What powers 
aircas.ac.cn?
Last seen Aug 2026 · 9 technologies across 7 categories
Font scripts
JavaScript libraries
Programming languages
Java
since Mar 2023
Security
HSTS
since Mar 2023
UI frameworks
Web frameworks
Spring
since Mar 2023
Web servers
Nginx
since Sep 2024
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
- 100% desktop
United States
China
Hong Kong SAR China
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.86 / 10 · ranked #682,133 of all domains
59 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Aug 2026.
Infrastructure
- Hosted on CSTNET-AS-AP Computer Network Information Center of Chinese Academy of Sciences CNIC-CAS (159.226.242.62)
- DNS: sfndns.cn
- Email: cstnet.cn
- Email security: SPF (hard fail), no DMARC record
- SSL: DigiCert, RSA 4096, wildcard, expires Feb 2027
- Common Crawl link graph: rank 866,721, 9 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| english.aircas.ac.cn | 6 |
| sso.aircas.ac.cn | 4 |
Full technology history →
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Recent changes
- dropped FlexSlider Mar 2026