What powers 
d2cr.co.jp?
Last seen Sep 2026 · 40 technologies across 18 categories
Analytics
Authentication
CDN
CMS
Databases
Font scripts
JavaScript libraries
Live chat
Marketing automation
Miscellaneous
PaaS
Performance
Programming languages
Security
Tag managers
Web servers
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Audience
- 73% desktop
- 27% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
7.05 / 10 · ranked #35,682 of all domains
67 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.4 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 2500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 5.2 MB · 138 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Amazon Web Services (54.95.16.30)
- Email: no MX record returned, SPF names Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Amazon Trust Services, RSA 2048, wildcard, expires Dec 2026
- Common Crawl link graph: rank 1,894,875, 12 hosts
- Verified with: Firebase, Google, Meta Business
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| canvas.d2cr.co.jp | 36 |
| www.d2cr.co.jp | 32 |
| r-ibrary.d2cr.co.jp | 23 |
Full technology history →
Report an incorrect detection
Recent changes
- detected HSTS Mar 2026
- detected Priority Hints Jan 2026