What powers rkk.jp?
Last seen Jun 2026 · 36 technologies across 20 categories
Advertising
Analytics
CDN
CMS
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Databases
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Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| rk k | #24 | 9 |
| rkk | #83 | 2 |
| r kk | #90 | 0 |
| r kk | #44 | 0 |
| rkk youtube | #77 | 0 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 80% phone
- 18% desktop
- 2% tablet
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
6.69 / 10 · ranked #63,369 of all domains
271 referring domains · OpenPageRank
Search traffic
11 est. monthly organic visits (US)
5 keywords in Google's top 30
Core Web Vitals
| LCP | 1.8 s |
| INP | 100 ms |
| CLS | 0.2 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 11.5 MB · 395 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| rkk.jp | 27 |
| app.rkk.jp | 22 |
| recruit.rkk.jp | 13 |
| blog.rkk.jp | 12 |
| www.rkk.jp | 7 |
Full technology history →
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Recent changes
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- dropped Microsoft ASP.NET Apr 2026
- dropped 33Across Jan 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025