What powers jsces.org?
Last seen Oct 2026 · 11 technologies across 7 categories
Analytics
Google Analytics
since Feb 2024
Microsoft Clarity
since Feb 2024
Font scripts
Font Awesome
since Jul 2019
JavaScript libraries
Operating systems
CentOS
since May 2017
Programming languages
Tag managers
Google Tag Manager
since Feb 2024
Web servers
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 100% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.25 / 10 · ranked #442,909 of all domains
82 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| CLS | 0 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Weight: 7.6 MB · 169 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered Jan 2004 (22 years) via GMO Internet Group, Inc. d/b/a Onamae.com, renews Jan 2027
- Hosted on InfoSphere - NTT PC Communications, Inc. (119.245.141.13)
- DNS: Onamae.com
- Email: jsces.org
- Email security: SPF (soft fail), DMARC monitor only
- SSL: GlobalSign, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 102,874, 2 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted