What powers koyo.ac.jp?
Last seen Sep 2026 · 5 technologies across 5 categories
CDN
jQuery CDN
since Feb 2022
JavaScript libraries
Security
HSTS
since Jul 2026
Web servers
Apache HTTP Server
since Jan 2019
Webmail
Google Workspace
since Aug 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
- 66% phone
- 34% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.44 / 10 · ranked #961,844 of all domains
26 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 250 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 2.6 MB · 17 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on FINE Canon IT Solutions Inc. (210.134.168.2)
- Email: no MX record returned, SPF names Google Workspace
- Email security: SPF (soft fail)
- SSL: JPRS, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 9,603,504, 2 hosts
- Verified with: Google
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.koyo.ac.jp | 5 |
| koyo.ac.jp | 4 |
Full technology history →
Report an incorrect detection
Recent changes
- detected HSTS Jul 2026