POJ.ORG Welcome To PKU JudgeOnline


poj.org website information.

poj.org domain name is registered by .ORG top-level domain registry. See the other sites registred in .ORG domain zone.

Following name servers are specified for poj.org domain:

  • f1g1ns1.dnspod.net
  • f1g1ns2.dnspod.net

and probably website poj.org is hosted by AMAZON-02 - Amazon.com, Inc., US web hosting company. Check the complete list of other most popular websites hosted by AMAZON-02 - Amazon.com, Inc., US hosting company.

According to Alexa traffic rank the highest website poj.org position was 13683 (in the world). The lowest Alexa rank position was 993103. Now website poj.org ranked in Alexa database as number 247549 (in the world).

Website poj.org Desktop speed measurement score (92/100) is better than the results of 90.97% of other sites and shows that the page is performing great on desktop computers.

poj.org Mobile usability score (65/100) is better than the results of 13.11% of other sites and shows that the page mobile usability is poor and can be improved.

Mobile speed measurement score of poj.org (82/100) is better than the results of 89.15% of other sites and shows that the landing page performance on mobile devices is excellent.

Weekly Rank Report

DateRankChange
Sep-21-2021 247,549N/A
Sep-20-2021 N/AN/A
Sep-19-2021 N/AN/A
Sep-18-2021 N/AN/A
Sep-17-2021 N/AN/A
Sep-16-2021 N/AN/A
Sep-15-2021 N/AN/A

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poj.org 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.



poj.org 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: POJ.ORG
Registry Domain ID: D104932638-LROR
Registrar WHOIS Server: whois.22.cn
Registrar URL: https://www.22.cn
Updated Date: 2019-05-26T00:21:26Z
Creation Date: 2004-09-25T18:52:08Z
Registry Expiry Date: 2024-09-25T18:52:08Z
Registrar Registration Expiration Date:
Registrar: 22net, Inc.
Registrar IANA ID: 1555
Registrar Abuse Contact Email: abuse@22.cn
Registrar Abuse Contact Phone: +86.57188276020
Reseller:
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registrant Organization: shanghaituchongwangluokejiyouxiangongsi
Registrant State/Province: BEIJING
Registrant Country: CN
Name Server: F1G1NS1.DNSPOD.NET
Name Server: F1G1NS2.DNSPOD.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form https://www.icann.org/wicf/)
>>> Last update of WHOIS database: 2021-05-14T10:43:24Z

poj.org server information

Servers Location

IP Address
168.235.95.213
Region
California
City
Los Angeles

poj.org desktop page speed rank

Last tested: 2018-06-27


Desktop Speed Good
92/100

poj.org Desktop Speed Test Quick Summary


priority - 4 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:

http://poj.org/poj.js

Optimize CSS Delivery of the following:

http://poj.org/poj.css

priority - 1 Reduce server response time

In our test, your server responded in 0.32 seconds. There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.

priority - 1 Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 11.2KiB (71% reduction).

Compressing http://poj.org/poj.js could save 9.3KiB (71% reduction).
Compressing http://poj.org/poj.css could save 1.9KiB (70% reduction).

priority - 0 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.google-analytics.com/ga.js (2 hours)

priority - 0 Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 1.4KiB (14% reduction).

Compressing http://poj.org/images/fengmian_2.jpg could save 1KiB (12% reduction).
Compressing http://poj.org/images/developer.gif could save 222B (19% reduction).
Compressing http://poj.org/images/bar.jpg could save 130B (23% reduction).

poj.org Desktop Resources

Total Resources15
Number of Hosts2
Static Resources13
JavaScript Resources2
CSS Resources1

poj.org Desktop Resource Breakdown

poj.org mobile page speed rank

Last tested: 2018-06-27


Mobile Speed Medium
82/100

poj.org Mobile Speed Test Quick Summary


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:

http://poj.org/poj.js

Optimize CSS Delivery of the following:

http://poj.org/poj.css

priority - 2 Reduce server response time

In our test, your server responded in 0.32 seconds. There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.

priority - 1 Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 11.2KiB (71% reduction).

Compressing http://poj.org/poj.js could save 9.3KiB (71% reduction).
Compressing http://poj.org/poj.css could save 1.9KiB (70% reduction).

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://www.google-analytics.com/ga.js (2 hours)

priority - 0 Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 1.4KiB (14% reduction).

Compressing http://poj.org/images/fengmian_2.jpg could save 1KiB (12% reduction).
Compressing http://poj.org/images/developer.gif could save 222B (19% reduction).
Compressing http://poj.org/images/bar.jpg could save 130B (23% reduction).

poj.org Mobile Resources

Total Resources15
Number of Hosts2
Static Resources13
JavaScript Resources2
CSS Resources1

poj.org Mobile Resource Breakdown

poj.org mobile page usability

Last tested: 2018-06-27


Mobile Usability Medium
65/100

poj.org Mobile Usability Test Quick Summary


priority - 31 Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

Online Contests and 4 others render only 6 pixels tall (16 CSS pixels).

Contact Administrator and 13 others render only 6 pixels tall (16 CSS pixels).

Current Contest renders only 6 pixels tall (16 CSS pixels).

Award Contest renders only 6 pixels tall (16 CSS pixels).

Password: and 1 others render only 6 pixels tall (16 CSS pixels).

Register renders only 6 pixels tall (16 CSS pixels).

Problem Set is…every problem. and 6 others render only 6 pixels tall (16 CSS pixels).

Frequently Asked Questions and 2 others render only 6 pixels tall (16 CSS pixels).

If you want to…contest, just and 1 others render only 6 pixels tall (16 CSS pixels).

Peking Univers…Team Home Page and 1 others render only 6 pixels tall (16 CSS pixels).

程序设计导引及在线实践 renders only 6 pixels tall (16 CSS pixels).

Home Page and 2 others render only 6 pixels tall (16 CSS pixels).

All Rights Res…ngcheng,Xie Di and 1 others render only 6 pixels tall (16 CSS pixels).

priority - 15 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.

The tap target <a href="bbs">Web Board</a> and 11 others are close to other tap targets.

The tap target <input type="text" name="pid"> and 1 others are close to other tap targets.

The tap target <input type="Submit" name="pb1"> and 2 others are close to other tap targets.

The tap target <a href="challenge.html">Award Contest</a> is close to 2 other tap targets.

The tap target <input type="text" name="user_id1"> and 1 others are close to other tap targets.

The tap target <a href="register">Register</a> is close to 1 other tap targets.

The tap target <a href="faq.htm">Frequently Asked Questions</a> and 1 others are close to other tap targets.

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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poj.org 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.


poj.org 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.