21ic.com website information.
21ic.com domain name is registered by .COM top-level domain registry. See the other sites registred in .COM domain zone.
Following name servers are specified for 21ic.com domain:
- dns2.hichina.com
- dns1.hichina.com
and probably website 21ic.com is hosted by TWITTER - Twitter Inc., US web hosting company. Check the complete list of other most popular websites hosted by TWITTER - Twitter Inc., US hosting company.
According to Alexa traffic rank the highest website 21ic.com position was 47938 (in the world). The lowest Alexa rank position was 51955. Now website 21ic.com ranked in Alexa database as number 51547 (in the world).
Website 21ic.com Desktop speed measurement score (42/100) is better than the results of 16.45% of other sites shows that the page desktop performance can be improved.
21ic.com Mobile usability score (83/100) is better than the results of 26.4% of other sites and means that the page is mobile-friendly.
Mobile speed measurement score of 21ic.com (53/100) is better than the results of 39.51% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
Weekly Rank Report
Date | Rank | Change |
---|---|---|
Nov-19-2024 | 51,547 | 408 |
Nov-18-2024 | 51,955 | -635 |
Nov-17-2024 | 51,320 | -335 |
Nov-16-2024 | 50,985 | -478 |
Nov-15-2024 | 50,507 | 529 |
Nov-14-2024 | 51,036 | -254 |
Nov-13-2024 | 50,782 | 0 |
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21ic.com Rank History
Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.
21ic.com whois
WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.
Domain Name: 21IC.COM
Registry Domain ID: 17040411_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2024-01-04T07:34:20Z
Creation Date: 2000-01-10T02:41:29Z
Registry Expiry Date: 2026-01-10T02:41:29Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: DomainAbuse@service.aliyun.com
Registrar Abuse Contact Phone: +86.95187
Domain Status: ok https://icann.org/epp#ok
Name Server: DNS1.HICHINA.COM
Name Server: DNS2.HICHINA.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-10T21:59:46Z
21ic.com server information
21ic.com desktop page speed rank
Last tested: 2018-02-01
21ic.com Desktop Speed Test Quick Summary
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priority - 10 Eliminate render-blocking JavaScript and CSS in above-the-fold content
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priority - 0 Minify CSS
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21ic.com Desktop Resources
Total Resources | 164 |
Number of Hosts | 15 |
Static Resources | 125 |
JavaScript Resources | 26 |
CSS Resources | 4 |
21ic.com Desktop Resource Breakdown
21ic.com mobile page speed rank
Last tested: 2017-05-30
21ic.com Mobile Speed Test Quick Summary
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Compressing http://m.21ic.com/js/jquery.rotate.js could save 951B (62% reduction).
Compressing http://m.21ic.com/load?rd=0.19426893815398216&page…05-30&order=1%7C2&ba=2 could save 652B (65% reduction).
Compressing http://m.21ic.com/js/common.js could save 588B (52% reduction).
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priority - 26 Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://www.21ic.com/
http://m.21ic.com/
priority - 16 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
Optimize CSS Delivery of the following:
priority - 13 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 127.8KiB (47% reduction).
Minifying http://m.21ic.com/js/pull.js could save 1.4KiB (36% reduction).
Minifying http://m.21ic.com/js/jquery.rotate.js could save 768B (50% reduction).
Minifying http://m.21ic.com/js/js.js could save 757B (34% reduction).
priority - 8 Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
http://m.21ic.com/js/common.js (expiration not specified)
http://m.21ic.com/js/jquery.js (expiration not specified)
http://m.21ic.com/js/jquery.rotate.js (expiration not specified)
http://m.21ic.com/js/js.js (expiration not specified)
http://m.21ic.com/js/navi.js (expiration not specified)
http://m.21ic.com/js/navibar.php (expiration not specified)
http://m.21ic.com/js/pull.js (expiration not specified)
http://1.sunrtb.cn/b/ant_flash.js (60 seconds)
http://pagead2.googlesyndication.com/pagead/js/lidar.js (60 minutes)
https://www.googletagservices.com/dcm/dcmads.js (60 minutes)
priority - 6 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 57.1KiB (43% reduction).
Compressing https://s0.2mdn.net/4444862/360x70_low-jitter-oscillators_CN.jpg could save 20.6KiB (67% reduction).
Compressing http://m.21ic.com/images/icon_top.png could save 1.2KiB (51% reduction).
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priority - 0 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 2.2KiB (11% reduction).
priority - 0 Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 1.7KiB (22% reduction).
21ic.com Mobile Resources
Total Resources | 43 |
Number of Hosts | 13 |
Static Resources | 23 |
JavaScript Resources | 19 |
CSS Resources | 1 |
21ic.com Mobile Resource Breakdown
21ic.com mobile page usability
Last tested: 2017-05-30
21ic.com Mobile Usability Test Quick Summary
priority - 18 Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
<div id="DfaVisibilityI…ier_3222191668" class="GoogleActiveViewClass"></div>
is close to 1 other tap targets.<a href="https://adclic…nector-modules"></a>
is close to 1 other tap targets.<a id="account" href="http://my.21ic.com" class="btn_goucenter"></a>
is close to 2 other tap targets.<a href="javascript:;void(0)" class="btn_refresh"></a>
is close to 1 other tap targets.<a href="/searchform" class="btn_gosearch"></a>
is close to 3 other tap targets.<a id="cat35" href="http://open.21ic.com/m/">公开课</a>
is close to 3 other tap targets.<a href="/menu.htm"></a>
is close to 3 other tap targets.<a href="http://bbs.21i…20516-1-1.html" class="news_title">绕高频变压器求助</a>
and 6 others are close to other tap targets.<a href="http://bbs.21ic.com/" class="news_column">论坛</a>
and 8 others are close to other tap targets.<div id="DfaVisibilityI…ier_1402900042" class="GoogleActiveViewClass"></div>
is close to 2 other tap targets.<a href="https://adclic…er-oscillators"></a>
is close to 2 other tap targets.<a href="http://my.21ic.com/logging.php">登录</a>
and 1 others are close to other tap targets.<a href="http://www.21ic.com" class="last_footerlink">电脑版</a>
is close to 1 other tap targets.21ic.com similar domains
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21ic.com Ping
Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.
21ic.com TRACEROUTE
Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.