What powers tonkou.ed.jp?
Last seen Oct 2026 · 19 technologies across 13 categories
Analytics
Google Analytics
since Nov 2021
CMS
Databases
MySQL
since Sep 2021
Font scripts
Google Font API
since Sep 2021
JavaScript libraries
Miscellaneous
Performance
LazySizes
since Feb 2022
Programming languages
PHP
since May 2019
Security
Really Simple SSL & Security
since Apr 2025
Web servers
Apache HTTP Server
since May 2019
Webmail
Microsoft 365
since Apr 2025
WordPress plugins
EWWW Image Optimizer
since Feb 2022
WordPress themes
Lightning
since Feb 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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 82% phone
- 18% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.73 / 10 · ranked #4,783,926 of all domains
5 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| CLS | 0 |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 1.8 MB · 71 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Tsuruga High School
- Founded: 1906
- Country: Japan
From Wikidata (CC0).
Infrastructure
- DNS: mitene.ad.jp
- Email: Microsoft 365
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Amazon Trust Services, RSA 2048, expires Mar 2027
- Common Crawl link graph: rank 15,208,752
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted