What powers c-s-s-t.jp?
Last seen Sep 2026 · 14 technologies across 11 categories
Analytics
CDN
cdnjs
since Mar 2023
Cloudflare
since Mar 2023
Google Hosted Libraries
since Aug 2022
jQuery CDN
since Aug 2022
Font scripts
Hosting
Sakura Internet
since Feb 2024
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Operating systems
UNIX
since Aug 2022
Programming languages
Tag managers
Google Tag Manager
since Aug 2022
Web server extensions
Web servers
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 83% phone
- 17% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.54 / 10 · ranked #6,165,337 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| INP | 325 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 0.5 MB · 22 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Sakura Internet (153.126.196.221)
- Email: no MX record returned
- Email security: SPF (soft fail)
- SSL: GoGetSSL, RSA 2048, expires Mar 2027
- Common Crawl link graph: rank 13,078,412
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted