What powers 
rcees.ac.cn?
Last seen Aug 2026 · 20 technologies across 11 categories
Font scripts
JavaScript frameworks
JavaScript graphics
JavaScript libraries
Live chat
Tencent QQ
since Aug 2023
Miscellaneous
RSS
since Aug 2023
Swiper Slider
since Aug 2022
Programming languages
Adobe Flash
since Aug 2023
Java
since Aug 2022
Security
HSTS
since Sep 2022
UI frameworks
Web Servers
Apache HTTP Server
since Jan 2016
Nginx
since Aug 2022
Widgets
FlexSlider
since Dec 2023
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
China
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #319,871 of all domains
64 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Chinese (China)
- Weight: 3.6 MB · 54 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on CSTNET-AS-AP Computer Network Information Center of Chinese Academy of Sciences CNIC-CAS (159.226.240.66)
- DNS: rcees.ac.cn
- Email: cstnet.cn
- Email security: SPF (hard fail), no DMARC record
- SSL: China Financial Certification Authority, RSA 2048, wildcard, expires Dec 2026
- Common Crawl link graph: rank 511,275, 26 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| hjhx.rcees.ac.cn | 11 |
| eekw.rcees.ac.cn | 10 |
| ir.rcees.ac.cn | 10 |
| et.rcees.ac.cn | 6 |
| www.rcees.ac.cn | 1 |