21ic.com
🖥 Status: up
🕒 Response Time: 3.475 sec
⬅️ Response Code: 200
From February 9, 2021, through the past 2 012 days, the availability of 21ic.com has been checked 33 times. Out of all tests attempted, 21ic.com was working 32 times, with the last instance on June 7, 2026, replying with a 200 status code. The checks conducted as of August 14, 2026, did not find any downtime issues related to 21ic.com. The most current error code among the 1 responses that had errors was code 403, which was detected on July 29, 2025. At 3.475 seconds, 21ic.com's response time on June 7, 2026, differed from the 4.360 seconds average.
33
Last Updated: June 7, 2026
21ic overview
- Domain
- 21ic.com
- Title
- 21IC电子网 - 电子工程师的优选网站
- Description
- 21IC电子网，电子工程师的优选网站(嵌入式,单片机,DSP,EDA,测试测量,元器件,医疗电子,智能电网)
- C Site Status Rank
- 11 732
- Search Wikipedia
- 21ic.com
- Alternatives
- alternatives to 21ic.com
- Recently checked
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Last Updated: June 1, 2026
Status: up
Response Time: 0.850 sec
Response Code: 200
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Last Updated: June 24, 2026
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Response Time: 0.001 sec
Response Code: not set
21ic.com
status check request map as of August 14, 2026
Country report for 21ic.com as of August 14, 2026
| United States | 100.00% | ||||||||
| 19:33 | |||||||||
| Site | Total Checks | Last Modified |
|---|---|---|
| 28 | June 26, 2022 | |
| 42 | January 26, 2021 | |
| 33 | February 9, 2021 | |
| 21 | November 17, 2024 | |
| 32 | July 26, 2021 |
Reactor.cc | 21ic.com | ||||
|---|---|---|---|---|---|
General SEO Report
| Page Title | Page Title tips for 21ic.com: Consider how the title complements other on-page SEO elements like meta descriptions and headings; a well-crafted title provides the foundational information needed to create a compelling and complete user experience upon landing on the page. |
|---|---|
| 21IC电子网 - 电子工程师的优选网站 Length: 46 characters | |
| Meta Description | Meta Description tips for 21ic.com: Create unique meta tags for each page, concise (max 155 characters), that accurately summarize the page's content and naturally integrate target keywords, significantly improving your chances of appearing relevant and clickable when users search for related terms. |
| 21IC电子网，电子工程师的优选网站(嵌入式,单片机,DSP,EDA,测试测量,元器件,医疗电子,智能电网) Length: 124 characters | |
| Meta Keywords | Meta Keywords tips for 21ic.com: Long-tail keyword targeting within your content and utilizing social proof, such as testimonials, are more effective strategies for drawing organic traffic than meta keywords optimization. |
| no meta keywords data for 21ic.com 2026-08-14T19:49:51+00:00 | |
| Page Content | Page Content tips for 21ic.com: Design page content to answer user questions thoroughly by leveraging research-backed insights and offering step-by-step guides that deliver significant value, encouraging longer site visits and reducing bounce rates. |
| Web Page Content Length: 142856 characters | |
| H1 Heading | H1 Heading tips for 21ic.com: Consider how the H1 header contributes to your overall page content strategy; it's not just a title but a key component in communicating your message effectively and meeting user intent behind the search queries that bring traffic to your webpage. |
| no h1 heading data for 21ic.com 2026-08-14T19:49:51+00:00 | |
| H2 Headings | H2 Headings tips for 21ic.com: H2 headers play a significant role in content ranking as semantic HTML elements, helping search engines categorize page sections and understand the depth of information provided on a given topic. |
| 电子技术子站 电子技术专栏 电子技术专访 电子技术论坛 电子技术公开课 电子技术资料下载 电子技术直播短视频 电子项目外包交易平台 电子工程师问答网站 21ic钱包 Count: 10 heading tag | |
| H3 Headings | H3 Headings tips for 21ic.com: Ensure your H3 headings are grammatically correct, varied in structure (some questions, some statements), and provide clear value or intrigue to draw users in. |
| 市占率达34.8%！三星第三季度DRAM销量重夺市场第一 雷军发长文庆祝小米汽车第50万辆下线 承诺做好三件事 吉利资本领投！星动纪元斩获近10亿A+轮融资 英伟达耀眼业绩打飞“AI泡沫” 黄仁勋：云端GPU卖光了 iPhone Fold已正式定型：全球首发无折痕屏幕技术 安谋科技Arm China发布全新“周易” X3 NPU：算力高达80 FP8 TFLOPS iPhone 17系列首发自研N1芯片：Wi-Fi速度超越上代iPhone 16 Gemini 3 Pro登顶 谷歌涨超5% 市值再创历史新高 理想内部承认低估小米！将全面转向“极致单品”逻辑 通信技术 显示光电 单片机 测试测量 智能硬件 汽车电子 消费电子 工业控制 医疗电子 电路图 模拟 专访 电源 芯闻号 嵌入式 技术学院 厂商动态 新基建 中国芯 and 34 more... Count: 29 heading tag | |
| H4 Headings | H4 Headings tips for 21ic.com: Consistently using h4 headings for the same type of content or information (e.g., step-by-step instructions or key takeaways) helps reinforce patterns for users, making complex information easier to digest and improving the overall clarity of your page. |
| 热门活动 厂 商 专 区 互利共赢 21ic项目交易平台诚意相邀 Count: 3 heading tag | |
| H5-H6 Headings | H5-H6 Headings tips for 21ic.com: Avoid creating heading clusters with consecutive use of H5 or H6 tags without descending to a deeper level or using an ordered range for distinct section breaks in your SEO strategy. |
| 原创说明 专 栏 推 荐 热 门 分 类 项 目 领 域 问 答 专 家 钱 包 应 用 友情链接 Count: 7 heading tag | |
| Image ALT Attributes | Image ALT Attributes tips for 21ic.com: The length and quality of your ALT attribute description directly impact both user accessibility and search engine understanding, making it a vital on-page SEO and accessibility factor for web content. |
| https://img.21ic.com/logo.jpg https://misc.21ic.com/homepage2016/images/loading210_120.gif https://bbs.21ic.com/qstatic/image/index/img_logo_1152.jpg https://www.21ic.com/images/homenew/bbs_whxy_logo.jpg https://www.21ic.com/images/homenew/img_logo_1114.jpg https://misc.21ic.com/homepage2016/images/bbs_hdsc_logo.jpg https://www.21ic.com/images/bbs16_geehy_logo.jpg https://www.21ic.com/images/homenew/bbs_nationstech_logo.jpg https://misc.21ic.com/homepage2016/images/bbs_ytl_logo.jpg https://misc.21ic.com/homepage2016/images/bbs_wch_logo.jpg https://misc.21ic.com/homepage2016/images/mini_logo9.jpg https://misc.21ic.com/homepage2016/images/bbs07_st_logo.jpg https://img.21ic.com/2015nav/images/bbs10_zh_logo.jpg and 20 more... Count: 14 images with ALT attributes | |
| Robots.txt | Robots.txt tips for 21ic.com: Test your robots.txt configuration thoroughly using tools like Google Search Console's robots.txt Tester before deploying changes to avoid critical errors. |
| file robots.txt was found on the website | |
| XML Sitemap | XML Sitemap tips for 21ic.com: The inclusion of an XML sitemap in Search Console provides analytics and control, allowing you to monitor which URLs are being crawled and indexed, identify potential crawl errors or issues, and manage the prioritization of specific pages for optimal resource utilization by search engine bots. |
| no xml sitemap data for 21ic.com 2026-08-14T19:49:51+00:00 | |
| Page Size | Page Size tips for 21ic.com: Compress all CSS, JavaScript, and HTML using gzip or Brotli compression on your web server configuration to drastically reduce the transferred document size and improve loading times for all users. |
| page size: 140 kb | |
| Response Time | Response Time tips for 21ic.com: Accelerate your website's performance by strategically implementing server-side rendering (SSR) or static site generation (SSG) methods, which can drastically reduce initial response times for dynamic content. |
| response time: 4.360 sec | |
| Minify CSS | Minify CSS tips for 21ic.com: Automatically minify all CSS assets on your website through build tools or server configurations, ensuring whitespace and unused code are removed to achieve faster load times, meet Core Web Vitals standards, and provide a smoother user experience for better engagement. |
| Minified: /css/2017global2_min.css?v=1737095276 /css/homepage/index_nav2_min.css?v=20211019 Unminified: /css/homepage/2017home1_min.css?v=1728352603 /css/homepage/2016microsite1.css?v=1759214074 included in the page | |
| Minify JavaScript | Minify JavaScript tips for 21ic.com: Enhance your web page speed scores and SEO by integrating server-side JavaScript minification, ensuring that all user-accessed JS code has been optimized for size and execution efficiency from the source. |
| Minified: /js/homepage/uaredirect.js?v=1634868979 /js/homepage/home.min.js?v=1634868978 /js/homepage/jquery-1.11.0.min.js?v=1634868979 /js/homepage/bigpicroll.min.js?v=1634868978 /js/homepage/jquery-migrate-1.2.1.min.js?v=1634868979 /js/2015nav/slide-nav.min.js?v=1634868978 /js/2015nav/lrtk.min.js?v=1634868978 /js/homepage/jquery.lazyload.min.js?v=1634868979 /js/layer/layer.js?v=1619258749 Unminified: /js/homepage/function-utf8.js?v=1669876976 /js/homepage/slides.min.jquery.js?v=1634868979 /js/homepage/cs.js /js/nav/nav.js /js/homepage/jszzo0.js /js/homepage/cs.js detected during site scan | |
| Structured Data | Structured Data tips for 21ic.com: Enhance your page's potential to be featured prominently by implementing specific schema types relevant to your content; detailed schema helps Google recognize your content for specialized search queries, leading to improved rankings and attracting targeted visitors actively seeking your offerings. |
| no structured data data for 21ic.com 2026-08-14T19:49:51+00:00 | |
| CDN Usage | CDN Usage tips for 21ic.com: Cache frequently accessed static content aggressively on your Content Delivery Network (CDN) to minimize origin fetches, reduce server strain, and ensure quick load times. |
| no cdn usage data for 21ic.com 2026-08-14T19:49:51+00:00 | |
| SSL certificates | SSL certificates tips for 21ic.com: Securing your website with a robust and up-to-date SSL certificate is paramount for maintaining user trust and confidence; it provides clear visual indicators like the padlock icon and 'Secure' label within the browser, significantly reducing bounce rates and encouraging longer session durations. |
| SSL is enabled on the website |
Estimated Traffic
| Minimum Daily Unique Visitors: | 104 850 |
| Minimum Daily Visits: | 122 535 |
| Minimum Daily Page Views: | 210 963 |
| Minimum Monthly Unique Visitors: | 3 145 500 |
| Minimum Monthly Visits: | 3 676 050 |
| Minimum Monthly Page Views: | 6 328 890 |
| Minimum Yearly Unique Visitors: | 37 746 000 |
| Minimum Yearly Visits: | 44 112 600 |
| Minimum Yearly Page Views: | 75 946 680 |
| Maximum Daily Unique Visitors: | 132 641 |
| Maximum Daily Visits: | 141 484 |
| Maximum Daily Page Views: | 238 754 |
| Maximum Monthly Unique Visitors: | 3 979 230 |
| Maximum Monthly Visits: | 4 244 520 |
| Maximum Monthly Page Views: | 7 162 620 |
| Maximum Yearly Unique Visitors: | 47 750 760 |
| Maximum Yearly Visits: | 50 934 240 |
| Maximum Yearly Page Views: | 85 951 440 |
Estimated Valuation
| Daily Revenue: | US$ 152 - 341 |
| Monthly Revenue: | US$ 4 560 - 10 230 |
| Yearly Revenue: | US$ 54 720 - 122 760 |
Estimated Worth
| Minimum: | US$ 82 080 |
| Maximum: | US$ 368 280 |
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