What powers howcrazy.co.jp?
Last seen Aug 2026 · 16 technologies across 12 categories
Analytics
Development
Ecommerce
JavaScript frameworks
Miscellaneous
PaaS
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
3.88 / 10 · ranked #672,027 of all domains
64 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- CDN: Vercel
- Weight: 1.3 MB · 78 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Industry: Professional services (declares
ProfessionalService)
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Amazon Web Services (216.150.1.65)
- DNS: Vercel
- Email: Google Workspace
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 11,133,414
- Verified with: Google
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
- dropped Clipboard.js Aug 2026
- dropped Contact Form 7 Aug 2026
- dropped core-js Aug 2026
- dropped Download Monitor Aug 2026
- dropped jQuery Aug 2026
- dropped LazySizes Aug 2026
- dropped MySQL Aug 2026
- dropped Nginx Aug 2026
- dropped PHP Aug 2026
- dropped Prism Aug 2026
- dropped reCAPTCHA Aug 2026
- dropped RSS Aug 2026
- dropped WordPress Aug 2026
- dropped WordPress Block Editor Aug 2026
- dropped Xserver Aug 2026
- detected Cart Functionality Jul 2026
- detected HSTS Jul 2026
- detected Next.js Jul 2026
- detected Next.js App Router Jul 2026
- detected Node.js Jul 2026
- detected Priority Hints Jul 2026
- detected React Jul 2026
- detected Tailwind CSS Jul 2026
- detected Turbopack Jul 2026
- detected Vercel Jul 2026
- detected Webpack Jul 2026
- dropped Google Font API Jan 2026