perimeterinstitute.ca ▷ Homepage

Quick Summary

Online Status

Online

Server IP address resolved: Yes
Http response code: 200
Response time: 0.61 sec.
Last Checked: 04/25/2024

Perimeterinstitute.ca traffic volume is 1,971 unique daily visitors and their 5,716 pageviews. The web value rate of perimeterinstitute.ca is 101,543 USD. Each visitor makes around 3.10 page views on average.

By Alexa's traffic estimates perimeterinstitute.ca placed at 37,509 position over the world, while the largest amount of its visitors comes from United States, where it takes 98,985 place.

Perfect for perimeterinstitute.ca that their data center (provided by company company CLOUDFLARENET - Cloudflare, Inc., US) is located in United States, as that empowers most of the visitors to reduce the page load time. See the list of other web pages hosted by CLOUDFLARENET - Cloudflare, Inc., US.

Perimeterinstitute.ca registered under .CA top-level domain. Check other websites in .CA zone.

The last verification results, performed on (November 23, 2019) perimeterinstitute.ca show that perimeterinstitute.ca has an expired wildcard SSL certificate issued by GoDaddy.com, Inc. (expired on July 17, 2020). Click “Refresh” button for SSL Information at the Safety Information section. Check the list of websites using SSL certificates issued by GoDaddy.com, Inc..

In accordance with Google Safe Browsing, Google Safe Search, Symantec and Web of Trust perimeterinstitute.ca is pretty a safe domain.

Relying Google MobileFriendly test perimeterinstitute.ca is well optimized for mobile and tablet devices, however web page loading speed may be improved.

Perimeterinstitute.ca General Information

Global Rank

125,546

Average Load Time

1.92sec

Links In Count

799

Website Value

$94,900

Audience Geography. Where are perimeterinstitute.ca visitors located?

Country	Visitors
United States US	17.5%
Japan JP	16.9%
India IN	12.1%
Hong Kong HK	10.5%
Canada CA	7%
South Africa ZA	2.2%
Malaysia MY	1.4%
Nigeria NG	1.3%
Cameroon CM	1.1%
Other	29.9%

Country	Pageviews
Hong Kong HK	14.6%
India IN	13.7%
United States US	13.5%
Japan JP	11.6%
Canada CA	6.5%
South Africa ZA	4%
Nigeria NG	2.3%
Pakistan PK	1.5%
Malaysia MY	1.4%
Other	31.2%

Country	Rank
Hong Kong HK	6666
Cameroon CM	6824
South Africa ZA	26659
Canada CA	30379
Malaysia MY	33159
Nigeria NG	36668
India IN	46249
Japan JP	47281
Thailand TH	61483
Pakistan PK	64256
United States US	98985

Where do visitors go on perimeterinstitute.ca?

Subdomain	Pageviews
perimeterinstitute.ca	92.78%
landing.perimeterinstitute.ca	5.43%
other	1.78%

Subdomain	Pageviews per User
perimeterinstitute.ca	2.5
landing.perimeterinstitute.ca	1.4

Subdomain	Reach
perimeterinstitute.ca	95.83%
landing.perimeterinstitute.ca	10.55%

How popular is perimeterinstitute.ca?

Period	Global Rank	Global Rank Delta
past 3 months	125546	-69584
past month	117631	-28084
past week	163257	18259
yesterday	655430	502308

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	130702	-64789	39	70%	2.9	-5.788%
30	131099	-33231	39	30%	2.6	2%
7	135251	-12279	38	10%	4.6	40%
1	726640	580291	3	-92.04%	1	-65.616%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	131814	-76971	49	80%
30	120188	-28708	53	20%
7	191860	35383	3	-20.58%
1	552941	376125	1	-76.936%

Perimeterinstitute.ca Safety Information

Overview

Last Updated: 04/25/2024

Overall result - perimeterinstitute.ca is safe.

We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Last Updated: 03/25/2024

perimeterinstitute.ca is safe.

Norton ConnectSafe evaluates perimeterinstitute.ca for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 11/11/2016

perimeterinstitute.ca is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 01/09/2019

perimeterinstitute.ca is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

Site Advisor

Last Updated: 02/25/2021

perimeterinstitute.ca is safe.

McAfee assesses perimeterinstitute.ca for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze perimeterinstitute.ca for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/10/2019

perimeterinstitute.ca child safety is very good.

The WOT calculates reputation of the perimeterinstitute.ca. This reputation system receives ratings from users and information from third-party sources, assesses the perimeterinstitute.ca for safety features and confirms, whether perimeterinstitute.ca is suitable for children.

SSL Information

SSL Checker Tool

Domain	*.perimeterinstitute.ca
Issuer Organization	GoDaddy.com, Inc.
Issuer	Go Daddy Secure Certificate Authority - G2
Algorithm	RSA-SHA256
Valid form	07/17/2017
Expiration	07/17/2020
Signed	Certificate is not self signed
Additional Domains	*.perimeterinstitute.ca perimeterinstitute.ca

Perimeterinstitute.ca Server Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 13335
ASN Title: CLOUDFLARENET - Cloudflare, Inc., US

Last Update: 10/13/2023

ASN Whois

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 13335
ASName: CLOUDFLARENET
ASHandle: AS13335
RegDate: 2010-07-14
Updated: 2017-02-17
Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Ref: https://rdap.arin.net/registry/autnum/13335

OrgName: Cloudflare, Inc.
OrgId: CLOUD14
Address: 101 Townsend Street
City: San Francisco
StateProv: CA
PostalCode: 94107
Country: US
RegDate: 2010-07-09
Updated: 2017-02-17
Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Ref: https://rdap.arin.net/registry/entity/CLOUD14

OrgTechHandle: ADMIN2521-ARIN
OrgTechName: Admin
OrgTechPhone: +1-650-319-8930
OrgTechEmail: rir@cloudflare.com
OrgTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN

OrgAbuseHandle: ABUSE2916-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-650-319-8930
OrgAbuseEmail: abuse@cloudflare.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN

OrgNOCHandle: NOC11962-ARIN
OrgNOCName: NOC
OrgNOCPhone: +1-650-319-8930
OrgNOCEmail: noc@cloudflare.com
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN

RNOCHandle: NOC11962-ARIN
RNOCName: NOC
RNOCPhone: +1-650-319-8930
RNOCEmail: noc@cloudflare.com
RNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN

RTechHandle: ADMIN2521-ARIN
RTechName: Admin
RTechPhone: +1-650-319-8930
RTechEmail: rir@cloudflare.com
RTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN

RAbuseHandle: ABUSE2916-ARIN
RAbuseName: Abuse
RAbusePhone: +1-650-319-8930
RAbuseEmail: abuse@cloudflare.com
RAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

Perimeterinstitute.ca Domain Name Information

WHOIS

WHOIS Lookup Tool

Domain Whois

Domain Name: perimeterinstitute.ca
Registry Domain ID: D46824-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: www.rebel.ca
Updated Date: 2021-05-28T23:54:28Z
Creation Date: 2000-11-24T21:26:19Z
Registry Expiry Date: 2021-12-01T05:00:00Z
Registrar: Rebel.ca Corp.
Registrar IANA ID: not applicable
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Registry Registrant ID: 93376920-CIRA
Registrant Name: Ben Davies
Registrant Organization: Perimeter Institute
Registrant Street: 31 Caroline St. North
Registrant City: Waterloo
Registrant State/Province: ON
Registrant Postal Code: N2L2Y5
Registrant Country: CA
Registrant Phone: +1.5198834465
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: bdavies@perimeterinstitute.ca
Registry Admin ID: 89790213-CIRA
Admin Name: Jorge Gonzalez
Admin Organization: Perimeter Institute
Admin Street: 31 Caroline Street North
Admin City: Waterloo
Admin State/Province: ON
Admin Postal Code: N2L6B9
Admin Country: CA
Admin Phone: +1.5195697600
Admin Phone Ext: 6081
Admin Fax: +1.5195697611
Admin Fax Ext:
Admin Email: jgonzalez@perimeterinstitute.ca
Registry Tech ID: 89790213-CIRA
Tech Name: Jorge Gonzalez
Tech Organization: Perimeter Institute
Tech Street: 31 Caroline Street North
Tech City: Waterloo
Tech State/Province: ON
Tech Postal Code: N2L6B9
Tech Country: CA
Tech Phone: +1.5195697600
Tech Phone Ext: 6081
Tech Fax: +1.5195697611
Tech Fax Ext:
Tech Email: jgonzalez@perimeterinstitute.ca
Registry Billing ID:
Billing Name:
Billing Organization:
Billing Street:
Billing City:
Billing State/Province:
Billing Postal Code:
Billing Country:
Billing Phone:
Billing Phone Ext:
Billing Fax:
Billing Fax Ext:
Billing Email:
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: 2021-05-30T09:12:50Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
perimeterinstitute.ca	40.80.253.4	3600

Host	MX Record	Priority	TTL
perimeterinstitute.ca	ALT1.ASPMX.L.GOOGLE.COM	20	3600
perimeterinstitute.ca	ALT4.ASPMX.L.GOOGLE.COM	25	3600
perimeterinstitute.ca	ALT3.ASPMX.L.GOOGLE.COM	25	3600
perimeterinstitute.ca	ASPMX.L.GOOGLE.COM	10	3600
perimeterinstitute.ca	ALT2.ASPMX.L.GOOGLE.COM	20	3600

Host	NS Record	TTL
perimeterinstitute.ca	dns2.rebel.ca	3600
perimeterinstitute.ca	dns.rebel.ca	3600

Host	TXT Record	TTL
perimeterinstitute.ca	MS=ms79119458	3600
perimeterinstitute.ca	_globalsign-domain-verification=Jud5uGwQxQHG7FdoFM7qUMCNOuTYF9jBHMtmgUecUl	3600
perimeterinstitute.ca	81l1Xur	3600
perimeterinstitute.ca	MIC-123-SOF	3600
perimeterinstitute.ca	MS=ms43622443	3600
perimeterinstitute.ca	v=spf1 a mx ip4:66.97.27.10 ip4:107.20.210.250 ip4:52.1.14.157 ip4:206.252.154.118 include:clearcompany.com include:_spf.google.com include:2636016.spf08.hubspotemail.net include:_spf.salesforce.com ~all	3600

dns.rebel.ca
TTL: 86400
Email address: noc.rebel.ca
Serial: 3
Refresh: 10800
Retry: 3600
Expire: 604800
Minimum: 3600

Perimeterinstitute.ca HTML Validation

HTML Validation Tool

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”.

Start tag “div” seen in “table”.

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

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.

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

The first occurrence of ID “field_images_captions” was here.

Perimeterinstitute.ca Desktop Insights

Last tested: 06/22/2019

Desktop

Desktop Speed

38%

Optimize images

Leverage browser caching

Minify JavaScript

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

Minify CSS

Desktop Resource Breakdown

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

Perimeterinstitute.ca Mobile Insights

Last tested: 12/04/2018

Mobile

Mobile Usability

70%

Use legible font sizes

Configure the viewport

Size tap targets appropriately

Mobile Speed

38%

Optimize images

Leverage browser caching

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

Minify JavaScript

Minify CSS

Mobile Resource Breakdown

Total Resources	73
Number of Hosts	14
Static Resources	60
JavaScript Resources	17
CSS Resources	7

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Perimeterinstitute.ca Homepage | Perimeter Institute

From quarks to black holes & beyond, explore free physics lectures, seminars, & courses for teachers & students from high school to post university.

Quick Summary

Perimeterinstitute.ca General Information

Perimeterinstitute.ca Safety Information

Perimeterinstitute.ca Server Information

Perimeterinstitute.ca Domain Name Information

Perimeterinstitute.ca HTML Validation

Perimeterinstitute.ca Desktop Insights

Perimeterinstitute.ca Mobile Insights

Perimeterinstitute.ca Nearest Competitors

Perimeterinstitute.ca Typos