Analysis performed on May 23, 2025
This is a comprehensive technical analysis of sina.com performed on May 23, 2025. The analysis includes DNS configuration, server information, WHOIS data, and HTTP response details.
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🤖 AI Analysis Summary
Based on the technical analysis provided, here's a concise overview of sina.com:
1. Purpose and Target: Sina.com appears to be a Chinese website, likely targeting Chinese-speaking users. The exact purpose is unclear from the limited content analysis.
2. Location: The domain is registered through a Chinese registrar (Xin Net Technology Corporation), suggesting it's primarily hosted and operated in China.
3. Tech: The site uses Nginx 1.5.2 as its web server. No other specific technologies were detected. The site has HTTPS enabled for secure connections.
4. SEO: The site lacks proper meta tags for SEO, including a meta description. It contains very little content (0 words detected), which may impact its search engine performance.
5. Security: HTTPS is enabled, which is good for security. However, HTTP Strict Transport Security (HSTS) is not implemented, which could be a minor security concern.
6. Summary: Sina.com is a Chinese website using basic web technologies. It has some accessibility features like proper alt text for images but lacks others like ARIA attributes. The site's SEO could be improved by adding meta tags and more content. While it uses HTTPS, implementing HSTS would enhance security. The domain is well-established, registered in 1998 and set to expire in 2027, indicating a long-standing online presence.
(Word count: 193)
🌐 Domain Information
The sina.com domain was registered on September 16, 1998, making it approximately 25 years old. The domain is currently active and registered through Xin Net Technology Corporation with an expiration date of September 15, 2027. The domain utilizes 7 nameservers across sina.com and sina.com.cn domains, with multiple security statuses in place including transfer and update restrictions.
WHOIS Registration Details
| Registrar | Xin Net Technology Corporation |
| Registration Date | 1998-09-16 |
| Expiration Date | 2027-09-15 |
| Name Servers | NS1.SINA.COM NS1.SINA.COM.CN NS2.SINA.COM NS2.SINA.COM.CN NS3.SINA.COM NS3.SINA.COM.CN NS4.SINA.COM |
⚙️ Technical Data
Sina.com operates on a robust DNS infrastructure with 8 nameservers split between sina.com and sina.com.cn domains, hosted on Hurricane Electric's network in Fremont, California. The site implements HTTPS for secure connections but lacks HSTS implementation, running on nginx version 1.5.2 as the web server. The email infrastructure utilizes three MX servers with equal priority (10) through sinamail.sina.com.cn, with SPF records configured for email security.
DNS Records
A Records
| Host | IP Address | TTL |
|---|---|---|
| @ | 64.71.151.11 | 60 |
MX Records
| Host | Mail Server | Priority | TTL |
|---|---|---|---|
| sina.com | freemx1.sinamail.sina.com.cn | 10 | 60 |
| sina.com | freemx3.sinamail.sina.com.cn | 10 | 60 |
| sina.com | freemx2.sinamail.sina.com.cn | 10 | 60 |
NS Records
| Host | Target | TTL |
|---|---|---|
| sina.com | ns1.sina.com.cn | 21600 |
| sina.com | ns2.sina.com | 21600 |
| sina.com | ns1.sina.com | 21600 |
| sina.com | ns4.sina.com.cn | 21600 |
| sina.com | ns3.sina.com.cn | 21600 |
| sina.com | ns3.sina.com | 21600 |
| sina.com | ns4.sina.com | 21600 |
| sina.com | ns2.sina.com.cn | 21600 |
SSL & Security
| HTTPS Status | ✅ Enabled |
| HSTS | ⚠️ Not Enabled |
| Security Summary | The website uses HTTPS for secure connections. |
Technologies
| Server Software | nginx/1.5.2 |
| Technology Summary | No specific technologies were detected. Server: nginx/1.5.2. |
Content Information
| Content Size | 0 words |
| Content Analysis | The site contains 0 words of content. It lacks proper meta tags for SEO. |
Server Information
| IP Address | 64.71.151.11 |
| Country | United States (US) |
| Region | California |
| City | Fremont |
| ISP | Hurricane Electric LLC |
HTTP Status Information
| Redirect Chain | |
| Response Time | 0 ms |