codeforces.com website information.
codeforces.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 codeforces.com domain:
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and probably website codeforces.com is hosted by FASTLY - Fastly, US web hosting company. Check the complete list of other most popular websites hosted by FASTLY - Fastly, US hosting company.
According to Alexa traffic rank the highest website codeforces.com position was 24631 (in the world). The lowest Alexa rank position was 26760. Now website codeforces.com ranked in Alexa database as number 24955 (in the world).
Website codeforces.com Desktop speed measurement score (78/100) is better than the results of 65.98% of other sites shows that the page desktop performance can be improved.
codeforces.com Mobile usability score (90/100) is better than the results of 31.63% of other sites and means that the page is mobile-friendly.
Mobile speed measurement score of codeforces.com (43/100) is better than the results of 22.8% 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 |
|---|---|---|
| Sep-21-2024 | 24,955 | -277 |
| Sep-20-2024 | 24,678 | -35 |
| Sep-19-2024 | 24,643 | 221 |
| Sep-18-2024 | 24,864 | -233 |
| Sep-17-2024 | 24,631 | 338 |
| Sep-16-2024 | 24,969 | -65 |
| Sep-15-2024 | 24,904 | -231 |
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codeforces.com Rank History
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codeforces.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: CODEFORCES.COM
Registry Domain ID: 1551886546_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.gandi.net
Registrar URL: http://www.gandi.net
Updated Date: 2024-04-05T00:10:39Z
Creation Date: 2009-04-10T18:26:18Z
Registry Expiry Date: 2025-04-10T18:26:18Z
Registrar: Gandi SAS
Registrar IANA ID: 81
Registrar Abuse Contact Email: abuse@support.gandi.net
Registrar Abuse Contact Phone: +33.170377661
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: FRED.NS.CLOUDFLARE.COM
Name Server: JEAN.NS.CLOUDFLARE.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-10T23:44:19Z
codeforces.com server information
codeforces.com desktop page speed rank
Last tested: 2016-08-10
Desktop Speed
Medium
78/100
codeforces.com Desktop Speed Test Quick Summary
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codeforces.com Desktop Resources
| Total Resources | 96 |
| Number of Hosts | 13 |
| Static Resources | 85 |
| JavaScript Resources | 31 |
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codeforces.com Desktop Resource Breakdown
codeforces.com mobile page speed rank
Last tested: 2019-12-07
Mobile Speed
Bad
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http://sta.codeforces.com/s/15880/markitup/skins/markitup/style.css
http://sta.codeforces.com/s/15880/markitup/sets/markdown/style.css
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priority - 4 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://connect.facebook.net/en_US/sdk.js (20 minutes)
http://www.google-analytics.com/ga.js (2 hours)
http://codeforces.com/scripts/d24681155fcfc7ce302a…/codeforces-options.js (24 hours)
https://assets.codeforces.com/mathjax/MathJax.js?config=TeX-AMS_HTML-full (2 days)
https://assets.codeforces.com/mathjax/config/TeX-AMS_HTML-full.js?V=2.7.5 (2 days)
https://assets.codeforces.com/mathjax/jax/output/H…eX/fontdata.js?V=2.7.5 (2 days)
http://www.google-analytics.com/ga.js (2 hours)
http://codeforces.com/scripts/d24681155fcfc7ce302a…/codeforces-options.js (24 hours)
https://assets.codeforces.com/mathjax/MathJax.js?config=TeX-AMS_HTML-full (2 days)
https://assets.codeforces.com/mathjax/config/TeX-AMS_HTML-full.js?V=2.7.5 (2 days)
https://assets.codeforces.com/mathjax/jax/output/H…eX/fontdata.js?V=2.7.5 (2 days)
priority - 0 Minify CSS
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priority - 0 Enable compression
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codeforces.com Mobile Resources
| Total Resources | 113 |
| Number of Hosts | 11 |
| Static Resources | 102 |
| JavaScript Resources | 38 |
| CSS Resources | 24 |
codeforces.com Mobile Resource Breakdown
codeforces.com mobile page usability
Last tested: 2019-12-07
Mobile Usability
Good
90/100
codeforces.com Mobile Usability Test Quick Summary
priority - 5 Size content to viewport
The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.
The page content is 1,234 CSS pixels wide, but the viewport is only 900 CSS pixels wide. The following elements fall outside the viewport:
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
The element
<td>Participant 3</td> falls outside the viewport.The element
<td>Rating</td> falls outside the viewport.The element
<img src="/predownloaded…a6c92a163f.png"> falls outside the viewport.The element
<br> falls outside the viewport.The element
<a href="/profile/Forestryks" class="rated-user user-orange">Forestryks</a> falls outside the viewport.The element
<td>8110</td> falls outside the viewport.The element
<img src="/predownloaded…a6c92a163f.png"> falls outside the viewport.The element
<br> falls outside the viewport.The element
<a href="/profile/Unsto…leSolveMachine" class="rated-user user-orange">UnstoppableSolveMachine</a> falls outside the viewport.The element
<td>7657</td> falls outside the viewport.The element
<br> falls outside the viewport.The element
<a href="/profile/achi_basadzishvili" class="rated-user user-orange">achi_basadzishvili</a> falls outside the viewport.The element
<td>7271</td> falls outside the viewport.The element
<img src="/predownloaded…49d7bf8239.png"> falls outside the viewport.The element
<br> falls outside the viewport.The element
<a href="/profile/TheWa…eppedOutTheCar" class="rated-user user-orange">TheWayISteppedOutTheCar</a> falls outside the viewport.The element
<td>7189</td> falls outside the viewport.The element
<br> falls outside the viewport.The element
<a href="/profile/antony191" class="rated-user user-orange">antony191</a> falls outside the viewport.The element
<td>7092</td> falls outside the viewport.The element
<img src="/predownloaded…49d7bf8239.png"> falls outside the viewport.The element
<br> falls outside the viewport.The element
<a href="/profile/ismagilov.code" class="rated-user user-orange">ismagilov.code</a> falls outside the viewport.The element
<td>6912</td> falls outside the viewport.The element
<td>Rating</td> falls outside the viewport.The element
<td>8122</td> falls outside the viewport.The element
<td>8032</td> falls outside the viewport.The element
<td>7938</td> falls outside the viewport.The element
<td>7759</td> falls outside the viewport.The element
<td>7607</td> falls outside the viewport.The element
<td>7562</td> falls outside the viewport.The element
<td>7438</td> falls outside the viewport.The element
<td>7369</td> falls outside the viewport.The element
<td>7075</td> falls outside the viewport.priority - 4 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="?locale=en"></a> and 2 others are close to other tap targets.The tap target
<a href="/profile/chemthan" class="rated-user user-red">chemthan</a> and 4 others are close to other tap targets.The tap target
<a href="#" class="attach-blogEnt…o-contest-link"></a> and 9 others are close to other tap targets.The tap target
<a href="https://codefo…ests/1264,1265">Codeforces Round #604</a> and 7 others are close to other tap targets.The tap target
<a href="https://www.ti…5&sec=0&p1=166" class="contest-time">Thursday, Dece…at 06:35UTC-8</a> and 2 others are close to other tap targets.The tap target
<a href="/profile/MikeMirzayanov" class="rated-user user-admin">MikeMirzayanov</a> is close to 1 other tap targets.The tap target
<a href="/profile/isaf27" class="rated-user user-red">isaf27</a> and 13 others are close to other tap targets.The tap target
<a href="/profile/Imperfect" class="rated-user user-blue">Imperfect</a> and 4 others are close to other tap targets.The tap target
<a href="/profile/Thuleanx" class="rated-user user-black">Thuleanx</a> and 1 others are close to other tap targets.The tap target
<a href="/blog/entry/71916">Read more »</a> and 3 others are close to other tap targets.The tap target
<a href="/contest/1264" class="notice">Codeforces Round #604 (Div. 1)</a> and 12 others are close to other tap targets.The tap target
<a href="/profile/kuviman" class="rated-user user-orange">kuviman</a> and 7 others are close to other tap targets.The tap target
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<a href="/page/1">1</a> is close to 1 other tap targets.The tap target
<a href="/page/2">2</a> and 2 others are close to other tap targets.The tap target
<form id="u_0_1">Like</form> is close to 1 other tap targets.The tap target
<form id="u_0_1">Like</form> and 1 others are close to other tap targets.The tap target
<button id="u_0_2" type="submit" class="inlineBlock _2tga _89n_ _8j9v">Like</button> is close to 1 other tap targets.The tap target
<a href="/profile/tourist" class="rated-user user-legendary">tourist</a> and 16 others are close to other tap targets.The tap target
<a href="/ratings/organizations">Organizations</a> is close to 1 other tap targets.The tap target
<a href="/profile/antontrygubO_o" class="rated-user user-orange">antontrygubO_o</a> and 3 others are close to other tap targets.codeforces.com similar domains
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codeforces.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.
codeforces.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.