perimeterinstitute.ca Website Information

Daily Unique Visits: 33,766

Daily Page Views: 202,596

Income Per Day: $405

Estimated Value: $291,600

This website is located in Canada and is using following IP address 40.80.253.4. See the complete list of popular websites hosted in Canada.

perimeterinstitute.ca is registered under .CA top-level domain. Please check other sites in .CA zone.

Website perimeterinstitute.ca is using the following name servers:

dns2.rebel.ca
dns.rebel.ca

and is probably hosted by CLOUDFLARENET - Cloudflare, Inc., US. See the full list of other websites hosted by CLOUDFLARENET - Cloudflare, Inc., US.

The highest website perimeterinstitute.ca position in Alexa rank database was 37509 and the lowest rank position was 971867. Current position of perimeterinstitute.ca in Alexa rank database is 42475.

Desktop speed score of perimeterinstitute.ca (38/100) is better than the results of 13.38% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of perimeterinstitute.ca (70/100) is better than the results of 21.03% of other sites and means that the page is not mobile-friendly.

Mobile speed score of perimeterinstitute.ca (38/100) is better than the results of 16.76% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

perimeterinstitute.ca 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.

perimeterinstitute.ca 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: perimeterinstitute.ca
Registry Domain ID: D46824-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: www.rebel.ca
Updated Date: 2024-01-15T05:08:28Z
Creation Date: 2000-11-24T21:26:19Z
Registry Expiry Date: 2024-12-01T05:00:00Z
Registrar: Rebel.ca Corp.
Registrar IANA ID: not applicable
Registrar Abuse Contact Email: abuse@rebel.com
Registrar Abuse Contact Phone: +1.6132252000
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: REDACTED FOR PRIVACY
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: REDACTED FOR PRIVACY
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: REDACTED FOR PRIVACY
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 ask the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Other contacts 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 ask the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Other contacts 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 ask the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Other contacts of the queried domain name
Registry Billing ID: REDACTED FOR PRIVACY
Billing Name: REDACTED FOR PRIVACY
Billing Organization: REDACTED FOR PRIVACY
Billing Street: REDACTED FOR PRIVACY
Billing City: REDACTED FOR PRIVACY
Billing State/Province: REDACTED FOR PRIVACY
Billing Postal Code: REDACTED FOR PRIVACY
Billing Country: REDACTED FOR PRIVACY
Billing Phone: REDACTED FOR PRIVACY
Billing Phone Ext: REDACTED FOR PRIVACY
Billing Fax: REDACTED FOR PRIVACY
Billing Fax Ext: REDACTED FOR PRIVACY
Billing Email: Please ask the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Other contacts of the queried domain name
Name Server: drew.ns.cloudflare.com
Name Server: lucy.ns.cloudflare.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2024-10-18T20:12:44Z

perimeterinstitute.ca server information

Servers Location

perimeterinstitute.ca desktop page speed rank

Last tested: 2019-06-22

Desktop Speed Bad

38/100

perimeterinstitute.ca Desktop Speed Test Quick Summary

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perimeterinstitute.ca Desktop Resource Breakdown

Total Resources	71
Number of Hosts	13
Static Resources	58
JavaScript Resources	15
CSS Resources	7

perimeterinstitute.ca mobile page speed rank

Last tested: 2018-12-04

Mobile Speed Bad

38/100

perimeterinstitute.ca Mobile Speed Test Quick Summary

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perimeterinstitute.ca Mobile Resource Breakdown

Total Resources	73
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perimeterinstitute.ca mobile page usability

Last tested: 2018-12-04

Mobile Usability Medium

70/100

perimeterinstitute.ca Mobile Usability Test Quick Summary

priority - 24Use legible font sizes

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

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

CAREERS and 1 others render only 4 pixels tall (11 CSS pixels).

EN renders only 4 pixels tall (11 CSS pixels).

FR renders only 4 pixels tall (11 CSS pixels).

A renders only 3 pixels tall (8 CSS pixels).

CONNECT WITH US: renders only 4 pixels tall (10 CSS pixels).

VIDEO LIBRARY and 8 others render only 4 pixels tall (11 CSS pixels).

Home renders only 3 pixels tall (9 CSS pixels).

1 and 2 others render only 5 pixels tall (14 CSS pixels).

2 renders only 5 pixels tall (14 CSS pixels).

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2:00 pm and 7 others render only 4 pixels tall (11 CSS pixels).

| and 3 others render only 4 pixels tall (11 CSS pixels).

more and 1 others render only 4 pixels tall (11 CSS pixels).

COURSES renders only 6 pixels tall (15 CSS pixels).

for details of…rsity courses. and 1 others render only 5 pixels tall (14 CSS pixels).

courses page renders only 5 pixels tall (14 CSS pixels).

ARTS AND CULTURAL EVENTS renders only 6 pixels tall (15 CSS pixels).

Classical Worl…cription Sales renders only 5 pixels tall (14 CSS pixels).

| and 2 others render only 5 pixels tall (14 CSS pixels).

Order Tickets and 1 others render only 5 pixels tall (14 CSS pixels).

DISCOVER MORE…AND BIG IDEAS renders only 6 pixels tall (15 CSS pixels).

CHECK OUT THE…THE PERIMETER and 1 others render only 5 pixels tall (14 CSS pixels).

OPEN POSITIONS AT PERIMETER renders only 5 pixels tall (14 CSS pixels).

Privacy Policy and 6 others render only 3 pixels tall (9 CSS pixels).

· and 5 others render only 3 pixels tall (9 CSS pixels).

priority - 10Configure the viewport

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priority - 8Size tap targets appropriately

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The tap target <a href="#main-menu" class="element-invisi…ment-focusable">Jump to Navigation</a> is close to 1 other tap targets.

The tap target <a href="/about/careers" class="">Careers</a> and 2 others are close to other tap targets.

The tap target <a href="/" class="language-link active">EN</a> is close to 2 other tap targets.

The tap target <a href="/fr" class="language-link">FR</a> is close to 4 other tap targets.

The tap target <a id="text-size" href="#">A A</a> is close to 1 other tap targets.

The tap target <a href="https://perime…e/mailing-list" class="service-links-dialog">Connect with us via email</a> is close to 3 other tap targets.

The tap target <a href="http://twitter.com/perimeter" class="service-links-twitter">Visit Perimeter on Twitter</a> is close to 4 other tap targets.

The tap target <a href="http://www.fac…com/pioutreach" class="service-links-facebook">Visit PI Outreach on Facebook</a> is close to 5 other tap targets.

The tap target <a href="http://www.you…ser/PIOutreach" class="service-links-youtube">Visit PI Outreach on YouTube</a> is close to 5 other tap targets.

The tap target <a href="https://plus.g…80224135278443" class="service-links-google-plus">Visit Perimeter on Google+</a> is close to 5 other tap targets.

The tap target <a href="http://perimet…opup_news_feed" class="service-links-rss">Subscribe to RSS</a> is close to 4 other tap targets.

The tap target <a href="/about/about-perimeter">About</a> and 6 others are close to other tap targets.

The tap target <input id="edit-search-block-form--2" type="text" name="search_block_form" class="form-text"> is close to 2 other tap targets.

The tap target <input id="edit-submit" type="submit" name="op" class="form-submit"> is close to 3 other tap targets.

The tap target <a href="/">Home</a> is close to 6 other tap targets.

The tap target <a id="pauseOrPlay" href="#"></a> is close to 1 other tap targets.

The tap target <a href="#" class="">1</a> and 2 others are close to other tap targets.

The tap target <a href="#" class="activeSlide">2</a> is close to 4 other tap targets.

The tap target <a href="/seminar/tba-67">TBA</a> and 1 others are close to other tap targets.

The tap target <a href="research/seminars">more</a> is close to 1 other tap targets.

The tap target <a href="/research/conf…-and-workshops">conferences</a> is close to 1 other tap targets.

The tap target <a href="/outreach/arts-and-culture">Arts and Cultural Events</a> is close to 1 other tap targets.

The tap target <a href="http://perimet…cription-sales">Classical Worl…cription Sales</a> is close to 1 other tap targets.

The tap target <a href="/outreach/arts-and-culture">more</a> is close to 1 other tap targets.

The tap target <a href="/site/site-map">Site Map</a> and 4 others are close to other tap targets.

The tap target <a href="http://www.you…ser/PIOutreach"></a> and 1 others are close to other tap targets.

perimeterinstitute.ca HTML validation

Errors

Legacy doctype. Expected “<!DOCTYPE html>”.

Line: 2 Column: 1 - 50
"...<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd"> <html..."

Attribute “xmlns:content” not allowed here.

Line: 12 Column: 51 - 48
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" 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#"> <hea..."

Attribute “xmlns:dc” not allowed here.

Attribute “xmlns:foaf” not allowed here.

Attribute “xmlns:og” not allowed here.

Attribute “xmlns:rdfs” not allowed here.

Attribute “xmlns:sioc” not allowed here.

Attribute “xmlns:sioct” not allowed here.

Attribute “xmlns:skos” not allowed here.

Attribute “xmlns:xsd” not allowed here.

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

The “version” attribute on the “html” element is obsolete. You can safely omit it.

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: 14 Column: 49 - 51
"...LSchema#"> <head profile="http://www.w3.org/1999/xhtml/vocab"> <me..."

Duplicate ID “logo”.

Line: 77 Column: 4 - 49
"...logo"> <a href="/" title="Home" rel="home" id="logo"><img s..."

Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Line: 120 Column: 4 - 50
"... <li class="breadcrumb-0 first" id="metro_grey"><a hre..."

Stray end tag “ol”.

Line: 120 Column: 121 - 125
"...></a></li></ol> ..."

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Line: 146 Column: 1 - 7
"...endif]--> <style> <!--/..."

Attribute “about” not allowed on element “div” at this point.

Line: 171 Column: 5 - 161
"...ent"> <div id="node-11063" class="node node-slideshow-article node-promoted view-mode-full clearfix" about="/content/slideshow-1" typeof="sioc:Item foaf:Document"> ..."

Attribute “content” not allowed on element “span” at this point.

Line: 174 Column: 7 - 75
"... <span property="dc:title" content="" class="rdf-meta element-hidden"></span..." Line: 174 Column: 83 - 183
"...n"></span><span property="sioc:num_replies" content="0" datatype="xsd:integer" class="rdf-meta element-hidden"></span..."

Attribute “datatype” not allowed on element “span” at this point.

Line: 174 Column: 83 - 183
"...n"></span><span property="sioc:num_replies" content="0" datatype="xsd:integer" class="rdf-meta element-hidden"></span..."

Duplicate attribute “alt”.

Line: 179 Column: - 142
"...height="11" alt="Pause" title=..."

The “align” attribute on the “table” element is obsolete. Use CSS instead.

Line: 180 Column: 23 - 56
"...prevnext"><table align="right" class="pn_t"><tr><t..."

Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)

Line: 188 Column: - 13
"... <?php// if (isse..." Line: 204 Column: - 13
"... <?php// if (isse..." Line: 220 Column: - 13
"... <?php// if (isse..." Line: 236 Column: - 13
"... <?php// if (isse..."

Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)

Line: 190 Column: 4 - 35
"... <div id="field_images_captions"> <..." Line: 206 Column: 4 - 35
"... <div id="field_images_captions"> <..." Line: 222 Column: 4 - 35
"... <div id="field_images_captions"> <..." Line: 238 Column: 4 - 35
"... <div id="field_images_captions"> <..."

Duplicate ID “field_images_captions”.

Line: 206 Column: 4 - 35
"... <div id="field_images_captions"> <..." Line: 222 Column: 4 - 35
"... <div id="field_images_captions"> <..." Line: 238 Column: 4 - 35
"... <div id="field_images_captions"> <..."

Start tag “div” seen in “table”.

Line: 289 Column: 32 - 106
"...ar_table'> <div class="views-row views-row-1 views-row-odd views-row-first"> <..."

Cannot recover after last error. Any further errors will be ignored.

Line: 289 Column: 32 - 106
"...ar_table'> <div class="views-row views-row-1 views-row-odd views-row-first"> <..."

Warnings

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

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

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

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

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

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

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

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

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

The first occurrence of ID “logo” was here.

Line: 76 Column: 4 - 18
"... <div> <div id="logo"> <a..."

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

Line: 180 Column: 88 - 151
"... href="#"><img alt="previous" src="/files/previous_BTTN.png" border="0" /></a></..." Line: 180 Column: 219 - 274
"... href="#"><img alt="next" src="/files/next_BTTN.png" border="0" /></a></..."

The first occurrence of ID “field_images_captions” was here.

Line: 190 Column: 4 - 35
"... <div id="field_images_captions"> <..." Line: 190 Column: 4 - 35
"... <div id="field_images_captions"> <..." Line: 190 Column: 4 - 35
"... <div id="field_images_captions"> <..."

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perimeterinstitute.ca 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.

perimeterinstitute.ca 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.

PERIMETERINSTITUTE.CA Homepage | Perimeter Institute

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priority - 162Optimize images

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

Optimize the following images to reduce their size by 1.5MiB (72% reduction).

priority - 10Leverage 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.

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priority - 2Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

priority - 0Minify CSS

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priority - 156Optimize images

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

Optimize the following images to reduce their size by 1.5MiB (70% reduction).

priority - 15Leverage 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.

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priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking CSS resources. This causes a delay in rendering your page.

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priority - 3Minify JavaScript

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priority - 24Use legible font sizes

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

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priority - 10Configure the viewport

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perimeterinstitute.ca HTML validation

Errors

Legacy doctype. Expected “<!DOCTYPE html>”.

Attribute “xmlns:content” not allowed here.

Attribute “xmlns:dc” not allowed here.

Attribute “xmlns:foaf” not allowed here.

Attribute “xmlns:og” not allowed here.

Attribute “xmlns:rdfs” not allowed here.

Attribute “xmlns:sioc” not allowed here.

Attribute “xmlns:sioct” not allowed here.

Attribute “xmlns:skos” not allowed here.

Attribute “xmlns:xsd” not allowed here.

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

The “version” attribute on the “html” element is obsolete. You can safely omit it.

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.

Duplicate ID “logo”.

Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Stray end tag “ol”.

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Attribute “about” not allowed on element “div” at this point.

Attribute “content” not allowed on element “span” at this point.

Attribute “datatype” not allowed on element “span” at this point.

Duplicate attribute “alt”.

The “align” attribute on the “table” element is obsolete. Use CSS instead.

Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)

Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)

Duplicate ID “field_images_captions”.