What powers nustec.or.jp?
Last seen Aug 2026 · 2 technologies across 2 categories
Security
HSTS
since Sep 2022
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
- 64% phone
- 36% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #365,056 of all domains
72 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.6 s |
| INP | 275 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 0.8 MB · 36 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Nuclear Safety Technology Center
- Founded: 1980
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on SO-NET Sony Network Communications Inc. (121.101.83.100)
- DNS: h2o.co.jp
- Email: nustec.or.jp
- Email security: no SPF record, no DMARC record
- SSL: GlobalSign, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 2,944,952, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted