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cern.ch website information.

cern.ch domain name is registered by .CH top-level domain registry. See the other sites registred in .CH domain zone.

Following name servers are specified for cern.ch domain:

  • ext-dns-1.cern.ch
  • scsnms.switch.ch
  • ext-dns-2.cern.ch

and probably website cern.ch 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 cern.ch position was 1017 (in the world). The lowest Alexa rank position was 1323. Now website cern.ch ranked in Alexa database as number 1104 (in the world).

Website cern.ch Desktop speed measurement score (69/100) is better than the results of 49.24% of other sites shows that the page desktop performance can be improved.

cern.ch Mobile usability score (93/100) is better than the results of 34.93% of other sites and means that the page is mobile-friendly.

Mobile speed measurement score of cern.ch (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

DateRankChange
Nov-06-2024 1,1047
Nov-05-2024 1,111-2
Nov-04-2024 1,109-26
Nov-03-2024 1,08319
Nov-02-2024 1,1020
Nov-01-2024 1,1024
Oct-31-2024 1,106-13

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cern.ch 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.


cern.ch 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.

Requests of this client are not permitted. Please use https://www.nic.ch/whois/ for queries.

cern.ch server information

Servers Location

IP Address
188.184.77.250
Country
Switzerland
Region
Geneve
City
Geneva

cern.ch desktop page speed rank

Last tested: 2017-05-21

Desktop Speed Medium
69/100

cern.ch Desktop Speed Test Quick Summary


priority - 22 Optimize images

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priority - 9 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:

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http://home.cern/sites/home.web.cern.ch/files/css/…SyX66A5f4ymmZ7DCUA.css (expiration not specified)
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http://home.cern/sites/home.web.cern.ch/files/js/j…63f7lPxSnpvsLMj9eOI.js (expiration not specified)
http://home.cern/homepage-event-json?&callback=? (60 seconds)
http://home.cern/homepage-event-json?&callback=jQu…287124&_=1495395287126 (60 seconds)
http://www.google-analytics.com/analytics.js (2 hours)

priority - 7 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://cern.ch/
http://home.web.cern.ch/
http://home.cern/

priority - 6 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 5 blocking script resources and 6 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:

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Optimize CSS Delivery of the following:

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http://home.cern/sites/home.web.cern.ch/files/css/…N5GHF30iYt81HvQJc8.css
http://framework.web.cern.ch/framework/2.0/fonts/PTSansWeb/PTSansWeb.css
http://home.cern/sites/home.web.cern.ch/files/css/…xx03lrdBXyecNOo6Fo.css
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priority - 1 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 7.3KiB (17% reduction).

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priority - 0 Enable compression

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cern.ch Desktop Resources

Total Resources28
Number of Hosts6
Static Resources22
JavaScript Resources9
CSS Resources7

cern.ch Desktop Resource Breakdown

cern.ch mobile page speed rank

Last tested: 2017-05-21

Mobile Speed Bad
53/100

cern.ch Mobile Speed Test Quick Summary


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://cern.ch/
http://home.web.cern.ch/
http://home.cern/

priority - 24 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 5 blocking script resources and 6 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://home.cern/sites/home.web.cern.ch/files/js/j…mcdDFrL289YA7h80ySs.js
http://home.cern/sites/home.web.cern.ch/files/js/j…BHleaYLOx5R9EWBOMRU.js
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http://home.cern/sites/home.web.cern.ch/files/js/j…63f7lPxSnpvsLMj9eOI.js
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Optimize CSS Delivery of the following:

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http://home.cern/sites/home.web.cern.ch/files/css/…N5GHF30iYt81HvQJc8.css
http://framework.web.cern.ch/framework/2.0/fonts/PTSansWeb/PTSansWeb.css
http://home.cern/sites/home.web.cern.ch/files/css/…xx03lrdBXyecNOo6Fo.css
http://home.cern/sites/home.web.cern.ch/files/css/…Y_8hF73z5QRhAoDQJI.css

priority - 22 Optimize images

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

Optimize the following images to reduce their size by 217.8KiB (53% reduction).

Compressing http://cds.cern.ch/record/1994442/files/cloud_run1…pg?subformat=icon-1440 could save 216.1KiB (53% reduction).
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priority - 13 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://framework.web.cern.ch/framework/2.0/fonts/PTSansWeb/PTC75F_W.woff (expiration not specified)
http://framework.web.cern.ch/framework/2.0/fonts/PTSansWeb/PTS55F_W.woff (expiration not specified)
http://framework.web.cern.ch/framework/2.0/fonts/PTSansWeb/PTS56F_W.woff (expiration not specified)
http://framework.web.cern.ch/framework/2.0/fonts/PTSansWeb/PTS75F_W.woff (expiration not specified)
http://framework.web.cern.ch/framework/2.0/fonts/PTSansWeb/PTSansWeb.css (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/css/…SyX66A5f4ymmZ7DCUA.css (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/css/…N5GHF30iYt81HvQJc8.css (expiration not specified)
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http://home.cern/homepage-event-json?&callback=jQu…258847&_=1495395258849 (60 seconds)
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priority - 8 Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Only about 17% of the final above-the-fold content could be rendered with the full HTML response.

priority - 1 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 7.3KiB (17% reduction).

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Minifying http://home.cern/sites/home.web.cern.ch/files/js/j…BHleaYLOx5R9EWBOMRU.js could save 875B (45% reduction) after compression.
Minifying http://home.cern/sites/home.web.cern.ch/files/js/j…jmm-RRZ3yJ-MZabvyDk.js could save 640B (41% reduction) after compression.

priority - 0 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 2KiB (82% reduction).

Compressing http://framework.web.cern.ch/framework/2.0/fonts/PTSansWeb/PTSansWeb.css could save 2KiB (82% reduction).

cern.ch Mobile Resources

Total Resources27
Number of Hosts6
Static Resources21
JavaScript Resources8
CSS Resources7

cern.ch Mobile Resource Breakdown

cern.ch mobile page usability

Last tested: 2017-05-21

Mobile Usability Good
93/100

cern.ch Mobile Usability Test Quick Summary


priority - 6 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="http://home.we…eriments/cloud">Cloud bananas</a> is close to 1 other tap targets.
The tap target <a href="http://cern.ch/jobs">Jobs</a> and 14 others are close to other tap targets.
The tap target <a href="http://facebook.com/cern" class="ext">Facebook (link is external)</a> and 4 others are close to other tap targets.

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cern.ch 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.

cern.ch 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.