What powers irii.jp?
Last seen Aug 2026 · 2 technologies across 2 categories
JavaScript libraries
Web servers
Apache HTTP Server
since Jan 2019
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
- 61% desktop
- 39% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.99 / 10 · ranked #577,323 of all domains
44 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.6 s |
| INP | 200 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 5.0 MB · 55 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Industrial Research Institute of Ishikawa
- Founded: 1877
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on SINET-AS Research Organization of Information and Systems, National Institute of Informatics (202.242.131.2)
- DNS: sinet.ad.jp
- Email: irii.jp
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 1,194,020
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted