What powers nim.ac.cn?
Last seen Aug 2026 · 17 technologies across 9 categories
Analytics
CMS
Font scripts
JavaScript Frameworks
JavaScript graphics
JavaScript libraries
Programming languages
UI 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 Sep 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| cnas china | #65 | 0 |
| si unit pico | #38 | 0 |
| si definition science | #94 | 0 |
| si chemistry definition | #84 | 0 |
| national institute of metrology | #82 | 0 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Audience
- 100% desktop
China
Hong Kong SAR China
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.38 / 10 · ranked #173,911 of all domains
114 referring domains · OpenPageRank
Search traffic
0 est. monthly organic visits (US)
5 keywords in Google's top 30
Core Web Vitals
| LCP | 0.9 s |
| INP | 25 ms |
| CLS | 0.05 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Chinese
- Weight: 11.7 MB · 35 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- National Institute of Metrology
- Founded: 1955
- Country: People's Republic of China
From Wikidata (CC0).
Infrastructure
- Hosted on CHINA169-BJ China Unicom Beijing Province Network (111.203.6.18)
- DNS: sfn.cn
- Email: eyou.net
- Email security: SPF (soft fail), no DMARC record
- SSL: DigiCert, RSA 2048, wildcard, expires Jan 2027
- Common Crawl link graph: rank 727,538, 15 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| jlkj.nim.ac.cn | 13 |
| en.nim.ac.cn | 9 |
| www.nim.ac.cn | 9 |