centr.org Website Information
Daily Unique Visits: 3,882
Daily Page Views: 15,528
Income Per Day: $43
Estimated Value: $23,220
centr.org is registered under .ORG top-level domain. Please check other sites in .ORG zone.
No name server records were found.
and is probably hosted by Combell NV. See the full list of other websites hosted by Combell NV.
The highest website centr.org position in Alexa rank database was 85983 and the lowest rank position was 991943. Current position of centr.org in Alexa rank database is 323289.
Desktop speed score of centr.org (52/100) is better than the results of 25.95% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of centr.org (99/100) is better than the results of 79.46% of other sites and means that the page is mobile-friendly.
Mobile speed score of centr.org (44/100) is better than the results of 24.22% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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centr.org 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.
centr.org whois
WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.
Domain Name: centr.org
Registry Domain ID: 936f870bbe11493784f474a316b0a682-LROR
Registrar WHOIS Server: http://whois.combell.com
Registrar URL: http://whois.combell.com/
Updated Date: 2024-02-23T07:43:13Z
Creation Date: 1998-09-29T04:00:00Z
Registry Expiry Date: 2025-09-28T04:00:00Z
Registrar: Combell NV
Registrar IANA ID: 1467
Registrar Abuse Contact Email: activation@combell.com
Registrar Abuse Contact Phone: +32.92187979
Domain Status: ok https://icann.org/epp#ok
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: CENTR vzwasbl
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province:
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: BE
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext: REDACTED FOR PRIVACY
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext: REDACTED FOR PRIVACY
Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: ns3.combell.net
Name Server: ns4.combell.net
DNSSEC: signedDelegation
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2024-07-12T03:37:50Z
Registry Domain ID: 936f870bbe11493784f474a316b0a682-LROR
Registrar WHOIS Server: http://whois.combell.com
Registrar URL: http://whois.combell.com/
Updated Date: 2024-02-23T07:43:13Z
Creation Date: 1998-09-29T04:00:00Z
Registry Expiry Date: 2025-09-28T04:00:00Z
Registrar: Combell NV
Registrar IANA ID: 1467
Registrar Abuse Contact Email: activation@combell.com
Registrar Abuse Contact Phone: +32.92187979
Domain Status: ok https://icann.org/epp#ok
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: CENTR vzwasbl
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province:
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: BE
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext: REDACTED FOR PRIVACY
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext: REDACTED FOR PRIVACY
Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: ns3.combell.net
Name Server: ns4.combell.net
DNSSEC: signedDelegation
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2024-07-12T03:37:50Z
centr.org server information
Servers Location
centr.org desktop page speed rank
Last tested: 2018-07-01
Desktop Speed
Bad
52/100
centr.org Desktop Speed Test Quick Summary
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priority - 27Leverage 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:
https://centr.org//modules/mod_event/assets/js/events.js (expiration not specified)
https://centr.org/images/library/CENTR-Guide_to_IC…20180621_cover-160.jpg (expiration not specified)
https://centr.org/images/library/CENTR-Report-ICAN…20180629-cover-160.jpg (expiration not specified)
https://centr.org/images/library/CENTR-Report-IETF…20180410_cover-160.jpg (expiration not specified)
https://centr.org/images/library/CENTRstats-Global…t-2018-1-cover-160.jpg (expiration not specified)
https://centr.org/images/workgroup/admin.png (expiration not specified)
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https://centr.org/modules/mod_cookielaw/assets/plugin.min.js (expiration not specified)
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https://centr.org/modules/mod_event/assets/css/calendar.css (expiration not specified)
https://centr.org/modules/mod_event/assets/css/jquery.mCustomScrollbar.css (expiration not specified)
https://centr.org/modules/mod_event/assets/images/cal-arrows.png (expiration not specified)
https://centr.org/modules/mod_event/assets/js/jque…crollbar.concat.min.js (expiration not specified)
https://centr.org/templates/centr/css/bootstrap.css (expiration not specified)
https://centr.org/templates/centr/css/flexslider.css (expiration not specified)
https://centr.org/templates/centr/css/font-awesome.css (expiration not specified)
https://centr.org/templates/centr/css/jquery-ui.css (expiration not specified)
https://centr.org/templates/centr/css/main.css (expiration not specified)
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https://centr.org/templates/centr/images/yt-f.png (expiration not specified)
https://centr.org/templates/centr/js/bootstrap.min.js (expiration not specified)
https://centr.org/templates/centr/js/form_elements.js (expiration not specified)
https://centr.org/templates/centr/js/jquery-1.9.1.min.js (expiration not specified)
https://centr.org/templates/centr/js/jquery-migrate-1.0.0.js (expiration not specified)
https://centr.org/templates/centr/js/jquery-ui.min.js (expiration not specified)
https://centr.org/templates/centr/js/jquery.flexslider.js (expiration not specified)
https://centr.org/templates/centr/js/jquery.mCustomScrollbar.min.js (expiration not specified)
https://centr.org/templates/centr/js/jquery.validate.min.js (expiration not specified)
https://centr.org/templates/centr/js/main.js (expiration not specified)
https://matomo.centr.org/piwik.js (expiration not specified)
https://s3-eu-west-1.amazonaws.com/assets.cookieco…ookie-consent-logo.png (expiration not specified)
https://www.google.com/recaptcha/api.js?hl=en (5 minutes)
https://www.google.com/recaptcha/api2/webworker.js?hl=en&v=v1529908317173 (5 minutes)
https://use.typekit.net/vyf8kfi.js (10 minutes)
https://www.google.com/recaptcha/api/js/recaptcha_ajax.js (50 minutes)
https://js-agent.newrelic.com/nr-1071.min.js (2 hours)
https://ssl.google-analytics.com/ga.js (2 hours)
priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 14 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://centr.org/templates/centr/js/jquery-1.9.1.min.js
https://centr.org/templates/centr/js/bootstrap.min.js
https://centr.org/templates/centr/js/jquery.flexslider.js
https://centr.org/templates/centr/js/jquery-ui.min.js
https://centr.org/templates/centr/js/jquery-migrate-1.0.0.js
https://centr.org/templates/centr/js/form_elements.js
https://centr.org/templates/centr/js/jquery.mCustomScrollbar.min.js
https://centr.org/templates/centr/js/main.js
https://use.typekit.net/vyf8kfi.js
https://centr.org/media/system/js/caption.js?7624e…3a560a855654f7c0dfca1b
https://centr.org/media/jui/js/bootstrap.min.js?76…3a560a855654f7c0dfca1b
https://centr.org/media/system/js/core.js?7624e56e143a560a855654f7c0dfca1b
https://centr.org/media/system/js/keepalive.js?762…3a560a855654f7c0dfca1b
https://www.google.com/recaptcha/api/js/recaptcha_ajax.js
https://centr.org/templates/centr/js/bootstrap.min.js
https://centr.org/templates/centr/js/jquery.flexslider.js
https://centr.org/templates/centr/js/jquery-ui.min.js
https://centr.org/templates/centr/js/jquery-migrate-1.0.0.js
https://centr.org/templates/centr/js/form_elements.js
https://centr.org/templates/centr/js/jquery.mCustomScrollbar.min.js
https://centr.org/templates/centr/js/main.js
https://use.typekit.net/vyf8kfi.js
https://centr.org/media/system/js/caption.js?7624e…3a560a855654f7c0dfca1b
https://centr.org/media/jui/js/bootstrap.min.js?76…3a560a855654f7c0dfca1b
https://centr.org/media/system/js/core.js?7624e56e143a560a855654f7c0dfca1b
https://centr.org/media/system/js/keepalive.js?762…3a560a855654f7c0dfca1b
https://www.google.com/recaptcha/api/js/recaptcha_ajax.js
Optimize CSS Delivery of the following:
https://centr.org/templates/centr/css/bootstrap.css
https://centr.org/templates/centr/css/flexslider.css
https://centr.org/templates/centr/css/main.css
https://centr.org/templates/centr/css/jquery-ui.css
https://centr.org/templates/centr/css/responsive.css
https://centr.org/templates/centr/css/font-awesome.css
https://centr.org/templates/centr/css/flexslider.css
https://centr.org/templates/centr/css/main.css
https://centr.org/templates/centr/css/jquery-ui.css
https://centr.org/templates/centr/css/responsive.css
https://centr.org/templates/centr/css/font-awesome.css
priority - 3Reduce server response time
priority - 1Minify 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 10.6KiB (35% reduction).
Minifying https://centr.org//fancybox/source/jquery.fancybox.js?v=2.1.4 could save 4.2KiB (31% reduction) after compression.
Minifying https://centr.org/templates/centr/js/jquery.flexslider.js could save 3.2KiB (37% reduction) after compression.
Minifying https://centr.org/templates/centr/js/jquery-migrate-1.0.0.js could save 2KiB (39% reduction) after compression.
Minifying https://centr.org//modules/mod_event/assets/js/events.js could save 666B (52% reduction) after compression.
Minifying https://centr.org/templates/centr/js/main.js could save 578B (29% reduction) after compression.
Minifying https://centr.org/templates/centr/js/jquery.flexslider.js could save 3.2KiB (37% reduction) after compression.
Minifying https://centr.org/templates/centr/js/jquery-migrate-1.0.0.js could save 2KiB (39% reduction) after compression.
Minifying https://centr.org//modules/mod_event/assets/js/events.js could save 666B (52% reduction) after compression.
Minifying https://centr.org/templates/centr/js/main.js could save 578B (29% reduction) after compression.
priority - 1Minify 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 9.7KiB (21% reduction).
Minifying https://centr.org/templates/centr/css/main.css could save 4.2KiB (19% reduction) after compression.
Minifying https://centr.org/templates/centr/css/jquery-ui.css could save 1.6KiB (24% reduction) after compression.
Minifying https://centr.org/modules/mod_event/assets/css/jquery.mCustomScrollbar.css could save 1.6KiB (29% reduction) after compression.
Minifying https://centr.org/templates/centr/css/responsive.css could save 1.1KiB (18% reduction) after compression.
Minifying https://centr.org/modules/mod_event/assets/css/calendar.css could save 624B (23% reduction) after compression.
Minifying https://centr.org/templates/centr/css/flexslider.css could save 473B (35% reduction) after compression.
Minifying https://centr.org//fancybox/source/jquery.fancybox.css?v=2.1.4 could save 183B (15% reduction) after compression.
Minifying https://centr.org/templates/centr/css/jquery-ui.css could save 1.6KiB (24% reduction) after compression.
Minifying https://centr.org/modules/mod_event/assets/css/jquery.mCustomScrollbar.css could save 1.6KiB (29% reduction) after compression.
Minifying https://centr.org/templates/centr/css/responsive.css could save 1.1KiB (18% reduction) after compression.
Minifying https://centr.org/modules/mod_event/assets/css/calendar.css could save 624B (23% reduction) after compression.
Minifying https://centr.org/templates/centr/css/flexslider.css could save 473B (35% reduction) after compression.
Minifying https://centr.org//fancybox/source/jquery.fancybox.css?v=2.1.4 could save 183B (15% reduction) after compression.
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 3KiB (23% reduction).
Minifying https://centr.org/ could save 3KiB (23% reduction) after compression.
centr.org Desktop Resource Breakdown
| Total Resources | 88 |
| Number of Hosts | 14 |
| Static Resources | 63 |
| JavaScript Resources | 29 |
| CSS Resources | 12 |
centr.org mobile page speed rank
Last tested: 2018-07-01
Mobile Speed
Bad
44/100
centr.org Mobile Speed Test Quick Summary
priority - 58Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 561.9KiB (88% reduction).
Compressing https://centr.org/modules/mod_event/assets/images/cal-arrows.png could save 421.2KiB (99% reduction).
Compressing https://centr.org/images/workgroup/technical.png could save 15.1KiB (83% reduction).
Compressing https://centr.org/images/workgroup/admin.png could save 15KiB (83% reduction).
Compressing https://centr.org/images/workgroup/marketing.png could save 15KiB (84% reduction).
Compressing https://centr.org/images/workgroup/legal.png could save 15KiB (84% reduction).
Compressing https://centr.org/images/workgroup/security.png could save 14.9KiB (86% reduction).
Compressing https://centr.org/images/workgroup/research.png could save 14.9KiB (85% reduction).
Compressing https://centr.org/images/library/CENTRstats-Global…t-2018-1-cover-160.jpg could save 9.2KiB (47% reduction).
Compressing https://centr.org/images/library/CENTR-Report-ICAN…20180629-cover-160.jpg could save 8.1KiB (42% reduction).
Compressing https://centr.org/images/library/CENTR-Report-IETF…20180410_cover-160.jpg could save 7.7KiB (43% reduction).
Compressing https://centr.org/images/library/CENTR-Guide_to_IC…20180621_cover-160.jpg could save 6.8KiB (50% reduction).
Compressing https://centr.org/templates/centr/images/logo.png could save 3.7KiB (31% reduction).
Compressing https://centr.org/templates/centr/images/res-nav.png could save 2.7KiB (95% reduction).
Compressing https://centr.org/templates/centr/images/twitter-bg.png could save 1.2KiB (19% reduction).
Compressing https://centr.org/templates/centr/images/fb-f.png could save 1.1KiB (73% reduction).
Compressing https://centr.org/templates/centr/images/tw-f.png could save 1.1KiB (67% reduction).
Compressing https://centr.org/templates/centr/images/ln-f.png could save 1.1KiB (68% reduction).
Compressing https://centr.org/templates/centr/images/yt-f.png could save 1KiB (66% reduction).
Compressing https://centr.org/templates/centr/images/search.png could save 1KiB (57% reduction).
Compressing https://centr.org/templates/centr/images/arw-blue.png could save 1KiB (84% reduction).
Compressing https://centr.org/templates/centr/images/fax.png could save 1KiB (82% reduction).
Compressing https://centr.org/templates/centr/images/arw-lightblue.png could save 1,022B (83% reduction).
Compressing https://centr.org/templates/centr/images/arw-red.png could save 1,021B (83% reduction).
Compressing https://centr.org/templates/centr/images/phone.png could save 1,018B (78% reduction).
Compressing https://centr.org/templates/centr/images/arw-white.png could save 985B (84% reduction).
Compressing https://centr.org/images/workgroup/technical.png could save 15.1KiB (83% reduction).
Compressing https://centr.org/images/workgroup/admin.png could save 15KiB (83% reduction).
Compressing https://centr.org/images/workgroup/marketing.png could save 15KiB (84% reduction).
Compressing https://centr.org/images/workgroup/legal.png could save 15KiB (84% reduction).
Compressing https://centr.org/images/workgroup/security.png could save 14.9KiB (86% reduction).
Compressing https://centr.org/images/workgroup/research.png could save 14.9KiB (85% reduction).
Compressing https://centr.org/images/library/CENTRstats-Global…t-2018-1-cover-160.jpg could save 9.2KiB (47% reduction).
Compressing https://centr.org/images/library/CENTR-Report-ICAN…20180629-cover-160.jpg could save 8.1KiB (42% reduction).
Compressing https://centr.org/images/library/CENTR-Report-IETF…20180410_cover-160.jpg could save 7.7KiB (43% reduction).
Compressing https://centr.org/images/library/CENTR-Guide_to_IC…20180621_cover-160.jpg could save 6.8KiB (50% reduction).
Compressing https://centr.org/templates/centr/images/logo.png could save 3.7KiB (31% reduction).
Compressing https://centr.org/templates/centr/images/res-nav.png could save 2.7KiB (95% reduction).
Compressing https://centr.org/templates/centr/images/twitter-bg.png could save 1.2KiB (19% reduction).
Compressing https://centr.org/templates/centr/images/fb-f.png could save 1.1KiB (73% reduction).
Compressing https://centr.org/templates/centr/images/tw-f.png could save 1.1KiB (67% reduction).
Compressing https://centr.org/templates/centr/images/ln-f.png could save 1.1KiB (68% reduction).
Compressing https://centr.org/templates/centr/images/yt-f.png could save 1KiB (66% reduction).
Compressing https://centr.org/templates/centr/images/search.png could save 1KiB (57% reduction).
Compressing https://centr.org/templates/centr/images/arw-blue.png could save 1KiB (84% reduction).
Compressing https://centr.org/templates/centr/images/fax.png could save 1KiB (82% reduction).
Compressing https://centr.org/templates/centr/images/arw-lightblue.png could save 1,022B (83% reduction).
Compressing https://centr.org/templates/centr/images/arw-red.png could save 1,021B (83% reduction).
Compressing https://centr.org/templates/centr/images/phone.png could save 1,018B (78% reduction).
Compressing https://centr.org/templates/centr/images/arw-white.png could save 985B (84% reduction).
priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 14 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://centr.org/templates/centr/js/jquery-1.9.1.min.js
https://centr.org/templates/centr/js/bootstrap.min.js
https://centr.org/templates/centr/js/jquery.flexslider.js
https://centr.org/templates/centr/js/jquery-ui.min.js
https://centr.org/templates/centr/js/jquery-migrate-1.0.0.js
https://centr.org/templates/centr/js/form_elements.js
https://centr.org/templates/centr/js/jquery.mCustomScrollbar.min.js
https://centr.org/templates/centr/js/main.js
https://use.typekit.net/vyf8kfi.js
https://centr.org/media/system/js/caption.js?7624e…3a560a855654f7c0dfca1b
https://centr.org/media/jui/js/bootstrap.min.js?76…3a560a855654f7c0dfca1b
https://centr.org/media/system/js/core.js?7624e56e143a560a855654f7c0dfca1b
https://centr.org/media/system/js/keepalive.js?762…3a560a855654f7c0dfca1b
https://www.google.com/recaptcha/api/js/recaptcha_ajax.js
https://centr.org/templates/centr/js/bootstrap.min.js
https://centr.org/templates/centr/js/jquery.flexslider.js
https://centr.org/templates/centr/js/jquery-ui.min.js
https://centr.org/templates/centr/js/jquery-migrate-1.0.0.js
https://centr.org/templates/centr/js/form_elements.js
https://centr.org/templates/centr/js/jquery.mCustomScrollbar.min.js
https://centr.org/templates/centr/js/main.js
https://use.typekit.net/vyf8kfi.js
https://centr.org/media/system/js/caption.js?7624e…3a560a855654f7c0dfca1b
https://centr.org/media/jui/js/bootstrap.min.js?76…3a560a855654f7c0dfca1b
https://centr.org/media/system/js/core.js?7624e56e143a560a855654f7c0dfca1b
https://centr.org/media/system/js/keepalive.js?762…3a560a855654f7c0dfca1b
https://www.google.com/recaptcha/api/js/recaptcha_ajax.js
Optimize CSS Delivery of the following:
https://centr.org/templates/centr/css/bootstrap.css
https://centr.org/templates/centr/css/flexslider.css
https://centr.org/templates/centr/css/main.css
https://centr.org/templates/centr/css/jquery-ui.css
https://centr.org/templates/centr/css/responsive.css
https://centr.org/templates/centr/css/font-awesome.css
https://centr.org/templates/centr/css/flexslider.css
https://centr.org/templates/centr/css/main.css
https://centr.org/templates/centr/css/jquery-ui.css
https://centr.org/templates/centr/css/responsive.css
https://centr.org/templates/centr/css/font-awesome.css
priority - 39Leverage 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:
https://centr.org//modules/mod_event/assets/js/events.js (expiration not specified)
https://centr.org/images/library/CENTR-Guide_to_IC…20180621_cover-160.jpg (expiration not specified)
https://centr.org/images/library/CENTR-Report-ICAN…20180629-cover-160.jpg (expiration not specified)
https://centr.org/images/library/CENTR-Report-IETF…20180410_cover-160.jpg (expiration not specified)
https://centr.org/images/library/CENTRstats-Global…t-2018-1-cover-160.jpg (expiration not specified)
https://centr.org/images/workgroup/admin.png (expiration not specified)
https://centr.org/images/workgroup/legal.png (expiration not specified)
https://centr.org/images/workgroup/marketing.png (expiration not specified)
https://centr.org/images/workgroup/research.png (expiration not specified)
https://centr.org/images/workgroup/security.png (expiration not specified)
https://centr.org/images/workgroup/technical.png (expiration not specified)
https://centr.org/modules/mod_event/assets/css/calendar.css (expiration not specified)
https://centr.org/modules/mod_event/assets/css/jquery.mCustomScrollbar.css (expiration not specified)
https://centr.org/modules/mod_event/assets/images/cal-arrows.png (expiration not specified)
https://centr.org/modules/mod_event/assets/js/jque…crollbar.concat.min.js (expiration not specified)
https://centr.org/templates/centr/css/bootstrap.css (expiration not specified)
https://centr.org/templates/centr/css/flexslider.css (expiration not specified)
https://centr.org/templates/centr/css/font-awesome.css (expiration not specified)
https://centr.org/templates/centr/css/jquery-ui.css (expiration not specified)
https://centr.org/templates/centr/css/main.css (expiration not specified)
https://centr.org/templates/centr/css/responsive.css (expiration not specified)
https://centr.org/templates/centr/images/arw-blue.png (expiration not specified)
https://centr.org/templates/centr/images/arw-lightblue.png (expiration not specified)
https://centr.org/templates/centr/images/arw-red.png (expiration not specified)
https://centr.org/templates/centr/images/arw-white.png (expiration not specified)
https://centr.org/templates/centr/images/fax.png (expiration not specified)
https://centr.org/templates/centr/images/fb-f.png (expiration not specified)
https://centr.org/templates/centr/images/ln-f.png (expiration not specified)
https://centr.org/templates/centr/images/logo.png (expiration not specified)
https://centr.org/templates/centr/images/map-dotted.png (expiration not specified)
https://centr.org/templates/centr/images/phone.png (expiration not specified)
https://centr.org/templates/centr/images/res-nav.png (expiration not specified)
https://centr.org/templates/centr/images/search.png (expiration not specified)
https://centr.org/templates/centr/images/tw-f.png (expiration not specified)
https://centr.org/templates/centr/images/twitter-bg.png (expiration not specified)
https://centr.org/templates/centr/images/yt-f.png (expiration not specified)
https://centr.org/templates/centr/js/bootstrap.min.js (expiration not specified)
https://centr.org/templates/centr/js/form_elements.js (expiration not specified)
https://centr.org/templates/centr/js/jquery-1.9.1.min.js (expiration not specified)
https://centr.org/templates/centr/js/jquery-migrate-1.0.0.js (expiration not specified)
https://centr.org/templates/centr/js/jquery-ui.min.js (expiration not specified)
https://centr.org/templates/centr/js/jquery.flexslider.js (expiration not specified)
https://centr.org/templates/centr/js/jquery.mCustomScrollbar.min.js (expiration not specified)
https://centr.org/templates/centr/js/jquery.validate.min.js (expiration not specified)
https://centr.org/templates/centr/js/main.js (expiration not specified)
https://matomo.centr.org/piwik.js (expiration not specified)
https://www.google.com/recaptcha/api.js?hl=en (5 minutes)
https://www.google.com/recaptcha/api2/webworker.js?hl=en&v=v1529908317173 (5 minutes)
https://use.typekit.net/vyf8kfi.js (10 minutes)
https://www.google.com/recaptcha/api/js/recaptcha_ajax.js (50 minutes)
https://js-agent.newrelic.com/nr-1071.min.js (2 hours)
https://ssl.google-analytics.com/ga.js (2 hours)
https://centr.org/images/library/CENTR-Guide_to_IC…20180621_cover-160.jpg (expiration not specified)
https://centr.org/images/library/CENTR-Report-ICAN…20180629-cover-160.jpg (expiration not specified)
https://centr.org/images/library/CENTR-Report-IETF…20180410_cover-160.jpg (expiration not specified)
https://centr.org/images/library/CENTRstats-Global…t-2018-1-cover-160.jpg (expiration not specified)
https://centr.org/images/workgroup/admin.png (expiration not specified)
https://centr.org/images/workgroup/legal.png (expiration not specified)
https://centr.org/images/workgroup/marketing.png (expiration not specified)
https://centr.org/images/workgroup/research.png (expiration not specified)
https://centr.org/images/workgroup/security.png (expiration not specified)
https://centr.org/images/workgroup/technical.png (expiration not specified)
https://centr.org/modules/mod_event/assets/css/calendar.css (expiration not specified)
https://centr.org/modules/mod_event/assets/css/jquery.mCustomScrollbar.css (expiration not specified)
https://centr.org/modules/mod_event/assets/images/cal-arrows.png (expiration not specified)
https://centr.org/modules/mod_event/assets/js/jque…crollbar.concat.min.js (expiration not specified)
https://centr.org/templates/centr/css/bootstrap.css (expiration not specified)
https://centr.org/templates/centr/css/flexslider.css (expiration not specified)
https://centr.org/templates/centr/css/font-awesome.css (expiration not specified)
https://centr.org/templates/centr/css/jquery-ui.css (expiration not specified)
https://centr.org/templates/centr/css/main.css (expiration not specified)
https://centr.org/templates/centr/css/responsive.css (expiration not specified)
https://centr.org/templates/centr/images/arw-blue.png (expiration not specified)
https://centr.org/templates/centr/images/arw-lightblue.png (expiration not specified)
https://centr.org/templates/centr/images/arw-red.png (expiration not specified)
https://centr.org/templates/centr/images/arw-white.png (expiration not specified)
https://centr.org/templates/centr/images/fax.png (expiration not specified)
https://centr.org/templates/centr/images/fb-f.png (expiration not specified)
https://centr.org/templates/centr/images/ln-f.png (expiration not specified)
https://centr.org/templates/centr/images/logo.png (expiration not specified)
https://centr.org/templates/centr/images/map-dotted.png (expiration not specified)
https://centr.org/templates/centr/images/phone.png (expiration not specified)
https://centr.org/templates/centr/images/res-nav.png (expiration not specified)
https://centr.org/templates/centr/images/search.png (expiration not specified)
https://centr.org/templates/centr/images/tw-f.png (expiration not specified)
https://centr.org/templates/centr/images/twitter-bg.png (expiration not specified)
https://centr.org/templates/centr/images/yt-f.png (expiration not specified)
https://centr.org/templates/centr/js/bootstrap.min.js (expiration not specified)
https://centr.org/templates/centr/js/form_elements.js (expiration not specified)
https://centr.org/templates/centr/js/jquery-1.9.1.min.js (expiration not specified)
https://centr.org/templates/centr/js/jquery-migrate-1.0.0.js (expiration not specified)
https://centr.org/templates/centr/js/jquery-ui.min.js (expiration not specified)
https://centr.org/templates/centr/js/jquery.flexslider.js (expiration not specified)
https://centr.org/templates/centr/js/jquery.mCustomScrollbar.min.js (expiration not specified)
https://centr.org/templates/centr/js/jquery.validate.min.js (expiration not specified)
https://centr.org/templates/centr/js/main.js (expiration not specified)
https://matomo.centr.org/piwik.js (expiration not specified)
https://www.google.com/recaptcha/api.js?hl=en (5 minutes)
https://www.google.com/recaptcha/api2/webworker.js?hl=en&v=v1529908317173 (5 minutes)
https://use.typekit.net/vyf8kfi.js (10 minutes)
https://www.google.com/recaptcha/api/js/recaptcha_ajax.js (50 minutes)
https://js-agent.newrelic.com/nr-1071.min.js (2 hours)
https://ssl.google-analytics.com/ga.js (2 hours)
priority - 4Reduce server response time
priority - 1Minify 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 10.6KiB (35% reduction).
Minifying https://centr.org//fancybox/source/jquery.fancybox.js?v=2.1.4 could save 4.2KiB (31% reduction) after compression.
Minifying https://centr.org/templates/centr/js/jquery.flexslider.js could save 3.2KiB (37% reduction) after compression.
Minifying https://centr.org/templates/centr/js/jquery-migrate-1.0.0.js could save 2KiB (39% reduction) after compression.
Minifying https://centr.org//modules/mod_event/assets/js/events.js could save 666B (52% reduction) after compression.
Minifying https://centr.org/templates/centr/js/main.js could save 578B (29% reduction) after compression.
Minifying https://centr.org/templates/centr/js/jquery.flexslider.js could save 3.2KiB (37% reduction) after compression.
Minifying https://centr.org/templates/centr/js/jquery-migrate-1.0.0.js could save 2KiB (39% reduction) after compression.
Minifying https://centr.org//modules/mod_event/assets/js/events.js could save 666B (52% reduction) after compression.
Minifying https://centr.org/templates/centr/js/main.js could save 578B (29% reduction) after compression.
priority - 1Minify 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 9.7KiB (21% reduction).
Minifying https://centr.org/templates/centr/css/main.css could save 4.2KiB (19% reduction) after compression.
Minifying https://centr.org/templates/centr/css/jquery-ui.css could save 1.6KiB (24% reduction) after compression.
Minifying https://centr.org/modules/mod_event/assets/css/jquery.mCustomScrollbar.css could save 1.6KiB (29% reduction) after compression.
Minifying https://centr.org/templates/centr/css/responsive.css could save 1.1KiB (18% reduction) after compression.
Minifying https://centr.org/modules/mod_event/assets/css/calendar.css could save 624B (23% reduction) after compression.
Minifying https://centr.org/templates/centr/css/flexslider.css could save 473B (35% reduction) after compression.
Minifying https://centr.org//fancybox/source/jquery.fancybox.css?v=2.1.4 could save 183B (15% reduction) after compression.
Minifying https://centr.org/templates/centr/css/jquery-ui.css could save 1.6KiB (24% reduction) after compression.
Minifying https://centr.org/modules/mod_event/assets/css/jquery.mCustomScrollbar.css could save 1.6KiB (29% reduction) after compression.
Minifying https://centr.org/templates/centr/css/responsive.css could save 1.1KiB (18% reduction) after compression.
Minifying https://centr.org/modules/mod_event/assets/css/calendar.css could save 624B (23% reduction) after compression.
Minifying https://centr.org/templates/centr/css/flexslider.css could save 473B (35% reduction) after compression.
Minifying https://centr.org//fancybox/source/jquery.fancybox.css?v=2.1.4 could save 183B (15% reduction) after compression.
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 2.9KiB (23% reduction).
Minifying https://centr.org/ could save 2.9KiB (23% reduction) after compression.
centr.org Mobile Resource Breakdown
| Total Resources | 80 |
| Number of Hosts | 10 |
| Static Resources | 58 |
| JavaScript Resources | 27 |
| CSS Resources | 10 |
centr.org mobile page usability
Last tested: 2018-07-01
Mobile Usability
Good
99/100
centr.org Mobile Usability Test Quick Summary
priority - 1Size 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="/library/libra…n-icann62.html" class="primary-btn">View</a> and 3 others are close to other tap targets.The tap target
<a href="http://www.twi….com/CENTRnews" class="tw_user">@CENTRnews</a> and 3 others are close to other tap targets.The tap target
<a href="https://t.co/S3FwEq1S1t" class="tw_url">https://t.co/S3FwEq1S1t</a> and 1 others are close to other tap targets.The tap target
<a id="main_contact_centr" href="gro.rtnec@tairaterces:otliam">secretariat@centr.org</a> and 1 others are close to other tap targets.The tap target
<a href="/sitemap.html">Sitemap</a> and 2 others are close to other tap targets.centr.org HTML validation
Errors
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Line: 56 Column: 2 - 70
"...org/" /> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <met..."
"...org/" /> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <met..."
Element “input” with attribute “type” whose value is “button” must have non-empty attribute “value”.
Line: 273 Column: 10 - 51
"... <input type="button" class="searchform" /> ..."
"... <input type="button" class="searchform" /> ..."
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Line: 305 Column: 29 - 67
"... <div id="searchtext1" class="datetext"></div>..." Line: 311 Column: 29 - 67
"... <div id="searchtext2" class="datetext"></div>..."
"... <div id="searchtext1" class="datetext"></div>..." Line: 311 Column: 29 - 67
"... <div id="searchtext2" class="datetext"></div>..."
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Line: 338 Column: 55 - 98
"...ntr.org/"><img src="/templates/centr/images/logo.png"></a></..." Line: 340 Column: 95 - 138
"...entrnews"><img src="/templates/centr/images/fb-f.png"></a></..." Line: 341 Column: 90 - 133
"...ENTRnews"><img src="/templates/centr/images/tw-f.png"></a></..." Line: 342 Column: 127 - 170
"...any-name"><img src="/templates/centr/images/ln-f.png"></a></..." Line: 343 Column: 98 - 141
"...CENTRDNS"><img src="/templates/centr/images/yt-f.png"></a></..." Line: 443 Column: 76 - 163
"...102.html"><img src="https://centr.org/images/library/CENTR-Report-IETF102-20180806-cover-160.jpg"></a> ..." Line: 451 Column: 72 - 156
"...ing.html"><img src="https://centr.org/images/library/open-position-communications-manager.png"></a> ..." Line: 459 Column: 75 - 161
"...e76.html"><img src="https://centr.org/images/library/CENTR-Report-RIPE76-20180717-cover-160.jpg"></a> ..." Line: 467 Column: 76 - 163
"...n62.html"><img src="https://centr.org/images/library/CENTR-Report-ICANN62-20180629-cover-160.jpg"></a> ..." Line: 541 Column: 7 - 45
"...e"> <img src="/images/workgroup/admin.png"> ..." Line: 557 Column: 7 - 45
"...e"> <img src="/images/workgroup/legal.png"> ..." Line: 573 Column: 7 - 49
"...e"> <img src="/images/workgroup/marketing.png"> ..." Line: 589 Column: 7 - 48
"...e"> <img src="/images/workgroup/research.png"> ..." Line: 605 Column: 7 - 48
"...e"> <img src="/images/workgroup/security.png"> ..." Line: 621 Column: 7 - 49
"...e"> <img src="/images/workgroup/technical.png"> ..." Line: 775 Column: 25 - 69
"... <img src="/templates/centr/images/phone.png">+32 2 ..." Line: 776 Column: 25 - 67
"... <img src="/templates/centr/images/fax.png">+32 2 ..." Line: 782 Column: 111 - 154
"...entrnews"><img src="/templates/centr/images/fb-f.png"></a></..." Line: 783 Column: 106 - 149
"...ENTRnews"><img src="/templates/centr/images/tw-f.png"></a></..." Line: 784 Column: 143 - 186
"...any-name"><img src="/templates/centr/images/ln-f.png"></a></..." Line: 785 Column: 114 - 157
"...CENTRDNS"><img src="/templates/centr/images/yt-f.png"></a></..."
"...ntr.org/"><img src="/templates/centr/images/logo.png"></a></..." Line: 340 Column: 95 - 138
"...entrnews"><img src="/templates/centr/images/fb-f.png"></a></..." Line: 341 Column: 90 - 133
"...ENTRnews"><img src="/templates/centr/images/tw-f.png"></a></..." Line: 342 Column: 127 - 170
"...any-name"><img src="/templates/centr/images/ln-f.png"></a></..." Line: 343 Column: 98 - 141
"...CENTRDNS"><img src="/templates/centr/images/yt-f.png"></a></..." Line: 443 Column: 76 - 163
"...102.html"><img src="https://centr.org/images/library/CENTR-Report-IETF102-20180806-cover-160.jpg"></a> ..." Line: 451 Column: 72 - 156
"...ing.html"><img src="https://centr.org/images/library/open-position-communications-manager.png"></a> ..." Line: 459 Column: 75 - 161
"...e76.html"><img src="https://centr.org/images/library/CENTR-Report-RIPE76-20180717-cover-160.jpg"></a> ..." Line: 467 Column: 76 - 163
"...n62.html"><img src="https://centr.org/images/library/CENTR-Report-ICANN62-20180629-cover-160.jpg"></a> ..." Line: 541 Column: 7 - 45
"...e"> <img src="/images/workgroup/admin.png"> ..." Line: 557 Column: 7 - 45
"...e"> <img src="/images/workgroup/legal.png"> ..." Line: 573 Column: 7 - 49
"...e"> <img src="/images/workgroup/marketing.png"> ..." Line: 589 Column: 7 - 48
"...e"> <img src="/images/workgroup/research.png"> ..." Line: 605 Column: 7 - 48
"...e"> <img src="/images/workgroup/security.png"> ..." Line: 621 Column: 7 - 49
"...e"> <img src="/images/workgroup/technical.png"> ..." Line: 775 Column: 25 - 69
"... <img src="/templates/centr/images/phone.png">+32 2 ..." Line: 776 Column: 25 - 67
"... <img src="/templates/centr/images/fax.png">+32 2 ..." Line: 782 Column: 111 - 154
"...entrnews"><img src="/templates/centr/images/fb-f.png"></a></..." Line: 783 Column: 106 - 149
"...ENTRnews"><img src="/templates/centr/images/tw-f.png"></a></..." Line: 784 Column: 143 - 186
"...any-name"><img src="/templates/centr/images/ln-f.png"></a></..." Line: 785 Column: 114 - 157
"...CENTRDNS"><img src="/templates/centr/images/yt-f.png"></a></..."
No space between attributes.
Line: 538 Column: - 161
"......" Line: 554 Column: - 163
"......" Line: 570 Column: - 156
"......" Line: 586 Column: - 167
"......" Line: 602 Column: - 155
"......" Line: 618 Column: - 156
"......"
"......" Line: 554 Column: - 163
"......" Line: 570 Column: - 156
"......" Line: 586 Column: - 167
"......" Line: 602 Column: - 155
"......" Line: 618 Column: - 156
"......"
Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.
Line: 538 Column: - 161
"......" Line: 554 Column: - 163
"......" Line: 570 Column: - 156
"......" Line: 586 Column: - 167
"......" Line: 602 Column: - 155
"......" Line: 618 Column: - 156
"......"
"......" Line: 554 Column: - 163
"......" Line: 570 Column: - 156
"......" Line: 586 Column: - 167
"......" Line: 602 Column: - 155
"......" Line: 618 Column: - 156
"......"
Attribute “"” not allowed on element “a” at this point.
Line: 538 Column: - 162
"......" Line: 554 Column: - 164
"......" Line: 570 Column: - 157
"......" Line: 586 Column: - 168
"......" Line: 602 Column: - 156
"......" Line: 618 Column: - 157
"......"
"......" Line: 554 Column: - 164
"......" Line: 570 Column: - 157
"......" Line: 586 Column: - 168
"......" Line: 602 Column: - 156
"......" Line: 618 Column: - 157
"......"
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Line: 652 Column: 4 - 73
"...> <form action="" method="post" name="calendar_form" id="calendar_form"> <d..."
"...> <form action="" method="post" name="calendar_form" id="calendar_form"> <d..."
Bad value “prev_date” for attribute “rel” on element “a”: The string “prev_date” is not a registered keyword.
Line: 656 Column: 35 - 80
"...d="centr"><a href="javascript:void(0);" rel="prev_date"></a></..."
"...d="centr"><a href="javascript:void(0);" rel="prev_date"></a></..."
The “align” attribute on the “td” element is obsolete. Use CSS instead.
Line: 657 Column: 90 - 65
"...></a></td> <td colspan="5" align="center" class="calendar_month_year"><span>..."
"...></a></td> <td colspan="5" align="center" class="calendar_month_year"><span>..."
Duplicate ID “centr”.
Line: 658 Column: 97 - 34
"...ember</td> <td class="next" id="centr"><a hre..."
"...ember</td> <td class="next" id="centr"><a hre..."
Bad value “next_date” for attribute “rel” on element “a”: The string “next_date” is not a registered keyword.
Line: 658 Column: 35 - 80
"...d="centr"><a href="javascript:void(0);" rel="next_date"></a></..."
"...d="centr"><a href="javascript:void(0);" rel="next_date"></a></..."
Bad value “cat_121” for attribute “rel” on element “a”: The string “cat_121” is not a registered keyword.
Line: 668 Column: 30 - 71
"...tr-event"><a class="catlist" rel="cat_121" href="#"><span>..."
"...tr-event"><a class="catlist" rel="cat_121" href="#"><span>..."
Bad value “cat_115” for attribute “rel” on element “a”: The string “cat_115” is not a registered keyword.
Line: 669 Column: 34 - 75
"...y-events"><a class="catlist" rel="cat_115" href="#"><span>..."
"...y-events"><a class="catlist" rel="cat_115" href="#"><span>..."
Bad value “cat_116” for attribute “rel” on element “a”: The string “cat_116” is not a registered keyword.
Line: 670 Column: 33 - 74
"...s-events"><a class="catlist" rel="cat_116" href="#"><span>..."
"...s-events"><a class="catlist" rel="cat_116" href="#"><span>..."
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Line: 892 Column: 1 - 7
"...</script> <style> inpu..." Line: 913 Column: 3 - 16
"... </div> <style media=> .rca..."
"...</script> <style> inpu..." Line: 913 Column: 3 - 16
"... </div> <style media=> .rca..."
Attribute value missing.
Line: 913 Column: - 16
"... <style media=> .rcaptcha_er..."
"... <style media=> .rcaptcha_er..."
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Line: 932 Column: 1 - 7
"...in.css"/> <style> #cc-n..."
"...in.css"/> <style> #cc-n..."
Warnings
Empty heading.
Line: 338 Column: 9 - 25
"...> <h1 class="logo"><a hre..."
"...> <h1 class="logo"><a hre..."
Attribute “"” is not serializable as XML 1.0.
Line: 538 Column: - 162
"......" Line: 554 Column: - 164
"......" Line: 570 Column: - 157
"......" Line: 586 Column: - 168
"......" Line: 602 Column: - 156
"......" Line: 618 Column: - 157
"......"
"......" Line: 554 Column: - 164
"......" Line: 570 Column: - 157
"......" Line: 586 Column: - 168
"......" Line: 602 Column: - 156
"......" Line: 618 Column: - 157
"......"
The first occurrence of ID “centr” was here.
Line: 656 Column: 11 - 34
"... <tr> <td class="prev" id="centr"><a hre..."
"... <tr> <td class="prev" id="centr"><a hre..."
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centr.org 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.
centr.org 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.