What powers 
iri.co.jp?
Last seen Aug 2026 · 10 technologies across 10 categories
Analytics
Google Analytics
since Apr 2019
CMS
WordPress
since Apr 2019
Databases
MySQL
since Apr 2019
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
Operating systems
CentOS
since Apr 2019
Programming languages
Web server extensions
Web servers
Webmail
Google Workspace
since Aug 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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.97 / 10 · ranked #592,032 of all domains
32 referring domains · OpenPageRank
Page
- Language: Japanese
- Weight: 1.3 MB · 37 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Internet Research Institute
- Founded: 1996
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on NIFCLOUD-NET FUJITSU LIMITED (116.118.238.91)
- Email: no MX record returned
- SSL: JPRS, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 6,778,769, 4 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted