What powers rk-japan.co.jp?
Last seen Oct 2026 · 47 technologies across 20 categories
Analytics
Authentication
Caching
CDN
CMS
Cookie compliance
Databases
Font scripts
JavaScript graphics
JavaScript libraries
Miscellaneous
Performance
Programming languages
Security
Tag managers
UI frameworks
Video players
Web servers
Webmail
WordPress plugins
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
AI Crawlers
No AI crawlers blocked
Audience
- 61% phone
- 39% desktop
Japan
Philippines
Malaysia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.14 / 10 · ranked #485,840 of all domains
54 referring domains · OpenPageRank
Core Web Vitals
| LCP | 4 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 2500 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Japanese
- Weight: 6.4 MB · 131 requests
- WordPress theme: rk · all themes
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- RK Japan
- Founded: 2010
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on Cloudflare (104.21.30.94)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC quarantine
- SSL: JPRS, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 12,536,438, 4 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| global.rk-japan.co.jp | 38 |
| www.rk-japan.co.jp | 32 |
| mc.rk-japan.co.jp | 25 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Ivory Search Oct 2026
- detected MetaSlider Oct 2026
- dropped Cloudflare Turnstile Sep 2026
- dropped MetaSlider Aug 2026
- detected Cloudflare Browser Insights Jul 2026
- detected Cloudflare Rocket Loader Jul 2026
- detected HTTP/3 Jul 2026
- detected WordPress Super Cache Jun 2026