What powers redelta.co.jp?
Last seen Aug 2026 · 27 technologies across 16 categories
Analytics
CDN
Databases
Font scripts
IaaS
JavaScript frameworks
JavaScript libraries
Miscellaneous
PaaS
Page builders
Performance
Programming languages
Security
Tag managers
UI frameworks
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 found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.88 / 10 · ranked #3,945,519 of all domains
7 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.6 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- CDN: Vercel
- Weight: 4.1 MB · 62 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Amazon Web Services (216.150.1.1)
- DNS: Onamae.com
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 63,941,620
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- detected HSTS Aug 2026
- detected Next.js Aug 2026
- detected Next.js App Router Aug 2026
- detected Priority Hints Aug 2026
- detected React Aug 2026
- detected Tailwind CSS Aug 2026
- detected Vercel Aug 2026
- detected Webpack Aug 2026
- dropped Priority Hints May 2026
- detected Cloudflare Oct 2025
- detected Cloudflare Bot Management Oct 2025