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cern.ch Website Information

Daily Unique Visits: 33,904

Daily Page Views: 203,424

Income Per Day: $407

Estimated Value: $293,040

This website is located in Switzerland and is using following IP address 188.184.9.234. See the complete list of popular websites hosted in Switzerland.

cern.ch is registered under .CH top-level domain. Please check other sites in .CH zone.

Website cern.ch is using the following name servers:

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

and is probably hosted by CERN, CH. See the full list of other websites hosted by CERN, CH.

The highest website cern.ch position in Alexa rank database was 1841 and the lowest rank position was 216209. Current position of cern.ch in Alexa rank database is 42303.

Desktop speed score of cern.ch (69/100) is better than the results of 50.07% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of cern.ch (93/100) is better than the results of 49.72% of other sites and means that the page is mobile-friendly.

Mobile speed score of cern.ch (53/100) is better than the results of 37.88% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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cern.ch Alexa Rank

The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.


cern.ch whois

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cern.ch server information

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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

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

Optimize the following images to reduce their size by 217.9KiB (53% reduction).

Compressing http://cds.cern.ch/record/1994442/files/cloud_run1…pg?subformat=icon-1440 could save 216.1KiB (53% reduction).
Compressing http://home.cern/sites/home.web.cern.ch/themes/cer…e/images/icon-link.png could save 963B (80% reduction).
Compressing http://home.cern/sites/home.web.cern.ch/themes/cer…ern-logo-white-100.png could save 877B (16% reduction).

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:

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)
http://home.cern/sites/home.web.cern.ch/files/css/…vlPDoZXuBZMWKAz5GY.css (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/css/…xx03lrdBXyecNOo6Fo.css (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/css/…Y_8hF73z5QRhAoDQJI.css (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/css/…nAVpkSeD_yPtUN9tBk.css (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/js/j…BHleaYLOx5R9EWBOMRU.js (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/js/j…fkdvlLMRlH4F6iufpAI.js (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/js/j…jmm-RRZ3yJ-MZabvyDk.js (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/js/j…mcdDFrL289YA7h80ySs.js (expiration not specified)
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.

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
http://home.cern/sites/home.web.cern.ch/files/js/j…fkdvlLMRlH4F6iufpAI.js
http://home.cern/sites/home.web.cern.ch/files/js/j…63f7lPxSnpvsLMj9eOI.js
http://home.cern/sites/home.web.cern.ch/files/js/j…jmm-RRZ3yJ-MZabvyDk.js

Optimize CSS Delivery of the following:

http://home.cern/sites/home.web.cern.ch/files/css/…nAVpkSeD_yPtUN9tBk.css
http://home.cern/sites/home.web.cern.ch/files/css/…SyX66A5f4ymmZ7DCUA.css
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 - 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).

Minifying http://home.cern/sites/home.web.cern.ch/files/js/j…mcdDFrL289YA7h80ySs.js could save 4.7KiB (13% reduction) after compression.
Minifying http://home.cern/sites/home.web.cern.ch/files/js/j…fkdvlLMRlH4F6iufpAI.js could save 1.2KiB (45% reduction) after compression.
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 Desktop Resource Breakdown

Total Resources28
Number of Hosts6
Static Resources22
JavaScript Resources9
CSS Resources7

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.

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
http://home.cern/sites/home.web.cern.ch/files/js/j…fkdvlLMRlH4F6iufpAI.js
http://home.cern/sites/home.web.cern.ch/files/js/j…63f7lPxSnpvsLMj9eOI.js
http://home.cern/sites/home.web.cern.ch/files/js/j…jmm-RRZ3yJ-MZabvyDk.js

Optimize CSS Delivery of the following:

http://home.cern/sites/home.web.cern.ch/files/css/…nAVpkSeD_yPtUN9tBk.css
http://home.cern/sites/home.web.cern.ch/files/css/…SyX66A5f4ymmZ7DCUA.css
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).
Compressing http://home.cern/sites/home.web.cern.ch/themes/cer…e/images/icon-link.png could save 963B (80% reduction).
Compressing http://home.cern/sites/all/modules/cern_toolbar/img/toolbarsprite.png could save 848B (26% reduction).

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)
http://home.cern/sites/home.web.cern.ch/files/css/…vlPDoZXuBZMWKAz5GY.css (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/css/…xx03lrdBXyecNOo6Fo.css (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/css/…Y_8hF73z5QRhAoDQJI.css (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/css/…nAVpkSeD_yPtUN9tBk.css (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/js/j…BHleaYLOx5R9EWBOMRU.js (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/js/j…fkdvlLMRlH4F6iufpAI.js (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/js/j…jmm-RRZ3yJ-MZabvyDk.js (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/js/j…mcdDFrL289YA7h80ySs.js (expiration not specified)
http://home.cern/sites/home.web.cern.ch/files/js/j…63f7lPxSnpvsLMj9eOI.js (expiration not specified)
http://home.cern/homepage-event-json?&callback=jQu…258847&_=1495395258849 (60 seconds)
http://www.google-analytics.com/analytics.js (2 hours)

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).

Minifying http://home.cern/sites/home.web.cern.ch/files/js/j…mcdDFrL289YA7h80ySs.js could save 4.7KiB (13% reduction) after compression.
Minifying http://home.cern/sites/home.web.cern.ch/files/js/j…fkdvlLMRlH4F6iufpAI.js could save 1.2KiB (45% reduction) after compression.
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 Resource Breakdown

Total Resources27
Number of Hosts6
Static Resources21
JavaScript Resources8
CSS Resources7

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.

cern.ch Mobile Resource Breakdown

Total Resources27
Number of Hosts6
Static Resources21
JavaScript Resources8
CSS Resources7

cern.ch HTML validation

Errors

Attribute “xmlns:content” not allowed here.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute “xmlns:dc” not allowed here.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute “xmlns:foaf” not allowed here.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute “xmlns:og” not allowed here.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute “xmlns:rdfs” not allowed here.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute “xmlns:sioc” not allowed here.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute “xmlns:sioct” not allowed here.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute “xmlns:skos” not allowed here.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute “xmlns:xsd” not allowed here.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.

Line: 17 Column: 65 - 51
"...[endif]--> <head profile="http://www.w3.org/1999/xhtml/vocab"> <..."

Bad value “cleartype” for attribute “http-equiv” on element “meta”.

Line: 30 Column: 5 - 46
"...yes"> <meta http-equiv="cleartype" content="on"> <..."

A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.

Line: 31 Column: 5 - 66
"..."on"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> ..."

When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.

Line: 103 Column: 72 - 126
"...t active"><a href="/" class="language-link active" xml:lang="en">Englis..." Line: 104 Column: 21 - 70
"..."fr last"><a href="/fr" class="language-link" xml:lang="fr">França..."

Warnings

Attribute with the local name “xmlns:content” is not serializable as XML 1.0.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute with the local name “xmlns:dc” is not serializable as XML 1.0.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute with the local name “xmlns:foaf” is not serializable as XML 1.0.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute with the local name “xmlns:og” is not serializable as XML 1.0.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute with the local name “xmlns:rdfs” is not serializable as XML 1.0.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute with the local name “xmlns:sioc” is not serializable as XML 1.0.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute with the local name “xmlns:sioct” is not serializable as XML 1.0.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute with the local name “xmlns:skos” is not serializable as XML 1.0.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

Attribute with the local name “xmlns:xsd” is not serializable as XML 1.0.

Line: 15 Column: 42 - 48
"... 7)]><!--><html lang="en" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"><!--<!..."

The “banner” role is unnecessary for element “header”.

Line: 86 Column: 2 - 35
"...bg-img"> <header id="header" role="banner"> ..."

The “navigation” role is unnecessary for element “nav”.

Line: 93 Column: 17 - 54
"... <nav id="main-menu" role="navigation"> ..."

The “contentinfo” role is unnecessary for element “footer”.

Line: 185 Column: 1 - 39
"...-img --> <footer id="footer" role="contentinfo"> ..."

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cern.ch Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.


cern.ch TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.