W3SCHOOL.COM.CN w3school 在线教程


w3school.com.cn website information.

w3school.com.cn domain name is registered by .CN top-level domain registry. See the other sites registred in .CN domain zone.

Following name servers are specified for w3school.com.cn domain:

  • dns8.hichina.com
  • dns7.hichina.com

and probably website w3school.com.cn 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 w3school.com.cn position was 348 (in the world). The lowest Alexa rank position was 6108. Now website w3school.com.cn ranked in Alexa database as number 420 (in the world).

Website w3school.com.cn Desktop speed measurement score (88/100) is better than the results of 85.98% of other sites and shows that the page is performing great on desktop computers.

w3school.com.cn Mobile usability score (89/100) is better than the results of 31.01% of other sites and means that the page is mobile-friendly.

Mobile speed measurement score of w3school.com.cn (99/100) is better than the results of 96.95% of other sites and shows that the landing page performance on mobile devices is excellent.

Weekly Rank Report

DateRankChange
Feb-28-2021 42077
Feb-27-2021 497148
Feb-26-2021 645-178
Feb-25-2021 467-1
Feb-24-2021 4665
Feb-23-2021 471142
Feb-22-2021 613-93

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w3school.com.cn 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.


w3school.com.cn 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.


w3school.com.cn server information

Servers Location

IP Address
120.55.40.41
Country
China
Region
Zhejiang
City
Hangzhou

w3school.com.cn desktop page speed rank

Last tested: 2018-09-12


Desktop Speed Good
88/100

w3school.com.cn Desktop Speed Test Quick Summary


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://www.w3school.com.cn/c5_20171220.css (expiration not specified)
http://www.w3school.com.cn/ui2017/alert.png (expiration not specified)
http://www.w3school.com.cn/ui2017/bg.png (expiration not specified)
http://www.w3school.com.cn/ui2017/footer.png (expiration not specified)
http://www.w3school.com.cn/ui2017/icon10.png (expiration not specified)
http://www.w3school.com.cn/ui2017/icon2.png (expiration not specified)
http://www.w3school.com.cn/ui2017/icon3.png (expiration not specified)
http://www.w3school.com.cn/ui2017/icon4.png (expiration not specified)
http://www.w3school.com.cn/ui2017/icon5.png (expiration not specified)
http://www.w3school.com.cn/ui2017/icon6.png (expiration not specified)
http://www.w3school.com.cn/ui2017/icon7.png (expiration not specified)
http://www.w3school.com.cn/ui2017/icon8.png (expiration not specified)
http://www.w3school.com.cn/ui2017/icon9.png (expiration not specified)
http://www.w3school.com.cn/ui2017/wrapper.png (expiration not specified)
https://www.googletagmanager.com/gtag/js?id=UA-878633-1 (15 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

priority - 2 Optimize images

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Compressing http://www.w3school.com.cn/ui2017/bg.png could save 12KiB (18% reduction).
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Compressing http://www.w3school.com.cn/ui2017/alert.png could save 133B (29% reduction).
Compressing http://www.w3school.com.cn/ui2017/footer.png could save 117B (59% reduction).

priority - 2 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 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.

Optimize CSS Delivery of the following:

http://www.w3school.com.cn/c5_20171220.css

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 693B (15% reduction).

Minifying http://www.w3school.com.cn/c5_20171220.css could save 693B (15% reduction) after compression.

w3school.com.cn Desktop Resources

Total Resources20
Number of Hosts5
Static Resources16
JavaScript Resources2
CSS Resources1

w3school.com.cn Desktop Resource Breakdown

w3school.com.cn mobile page speed rank

Last tested: 2018-02-08


Mobile Speed Good
99/100

w3school.com.cn Mobile Speed Test Quick Summary


priority - 1 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://w3school.com.cn/iisstart.png (expiration not specified)

w3school.com.cn Mobile Resources

Total Resources2
Number of Hosts1
Static Resources1

w3school.com.cn Mobile Resource Breakdown

w3school.com.cn mobile page usability

Last tested: 2018-02-08


Mobile Usability Good
89/100

w3school.com.cn Mobile Usability Test Quick Summary


priority - 10 Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

Configure a viewport for this page.

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w3school.com.cn 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.


w3school.com.cn 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.