What powers 
jjk.or.jp?
Last seen Oct 2026 · 23 technologies across 17 categories
Analytics
CDN
CMS
Databases
Editors
Font scripts
JavaScript libraries
Miscellaneous
Page builders
Performance
Programming languages
Security
Tag managers
UI frameworks
Web servers
Webmail
WordPress themes
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
- Aug 2026 robots.txt appeared
- Aug 2026 * added to robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 91% phone
- 9% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.88 / 10 · ranked #666,133 of all domains
21 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.4 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 2.4 MB · 130 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Sakura Internet (133.167.8.147)
- DNS: customer.ne.jp
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 217,955, 2 hosts
- Verified with: Apple Business
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.jjk.or.jp | 18 |
| lp.jjk.or.jp | 9 |
| old.jjk.or.jp | 3 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Apple iCloud Mail Jul 2026
- detected Microsoft 365 Jun 2026
- dropped Microsoft 365 May 2026
- detected Twitter Emoji (Twemoji) Dec 2025