What powers seika-ns.ed.jp?
Last seen Sep 2026 · 13 technologies across 12 categories
Analytics
Google Analytics
since May 2019
Font scripts
Google Font API
since May 2019
Hosting
Sakura Internet
since Sep 2022
JavaScript frameworks
JavaScript graphics
JavaScript libraries
Operating systems
CentOS
since May 2019
Programming languages
Video players
YouTube
since May 2019
Web servers
Webmail
Google Workspace
since Sep 2022
Widgets
SnapWidget
since Feb 2022
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
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.61 / 10 · ranked #5,617,727 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 7 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 6200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 16.4 MB · 87 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Sakura Internet (133.242.147.31)
- DNS: Sakura Internet
- Email: Google Workspace
- Email security: no SPF record, DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, expires Oct 2026
- Common Crawl link graph: rank 4,167,142
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted