What powers rf28.com?
Last seen Sep 2026 · 22 technologies across 14 categories
Advertising
Affiliate programs
Analytics
CDN
Ecommerce
Font scripts
JavaScript libraries
Miscellaneous
PaaS
Security
Tag managers
UI frameworks
Web servers
Webmail
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 Sep 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 83% phone
- 17% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.76 / 10 · ranked #4,568,865 of all domains
14 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| INP | 175 ms |
| CLS | 0 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 14.0 MB · 213 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Amazon Web Services (52.85.61.73)
- DNS: Amazon Route 53
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Amazon Trust Services, RSA 2048, wildcard, expires Feb 2027
- Common Crawl link graph: rank 9,913,043
- Verified with: Google, Meta Business
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
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Recent changes
- detected theTradeDesk Sep 2026