Analysis performed on Aug 20, 2025
This is a comprehensive technical analysis of yudongzhang.com performed on August 20, 2025. The analysis includes DNS configuration, server information, WHOIS data, and HTTP response details.
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🤖 AI Analysis Summary
Purpose and Target: The website is titled "Yudong Zhang – Homepage" and explicitly states it is the homepage of a PhD candidate at Tsinghua University. No further specific purpose or target audience is clearly described.
Location: The site is hosted on GitHub.com servers, with DNS managed by DNS3.HICHINA.COM and DNS4.HICHINA.COM.
Technology: Confirmed technologies include Angular framework, Font Awesome icons, Google Analytics, Google Tag Manager, and Cloudflare services. The server is GitHub.com.
SEO: There are no meta keywords or meta description tags present. The site does include basic Open Graph meta tags for locale (en), site name (Yudong Zhang), title, URL, and description ("PhD candidate at Tsinghua University"). The site lacks a proper meta description for SEO improvement.
Security: HTTPS is enabled for secure connections; however, SSL certificate details are not implemented or valid according to the technical data. No other security issues are visible.
Content Status: The site contains 1,239 words of content, which is sufficient for analysis. There is no indication that the site is under construction or has insufficient content.
Accessibility: The site has good accessibility features such as ARIA attributes, proper heading structure, and form input labels. Alt text for images is insufficient, covering only about 11% of images. Skip navigation links are not detected.
Summary: The site is an academic homepage hosted on GitHub, built with Angular and enhanced with Font Awesome and Google services. It uses HTTPS but has an invalid or missing SSL certificate. It includes substantial content describing the individual but lacks strong SEO meta tags and has partial accessibility support.
In short: Academic homepage for PhD candidate.
🌐 Domain Information
The domain yudongzhang.com was registered on July 19, 2025, indicating it is currently in its initial registration phase. The domain is active and set to expire on July 19, 2035. It is registered through Alibaba Cloud Computing Ltd. d/b/a HiChina, with nameservers DNS3.HICHINA.COM and DNS4.HICHINA.COM configured for its DNS management.
WHOIS Registration Details
| Registrar | Alibaba Cloud Computing Ltd. d/b/a HiChina (www.net.cn) |
| Registration Date | 2025-07-19 |
| Expiration Date | 2035-07-19 |
| Name Servers | DNS3.HICHINA.COM DNS4.HICHINA.COM |
⚙️ Technical Data
The DNS configuration for yudongzhang.com utilizes CNAME records pointing to btzyd.github.io, with multiple A and AAAA records for IPv4 and IPv6 addresses, respectively. Security implementation shows HTTPS is enabled, but the SSL certificate is invalid and lacks proper configuration. The technology stack includes Angular, Font Awesome, Google Analytics, Google Tag Manager, and Cloudflare, hosted on GitHub.com.
DNS Records
A Records
| Host | IP Address | TTL |
|---|---|---|
| btzyd.github.io | 185.199.110.153 | 599 |
SSL & Security
| HTTPS Status | ✅ Enabled |
| HSTS | ⚠️ Not Enabled |
| Security Summary | The website uses HTTPS for secure connections. |
Technologies
| Server Software | GitHub.com |
| Detected Technologies | Angular, Font Awesome, Google Analytics, Google Tag Manager, Cloudflare |
| Technology Summary | The website uses technologies including Angular, Font Awesome, Google Analytics, Google Tag Manager, Cloudflare. Server: GitHub.com. |
Content Information
| Content Size | 1239 words |
| Content Analysis | The site contains 1239 words of content. It lacks proper meta tags for SEO. |
HTTP Status Information
| Redirect Chain | |
| Response Time | 0 ms |