infosec.pku.edu.cn
🖥 Status: up
🕒 Response Time: 2.074 sec
⬅️ Response Code: 200
Over the past 1 724 days beginning April 2, 2021, there have been 3 checks done on infosec.pku.edu.cn's availability. Among the 3 uptime instances out of the total number of checks, infosec.pku.edu.cn was functioning with a 200 status code response on April 2, 2021. There were no interruptions in service for infosec.pku.edu.cn throughout all evaluations done as of December 21, 2025. The received replies confirm that, as of December 21, 2025, no response had an error status. Data reveals a contrast on April 2, 2021, with infosec.pku.edu.cn responding in 2.074 seconds against its 1.120 seconds average.
3
Last Updated: April 2, 2021
derevo-s.ru
Last Updated: December 11, 2025
Status: error
Response Time: 0.325 sec
Response Code: 403
| United States | 100.00% | ||||||||
| 09:18 | 09:18 | 09:34 | |||||||
Different Extensions
Search Results
| Site | Total Checks | Last Modified |
|---|---|---|
| 6 | June 15, 2021 | |
| 4 | May 1, 2024 | |
| 3 | April 2, 2021 | |
| 2 | January 17, 2025 | |
| 1 | December 21, 2025 |
Derevo-s.ru | Infosec.pku.edu.cn | ||||
|---|---|---|---|---|---|
| Page Title | Professional SEO recommend title tags include relevant keywords early; integrating descriptive text about the page's purpose after the primary keyword is crucial for comprehensive optimization impact analysis. |
|---|---|
| 北京大学信息安全实验室 Length: 33 characters | |
| Meta Description | Search engines display meta descriptions in their organic results, using them as a primary signal of page relevance and content quality, so optimizing this text is essential for better search rankings and user understanding. |
| 北京大学信息安全实验室 Length: 33 characters | |
| Meta Keywords | Relying on meta keywords for SEO is outdated strategy; instead, focus on naturally incorporating target terms into your content, building authoritative backlinks, and ensuring a good user experience. |
| no meta keywords data for infosec.pku.edu.cn 2025-12-21T11:07:37+00:00 | |
| Page Content | Utilize schema markup strategically within your page content to help search engines understand the context and structure of your information, potentially leading to rich search results that can drive more targeted traffic to your website pages. |
| Web Page Content Length: 8576 characters | |
| H1 Heading | Consistency in using the H1 element for main headings across your entire website structure helps maintain a logical document outline and improves navigation clarity. |
| no h1 heading data for infosec.pku.edu.cn 2025-12-21T11:07:37+00:00 | |
| H2 Headings | H2 headings are crucial for mobile SEO and responsive design; they help structure the viewport, ensuring content remains accessible and user-friendly on smaller screens. |
| 新闻活动 学术交流 开设课程 Count: 3 heading tag | |
| H3 Headings | Ensure your H3 tags accurately reflect the main sub-topic discussed in the paragraph below them; misleading or generic H3s (like "Point #1") can confuse users and negatively impact SEO. |
| 山西省举办全省区块链专题讲座，陈钟教授作区块链创新与应用主题授课 常用服务 友情链接 联系我们 Count: 4 heading tag | |
| H4 Headings | While not as critical as H1, H2, or H3 tags for major SEO ranking signals, H4 headers remain vital for internal linking strategies and content organization, signaling a logical progression of ideas within an article or guide to both users and crawlers. |
| no h4 headings data for infosec.pku.edu.cn 2025-12-21T11:07:37+00:00 | |
| H5-H6 Headings | Your carefully crafted H5 and H6 headers are wasted if the content within the sub-sections is superficial; ensure every sub-point delivers substantial value to the user's query. |
| no h5-h6 headings data for infosec.pku.edu.cn 2025-12-21T11:07:37+00:00 | |
| Image ALT Attributes | When crafting ALT text for decorative images that don't carry essential information, use an empty alt="" attribute or a minimal phrase like "decorative pattern" to focus purely on visual design elements. |
| no image alt attributes data for infosec.pku.edu.cn 2025-12-21T11:07:37+00:00 | |
| Robots.txt | Carefully consider the implications of blocking paths via robots.txt, as overly restrictive rules can inadvertently prevent search engines from accessing valuable resources and understanding your site's architecture. |
| no robots.txt data for infosec.pku.edu.cn 2025-12-21T11:07:37+00:00 | |
| XML Sitemap | XML sitemaps provide search engines with valuable metadata about each page, such as the last modification date, preferred language (if multilingual), geographical target, and the estimated frequency of content updates. |
| no xml sitemap data for infosec.pku.edu.cn 2025-12-21T11:07:37+00:00 | |
| Page Size | Swift technical page speed analysis is essential for understanding the current page size and its direct correlation to organic search visibility and user acquisition metrics. |
| page size: 8 kb | |
| Response Time | Error handling on the server side should be optimized to provide clear, non-intrusive responses to prevent resource wastage and maintain efficient server response performance. |
| response time: 1.120 sec | |
| Minify CSS | Implement server-side CSS compression or use client-side minification libraries to automatically strip unnecessary characters and whitespace from CSS assets, significantly speeding up website load times and improving SEO factors. |
| Minified: css/main.css included in the page | |
| Minify JavaScript | Compressing your website's JavaScript code through minification by stripping unnecessary whitespace, comments, and formatting drastically reduces file transfer times, enhancing user experience and contributing positively to search engine ranking factors. |
| Minified: /publish/gPublic/all.js js/jquery.min.js js/jquery.dropotron.min.js js/skel.min.js js/util.js js/main.js g_style/g_index.js g_style/43rjgcyjsxxaqsys2191_g_channel_index.js /cms/web/writeLog.jsp?siteID=43rjgcyjsxxaqsys43 detected during site scan | |
| Structured Data | Integrating structured data via Schema.org helps search engines accurately categorize and display your information, which can result in valuable "rich snippets" like star ratings, prices, and event dates directly in search result snippets. |
| no structured data data for infosec.pku.edu.cn 2025-12-21T11:07:37+00:00 | |
| CDN Usage | Boost your website's Core Web Vitals scores (Largest Contentful Paint, First Input Delay, Cumulative Layout Shift) significantly by leveraging a CDN to rapidly deliver high-priority resources and maintain consistent performance across different user connections. |
| no cdn usage data for infosec.pku.edu.cn 2025-12-21T11:07:37+00:00 | |
| SSL certificates | Utilizing an Extended Validation (EV) SSL certificate offers the highest level of website trust indicators in browsers, featuring your verified business name, providing enhanced credibility for e-commerce sites, membership platforms, or any online service built on user trust and secure transactions. |
| SSL is enabled on the website |