What powers 
siu.ac.jp?
Last seen Oct 2026 · 22 technologies across 13 categories
Advertising
Analytics
CDN
JavaScript libraries
Miscellaneous
Operating systems
Performance
Programming languages
Security
Tag managers
UI frameworks
Web frameworks
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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Nov 2026 * added to robots.txt
- Nov 2026 claudebot removed from robots.txt
- Oct 2026 * removed from robots.txt
- Oct 2026 claudebot added to robots.txt
- Oct 2026 * added to robots.txt
- Oct 2026 claudebot removed from robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 51% desktop
- 49% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.75 / 10 · ranked #280,051 of all domains
100 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 7.8 MB · 155 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Sapporo International University
- Founded: 1969
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on Sakura Internet (133.167.8.183)
- DNS: h-ix.jp
- Email: secure.ne.jp
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 2,105,871, 8 hosts
- Verified with: Google
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| siu.ac.jp | 15 |
| www.siu.ac.jp | 15 |
| lms.siu.ac.jp | 4 |
| cplan-portal.siu.ac.jp | 3 |
| www2.siu.ac.jp | 3 |
| library-opac.siu.ac.jp | 2 |
Full technology history →
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Recent changes
- dropped Google Hosted Libraries Aug 2026
- detected Priority Hints Mar 2026