What powers 
npr-riken.co.jp?
Last seen Sep 2026 · 7 technologies across 6 categories
Analytics
Google Analytics
since Nov 2023
JavaScript libraries
Security
HSTS
since Nov 2023
Tag managers
Google Tag Manager
since Nov 2023
UI frameworks
Bootstrap
since Nov 2023
Webmail
Google Workspace
since May 2024
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 56% desktop
- 44% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.13 / 10 · ranked #488,857 of all domains
32 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 10.7 MB · 117 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- NPR-RIKEN CORPORATION
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on TSUKAERUNET Tsukaeru.net, Web Hosting Company, Japan (121.50.42.230)
- DNS: Onamae.com
- Email: Google Workspace
- Email security: SPF (hard fail), DMARC quarantine
- SSL: DigiCert, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 9,302,528
- Verified with: Box, Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted