18.192.31)
- Email: ddef.jp
- Email security: SPF (soft fail), DMARC monitor only
- SSL: GlobalSign, RSA 2048, wildcard, expires Mar 2027
- Common Crawl link graph: rank 1,212,733, 5 hosts
- Verified with: GlobalSign
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| sta.ddef.jp | 14 |
| sp.ddef.jp | 3 |