What powers crt-japan.jp?
Last seen Sep 2026 · 42 technologies across 18 categories
CDN
Amazon CloudFront
since Nov 2025
Amazon S3
since Nov 2025
cdnjs
since Nov 2023
Cloudflare
since Nov 2023
jsDelivr
since Nov 2023
CMS
Databases
MySQL
since Jul 2022
Editors
Font scripts
Font Awesome
since Nov 2023
Google Font API
since Jul 2022
Hosting panels
Plesk
since Jul 2022
JavaScript frameworks
JavaScript libraries
Miscellaneous
Operating systems
Ubuntu
since Nov 2023
PaaS
Amazon Web Services
since Nov 2025
Programming languages
SEO
UI frameworks
Video players
YouTube
since Jul 2022
Web server extensions
Web servers
Nginx
since Jul 2022
Webmail
Google Workspace
since Aug 2022
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
Open Page Rank
4.06 / 10 · ranked #529,563 of all domains
38 referring domains · OpenPageRank
Page
- Language: Japanese
- Weight: 3.4 MB · 80 requests
- Structured data: Microdata
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on TSUKAERUNET Tsukaeru.net, Web Hosting Company, Japan (121.50.41.231)
- DNS: Onamae.com
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 10,032,368, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| ninja-biz.crt-japan.jp | 20 |
| crt-japan.jp | 14 |
| survey-builder.crt-japan.jp | 12 |
| suarapetani.crt-japan.jp | 6 |
| ninja.crt-japan.jp | 5 |