What powers 
cals-ed.go.jp?
Last seen Aug 2026 · 8 technologies across 8 categories
CMS
Databases
Font scripts
JavaScript libraries
Miscellaneous
Performance
Programming languages
Web servers
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
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| tecris | #19 | 0 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Audience
- 96% desktop
- 4% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.27 / 10 · ranked #222,091 of all domains
78 referring domains · OpenPageRank
Search traffic
0 est. monthly organic visits (US)
1 keywords in Google's top 30
Core Web Vitals
| LCP | 0.4 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 0.2 MB · 11 requests
- WordPress theme: zbench · all themes
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on PROX Prox System Design Inc. (210.143.102.166)
- DNS: ixent.ne.jp
- Email: cals-ed.go.jp
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 1,179,125, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Priority Hints Mar 2026
- detected Twitter Emoji (Twemoji) Mar 2026