What powers 
sina.net?
Last seen Jan 2026 · 2 technologies across 2 categories
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
United States
Japan
Hong Kong SAR China
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.12 / 10 · ranked #492,077 of all domains
40 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Infrastructure
- Hosted on CHINA169-BJ China Unicom Beijing Province Network (202.108.37.43)
- DNS: sina.com.cn
- Email: sina.net
- Email security: SPF (hard fail), no DMARC record, MTA-STS, BIMI
- SSL: DigiCert, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 2,654,460, 128 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| mail.sina.net | 2 |
| www.sina.net | 2 |