What powers sems.com.cn?
Last seen Sep 2026 · 8 technologies across 5 categories
CDN
Alibaba Cloud CDN
since Jan 2026
JavaScript frameworks
JavaScript libraries
Web frameworks
Web servers
Nginx
since Jun 2020
AI Crawlers
robots.txt could not be read at the last check (Oct 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 62% desktop
- 38% phone
Taiwan
Brazil
Netherlands
Poland
Australia
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.36 / 10 · ranked #7,877,304 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.8 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 4.1 MB · 43 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Alibaba Cloud (47.110.214.139)
- Email: no MX record returned
- SSL: Beijing Xinchacha Credit Management Co., Ltd., RSA 2048, wildcard, expires Feb 2027
- Common Crawl link graph: rank 15,525,773, 4 hosts
DNS records as swept Aug 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Alibaba Cloud CDN Jan 2026
- detected core-js Jan 2026