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nrich.maths.org Open in urlscan Pro
131.111.18.195  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://nrich.maths.org/
Effective URL: https://nrich.maths.org/frontpage
Submission: On April 11 via manual from US — Scanned from GB
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 12 IPs in 3 countries across 11 domains to perform 39 HTTP transactions. The main IP is 131.111.18.195, located in Cambridge, United Kingdom and belongs to JANET Jisc Services Limited, GB. The main domain is nrich.maths.org.
TLS certificate: Issued by R3 on March 4th 2024. Valid for: 3 months.
This is the only time nrich.maths.org was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

21    131.111.18.195 (Cambridge, United Kingdom)

ASN786 (JANET Jisc Services Limited, GB)
PTR: mmpssl3.damtp.cam.ac.uk
nrich.maths.org
1    2a00:1450:4001:80e::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
ajax.googleapis.com
5    2a00:1450:4001:80b::2008 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.googletagmanager.com
2    2a00:1450:4001:809::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
fonts.googleapis.com
2    2a00:1450:4001:813::200e (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.google-analytics.com
3    2a00:1450:4001:829::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
fonts.gstatic.com
2    2a03:2880:f083:9:face:b00c:0:3 (Frankfurt am Main, Germany)

ASN32934 (FACEBOOK, US)
connect.facebook.net
2    2001:4860:4802:32::36 (United States)

ASN15169 (GOOGLE, US)
region1.google-analytics.com
1    142.250.186.98 (United States)

ASN15169 (GOOGLE, US)
PTR: fra24s06-in-f2.1e100.net
www.googleadservices.com
1    142.250.186.130 (United States)

ASN15169 (GOOGLE, US)
PTR: fra24s07-in-f2.1e100.net
googleads.g.doubleclick.net
1    142.250.185.164 (United States)

ASN15169 (GOOGLE, US)
PTR: fra16s51-in-f4.1e100.net
www.google.com
1    142.250.186.35 (United States)

ASN15169 (GOOGLE, US)
PTR: fra24s04-in-f3.1e100.net
www.google.co.uk
1    2a03:2880:f176:84:face:b00c:0:25de (Frankfurt am Main, Germany)

ASN32934 (FACEBOOK, US)
www.facebook.com
Apex Domain
Subdomains		 Transfer
21 maths.org
nrich.maths.org
777 KB
5 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 114
432 KB
4 google-analytics.com
www.google-analytics.com — Cisco Umbrella Rank: 99
region1.google-analytics.com — Cisco Umbrella Rank: 1879
21 KB
3 gstatic.com
fonts.gstatic.com
333 KB
3 googleapis.com
ajax.googleapis.com — Cisco Umbrella Rank: 746
fonts.googleapis.com — Cisco Umbrella Rank: 116
35 KB
2 facebook.net
connect.facebook.net — Cisco Umbrella Rank: 248
70 KB
1 facebook.com
www.facebook.com — Cisco Umbrella Rank: 98
270 B
1 google.co.uk
www.google.co.uk — Cisco Umbrella Rank: 3035
64 B
1 google.com
www.google.com — Cisco Umbrella Rank: 5
24 B
1 doubleclick.net
googleads.g.doubleclick.net — Cisco Umbrella Rank: 69
24 B
1 googleadservices.com
www.googleadservices.com — Cisco Umbrella Rank: 163
2 KB
39 11
Domain Requested by
21 nrich.maths.org 2 redirects nrich.maths.org
5 www.googletagmanager.com nrich.maths.org
www.googletagmanager.com
3 fonts.gstatic.com fonts.googleapis.com
2 region1.google-analytics.com www.googletagmanager.com
2 connect.facebook.net nrich.maths.org
connect.facebook.net
2 www.google-analytics.com nrich.maths.org
www.google-analytics.com
2 fonts.googleapis.com nrich.maths.org
1 www.facebook.com nrich.maths.org
1 www.google.co.uk nrich.maths.org
1 www.google.com 1 redirects
1 googleads.g.doubleclick.net 1 redirects
1 www.googleadservices.com www.googletagmanager.com
1 ajax.googleapis.com nrich.maths.org
39 13

This site contains links to these domains. Also see Links.

Domain
www.maths.cam.ac.uk
www.eventbrite.co.uk
twitter.com
www.facebook.com
mmp.maths.org
www.cam.ac.uk
Subject Issuer Validity Valid
nrich.maths.org
R3		 2024-03-04 -
2024-06-02		 3 months crt.sh
upload.video.google.com
GTS CA 1C3		 2024-03-04 -
2024-05-27		 3 months crt.sh
*.google-analytics.com
GTS CA 1C3		 2024-03-04 -
2024-05-27		 3 months crt.sh
*.gstatic.com
GTS CA 1C3		 2024-03-04 -
2024-05-27		 3 months crt.sh
*.facebook.com
DigiCert SHA2 High Assurance Server CA		 2024-01-19 -
2024-04-18		 3 months crt.sh
*.googleadservices.com
GTS CA 1C3		 2024-03-04 -
2024-05-27		 3 months crt.sh

This page contains 1 frames:

Primary Page: https://nrich.maths.org/frontpage
Frame ID: AA5EF5836C2A60204DB2868055F50FDB
Requests: 46 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

NRICH

Page URL History Show full URLs

  1. http://nrich.maths.org/ HTTP 307
    https://nrich.maths.org/ HTTP 302
    https://nrich.maths.org/public/ HTTP 302
    https://nrich.maths.org/frontpage Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • ([\d.]+)?/mathjax\.js
Overall confidence: 100%
Detected patterns
  • //connect\.facebook\.([a-z]+)/[^/]*/[a-z]*\.js
Overall confidence: 100%
Detected patterns
  • google-analytics\.com/(?:ga|urchin|analytics)\.js
Overall confidence: 100%
Detected patterns
  • <link[^>]* href=[^>]+fonts\.(?:googleapis|google)\.com
Overall confidence: 100%
Detected patterns
  • googletagmanager\.com/ns\.html[^>]+></iframe>
  • <!-- (?:End )?Google Tag Manager -->
  • googletagmanager\.com/gtm\.js
  • googletagmanager\.com/gtag/js
Overall confidence: 100%
Detected patterns
  • /([\d.]+)/jquery(?:\.min)?\.js
  • jquery.*\.js(?:\?ver(?:sion)?=([\d.]+))?

Page Statistics

39
Requests

97 %
HTTPS

62 %
IPv6

11
Domains

13
Subdomains

12
IPs

3
Countries

1670 kB
Transfer

9108 kB
Size

7
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. http://nrich.maths.org/ HTTP 307
    https://nrich.maths.org/ HTTP 302
    https://nrich.maths.org/public/ HTTP 302
    https://nrich.maths.org/frontpage Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 41
  • https://googleads.g.doubleclick.net/pagead/viewthroughconversion/11388054587/?random=1591447555&cv=11&fst=1712807946548&bg=ffffff&guid=ON&async=1&gtm=45be4480v9170069739z89169459556za201&gcd=13l3lPl2l1&dma_cps=sypham&dma=1&u_w=800&u_h=600&url=https%3A%2F%2Fnrich.maths.org%2Ffrontpage&label=92f9CPnAkvQYELvYn7Yq&hn=www.googleadservices.com&frm=0&tiba=NRICH&value=0&npa=1&pscdl=noapi&auid=572708598.1712807946&uaa=x86&uab=64&uafvl=Google%2520Chrome%3B123.0.6312.105%7CNot%253AA-Brand%3B8.0.0.0%7CChromium%3B123.0.6312.105&uamb=0&uam=&uap=Win32&uapv=10.0.0&uaw=0&fdr=SA&fmt=3&ct_cookie_present=false&sscte=1&crd=COG9sQIIscGxAgiwwbECCLnBsQIIl8GxAg&eitems=ChAI8PHYsAYQuNSH0reg_J0REh0AJiezvAAToY90YGQEngYT-D84VxAoX8TQpxTc1Q&pscrd=IhMIi_ju6aK5hQMVG42DBx3d0wFKMgIIAzICCAQyAggHMgIICDICCAkyAggKMgIIAjICCAs6GGh0dHBzOi8vbnJpY2gubWF0aHMub3JnLw HTTP 302
  • https://www.google.com/pagead/1p-conversion/11388054587/?random=1591447555&cv=11&fst=1712807946548&bg=ffffff&guid=ON&async=1&gtm=45be4480v9170069739z89169459556za201&gcd=13l3lPl2l1&dma_cps=sypham&dma=1&u_w=800&u_h=600&url=https%3A%2F%2Fnrich.maths.org%2Ffrontpage&label=92f9CPnAkvQYELvYn7Yq&hn=www.googleadservices.com&frm=0&tiba=NRICH&value=0&npa=1&pscdl=noapi&auid=572708598.1712807946&uaa=x86&uab=64&uafvl=Google%2520Chrome%3B123.0.6312.105%7CNot%253AA-Brand%3B8.0.0.0%7CChromium%3B123.0.6312.105&uamb=0&uam=&uap=Win32&uapv=10.0.0&uaw=0&fdr=SA&fmt=3&ct_cookie_present=false&sscte=1&crd=COG9sQIIscGxAgiwwbECCLnBsQIIl8GxAg&pscrd=IhMIi_ju6aK5hQMVG42DBx3d0wFKMgIIAzICCAQyAggHMgIICDICCAkyAggKMgIIAjICCAs6GGh0dHBzOi8vbnJpY2gubWF0aHMub3JnLw&is_vtc=1&cid=CAQSGwB7FLtqxBWtyiXXPfgU97cKUMevYW4YcIRhZQ&eitems=ChAI8PHYsAYQuNSH0reg_J0REh0AJiezvEcgpE2D2AwUD42huiYOPyvLZ7Y3PojSmg&random=2144336772 HTTP 302
  • https://www.google.co.uk/pagead/1p-conversion/11388054587/?random=1591447555&cv=11&fst=1712807946548&bg=ffffff&guid=ON&async=1&gtm=45be4480v9170069739z89169459556za201&gcd=13l3lPl2l1&dma_cps=sypham&dma=1&u_w=800&u_h=600&url=https%3A%2F%2Fnrich.maths.org%2Ffrontpage&label=92f9CPnAkvQYELvYn7Yq&hn=www.googleadservices.com&frm=0&tiba=NRICH&value=0&npa=1&pscdl=noapi&auid=572708598.1712807946&uaa=x86&uab=64&uafvl=Google%2520Chrome%3B123.0.6312.105%7CNot%253AA-Brand%3B8.0.0.0%7CChromium%3B123.0.6312.105&uamb=0&uam=&uap=Win32&uapv=10.0.0&uaw=0&fdr=SA&fmt=3&ct_cookie_present=false&sscte=1&crd=COG9sQIIscGxAgiwwbECCLnBsQIIl8GxAg&pscrd=IhMIi_ju6aK5hQMVG42DBx3d0wFKMgIIAzICCAQyAggHMgIICDICCAkyAggKMgIIAjICCAs6GGh0dHBzOi8vbnJpY2gubWF0aHMub3JnLw&is_vtc=1&cid=CAQSGwB7FLtqxBWtyiXXPfgU97cKUMevYW4YcIRhZQ&eitems=ChAI8PHYsAYQuNSH0reg_J0REh0AJiezvEcgpE2D2AwUD42huiYOPyvLZ7Y3PojSmg&random=2144336772&ipr=y

39 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request frontpage
nrich.maths.org/
Redirect Chain
  • http://nrich.maths.org/
  • https://nrich.maths.org/
  • https://nrich.maths.org/public/
  • https://nrich.maths.org/frontpage
27 KB
7 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
102a4f7d6e94e0cd3081a5718055a28163d7f835c9f1b49daddf0064d0f22d25

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
accept-language
en-GB,en;q=0.9

Response headers

Connection
Keep-Alive
Content-Encoding
gzip
Content-Length
6715
Content-Type
text/html; charset=UTF-8
Date
Thu, 11 Apr 2024 03:59:05 GMT
Keep-Alive
timeout=5, max=98
Server
Apache/2.4.41 (Ubuntu)
Vary
Accept-Encoding

Redirect headers

Connection
Keep-Alive
Content-Length
0
Content-Type
text/html; charset=UTF-8
Date
Thu, 11 Apr 2024 03:59:05 GMT
Keep-Alive
timeout=5, max=99
Location
/frontpage
Server
Apache/2.4.41 (Ubuntu)
ce16afe5a2a9d8ba18f658c16665194d.css
nrich.maths.org/cache/ 		28 KB
7 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://nrich.maths.org/cache/ce16afe5a2a9d8ba18f658c16665194d.css
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
b4362387d192f09c36388b143c4487a8d2014885da769fdefa079c6b075ad91b

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:05 GMT
Content-Encoding
gzip
Last-Modified
Thu, 11 Apr 2024 03:59:05 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
W/"704e-615ca2d2cc49b-gzip"
Vary
Accept-Encoding
Content-Type
text/css
Cache-Control
max-age=604800
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=97
Content-Length
7093
Expires
Thu, 18 Apr 2024 03:59:05 GMT
jquery.min.js
ajax.googleapis.com/ajax/libs/jquery/1.7.1/ 		92 KB
33 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:80e::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
88171413fc76dda23ab32baa17b11e4fff89141c633ece737852445f1ba6c1bd
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Sat, 06 Apr 2024 01:22:43 GMT
content-encoding
gzip
x-content-type-options
nosniff
age
441382
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/hosted-libraries-pushers
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
33333
x-xss-protection
0
last-modified
Tue, 03 Mar 2020 19:15:00 GMT
server
sffe
cross-origin-opener-policy
same-origin; report-to="hosted-libraries-pushers"
vary
Accept-Encoding
report-to
{"group":"hosted-libraries-pushers","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/hosted-libraries-pushers"}]}
content-type
text/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
public, max-age=31536000, stale-while-revalidate=2592000
accept-ranges
bytes
timing-allow-origin
*
expires
Sun, 06 Apr 2025 01:22:43 GMT
MathJax.js
nrich.maths.org/javascript/MathJax/ 		49 KB
15 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://nrich.maths.org/javascript/MathJax/MathJax.js?config=TeX-AMS_HTML
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
ae01dc58eae7a3d3045e38549c8358cb6df5d6af4648f9aec601e9627ace0582

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:05 GMT
Content-Encoding
gzip
Last-Modified
Sun, 29 Oct 2023 09:08:56 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"c4eb-608d74572e170-gzip"
Vary
Accept-Encoding
Content-Type
application/javascript
Cache-Control
max-age=604800
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=96
Content-Length
14912
Expires
Thu, 18 Apr 2024 03:59:05 GMT
2c7ebbe51362fc6db85995e3d3b5b9d5.js
nrich.maths.org/cache/ 		3 KB
1 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://nrich.maths.org/cache/2c7ebbe51362fc6db85995e3d3b5b9d5.js
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
d5115f26f888623ab8f009d0f05d680452127674834d901ae81154dcfebde5c3

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:05 GMT
Content-Encoding
gzip
Last-Modified
Thu, 11 Apr 2024 03:59:05 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
W/"c08-615ca2d2cd43b-gzip"
Vary
Accept-Encoding
Content-Type
application/javascript
Cache-Control
max-age=604800
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=100
Content-Length
982
Expires
Thu, 18 Apr 2024 03:59:05 GMT
js
www.googletagmanager.com/gtag/ 		253 KB
89 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.googletagmanager.com/gtag/js?id=G-J6SPK1E9FZ
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:80b::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
68478bedd2386c01024f66753c72013de9b97d004729e00389bcee6329855ae5
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Thu, 11 Apr 2024 03:59:06 GMT
content-encoding
br
strict-transport-security
max-age=31536000; includeSubDomains
server
Google Tag Manager
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
private, max-age=900
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
access-control-allow-headers
Cache-Control
content-length
90444
x-xss-protection
0
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
expires
Thu, 11 Apr 2024 03:59:06 GMT
css2
fonts.googleapis.com/ 		5 KB
1 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://fonts.googleapis.com/css2?family=PT+Sans:ital,wght@0,400;0,700;1,400;1,700&display=swap
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:809::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
d0d9388b18d692e5b4cae89f224558a3ec8a98b80fc623dd7582ae43398ebed4
Security Headers
Name Value
Strict-Transport-Security max-age=31536000
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

strict-transport-security
max-age=31536000
date
Thu, 11 Apr 2024 03:59:05 GMT
content-encoding
gzip
x-content-type-options
nosniff
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
x-xss-protection
0
last-modified
Thu, 11 Apr 2024 03:31:32 GMT
server
ESF
cross-origin-opener-policy
same-origin-allow-popups
x-frame-options
SAMEORIGIN
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
private, max-age=86400, stale-while-revalidate=604800
timing-allow-origin
*
link
<https://fonts.gstatic.com>; rel=preconnect; crossorigin
expires
Thu, 11 Apr 2024 03:59:05 GMT
css2
fonts.googleapis.com/ 		696 B
537 B 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:809::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
bd67d4553dc3fc3f51d3e6dd50fbb3117e16cf702f0ae0294d84a4eaefc80081
Security Headers
Name Value
Strict-Transport-Security max-age=31536000
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

strict-transport-security
max-age=31536000
date
Thu, 11 Apr 2024 03:59:05 GMT
content-encoding
gzip
x-content-type-options
nosniff
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
x-xss-protection
0
last-modified
Thu, 11 Apr 2024 03:59:05 GMT
server
ESF
cross-origin-opener-policy
same-origin-allow-popups
x-frame-options
SAMEORIGIN
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
private, max-age=86400, stale-while-revalidate=604800
timing-allow-origin
*
link
<https://fonts.gstatic.com>; rel=preconnect; crossorigin
expires
Thu, 11 Apr 2024 03:59:05 GMT
University_of_Cambridge_logo_white_600.png
nrich.maths.org/images/ 		28 KB
29 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://nrich.maths.org/images/University_of_Cambridge_logo_white_600.png
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
82fed1512a072ca6a7ec0cd914fef2eb23b480c3d7800a1018e1d16b524d082e

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:05 GMT
Last-Modified
Sun, 29 Oct 2023 09:19:02 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"70f6-608d76995feb9"
Content-Type
image/png
Cache-Control
max-age=31536000, public
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=100
Content-Length
28918
Expires
Thu, 18 Apr 2024 03:59:05 GMT
nrich-logo_white.svg
nrich.maths.org/images/ 		8 KB
3 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://nrich.maths.org/images/nrich-logo_white.svg
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
df62dc02023879a5bcd89620812ae31940150312c74d777789ee0082e993c1a4

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:05 GMT
Content-Encoding
gzip
Last-Modified
Sun, 29 Oct 2023 09:19:02 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"1fa1-608d769960e59-gzip"
Vary
Accept-Encoding
Content-Type
image/svg+xml
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=100
Content-Length
2963
iStock-1488833714.jpg
nrich.maths.org/images/stock/ 		97 KB
98 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://nrich.maths.org/images/stock/iStock-1488833714.jpg
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
ec8c8cdba3af79240c8e09488799f7e84c3a318a84e9d0d631cb291ae8c2f5fa

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:05 GMT
Last-Modified
Fri, 10 Nov 2023 16:15:14 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"184f1-609cea024897d"
Content-Type
image/jpeg
Cache-Control
max-age=31536000, public
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=99
Content-Length
99569
Expires
Thu, 18 Apr 2024 03:59:05 GMT
iStock-1459826558.jpg
nrich.maths.org/images/stock/ 		97 KB
97 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://nrich.maths.org/images/stock/iStock-1459826558.jpg
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
fd78e0cfb4f720edae739470fe5ac81b14d35986cc7205d37aa2e65ebf5f5c41

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:06 GMT
Last-Modified
Fri, 10 Nov 2023 16:15:14 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"183ff-609cea024897d"
Content-Type
image/jpeg
Cache-Control
max-age=31536000, public
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=99
Content-Length
99327
Expires
Thu, 18 Apr 2024 03:59:06 GMT
iStock-525409417.jpg
nrich.maths.org/images/stock/ 		181 KB
181 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://nrich.maths.org/images/stock/iStock-525409417.jpg
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
17b2e177737625f68914f5572734ff8f7b72f175ba49daa691a41f133ad240f9

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:06 GMT
Last-Modified
Fri, 10 Nov 2023 16:15:14 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"2d349-609cea024991d"
Content-Type
image/jpeg
Cache-Control
max-age=31536000, public
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=99
Content-Length
185161
Expires
Thu, 18 Apr 2024 03:59:06 GMT
iStock-1278978518.jpg
nrich.maths.org/images/stock/ 		176 KB
176 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://nrich.maths.org/images/stock/iStock-1278978518.jpg
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
ea95dd68f030784dcef82da05d73bf9d0c6840657fe6527f6339a32a7d60d20c

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:06 GMT
Last-Modified
Fri, 10 Nov 2023 16:15:14 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"2c024-609cea02479dd"
Content-Type
image/jpeg
Cache-Control
max-age=31536000, public
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=100
Content-Length
180260
Expires
Thu, 18 Apr 2024 03:59:06 GMT
twitter-x_white.png
nrich.maths.org/images/ 		4 KB
4 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://nrich.maths.org/images/twitter-x_white.png
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
505c5fb3bc4469ad778c30df5380c5eb1fef4dc2d264aea0d51c6a4ac7c8469b

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:06 GMT
Last-Modified
Sun, 29 Oct 2023 09:19:02 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"1011-608d769964cd9"
Content-Type
image/png
Cache-Control
max-age=31536000, public
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=94
Content-Length
4113
Expires
Thu, 18 Apr 2024 03:59:06 GMT
facebook-logo.png
nrich.maths.org/images/ 		2 KB
3 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://nrich.maths.org/images/facebook-logo.png
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
d82351a2e4dc593b4501e41a0ccf7252ac1b8c97a0ed102c30f51d969162f8a0

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:06 GMT
Last-Modified
Thu, 16 Nov 2023 15:16:25 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"99b-60a4680d067b2"
Content-Type
image/png
Cache-Control
max-age=31536000, public
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=98
Content-Length
2459
Expires
Thu, 18 Apr 2024 03:59:06 GMT
2023.js
nrich.maths.org/javascript/ 		3 KB
1 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://nrich.maths.org/javascript/2023.js
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
962f73efd5f2d0c073f335f997e5eaa38eb2633be211026742b2e56dd6a802a8

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:06 GMT
Content-Encoding
gzip
Last-Modified
Sat, 11 Nov 2023 10:55:42 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"ad5-609de473927ef-gzip"
Vary
Accept-Encoding
Content-Type
application/javascript
Cache-Control
max-age=604800
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=95
Content-Length
921
Expires
Thu, 18 Apr 2024 03:59:06 GMT
gtm.js
www.googletagmanager.com/ 		237 KB
85 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.googletagmanager.com/gtm.js?id=GTM-KT79Q7XR
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:80b::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
0dd5d4975d38e9f02256030a9772dee43cf7ab403e46198c980f127c297514dd
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Thu, 11 Apr 2024 03:59:06 GMT
content-encoding
br
strict-transport-security
max-age=31536000; includeSubDomains
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
86658
x-xss-protection
0
last-modified
Thu, 11 Apr 2024 03:00:00 GMT
server
Google Tag Manager
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
private, max-age=900
access-control-allow-credentials
true
access-control-allow-headers
Cache-Control
expires
Thu, 11 Apr 2024 03:59:06 GMT
TeX-AMS_HTML.js
nrich.maths.org/javascript/MathJax/config/ 		156 KB
45 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://nrich.maths.org/javascript/MathJax/config/TeX-AMS_HTML.js
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/javascript/MathJax/MathJax.js?config=TeX-AMS_HTML
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
e168657712477b6c55eadbf911dab0ff2556a6dc744a40d38389de4af17f4ae3

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:06 GMT
Content-Encoding
gzip
Last-Modified
Sun, 29 Oct 2023 09:08:56 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"26eff-608d7457300b0-gzip"
Vary
Accept-Encoding
Content-Type
application/javascript
Cache-Control
max-age=604800
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=97
Content-Length
45392
Expires
Thu, 18 Apr 2024 03:59:06 GMT
analytics.js
www.google-analytics.com/ 		52 KB
21 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.google-analytics.com/analytics.js
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:813::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
de36e50194320a7d3ef1ace9bd34a875a8bd458b253c061979dd628e9bf49afd
Security Headers
Name Value
Strict-Transport-Security max-age=10886400; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

strict-transport-security
max-age=10886400; includeSubDomains; preload
content-encoding
gzip
x-content-type-options
nosniff
date
Thu, 11 Apr 2024 03:38:42 GMT
last-modified
Tue, 12 Dec 2023 18:09:08 GMT
server
Golfe2
age
1224
vary
Accept-Encoding
content-type
text/javascript
cache-control
public, max-age=7200
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
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Response headers

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Thu, 11 Apr 2024 03:59:06 GMT
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Response headers

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Thu, 11 Apr 2024 03:59:06 GMT
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Requested by
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sec-ch-ua
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Thu, 11 Apr 2024 03:59:06 GMT
content-encoding
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strict-transport-security
max-age=31536000; includeSubDomains
server
Google Tag Manager
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Full URL
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Response headers

pragma
no-cache
date
Thu, 11 Apr 2024 03:59:07 GMT
content-security-policy
script-src 'none'; object-src 'none'
x-content-type-options
nosniff
server
cafe
content-type
image/gif
p3p
policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
cache-control
no-cache, no-store, must-revalidate
cross-origin-resource-policy
cross-origin
timing-allow-origin
*
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
42
x-xss-protection
0
expires
Fri, 01 Jan 1990 00:00:00 GMT

Redirect headers

pragma
no-cache
date
Thu, 11 Apr 2024 03:59:07 GMT
content-security-policy
script-src 'none'; object-src 'none'
x-content-type-options
nosniff
server
cafe
p3p
policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
location
https://www.google.co.uk/pagead/1p-conversion/11388054587/?random=1591447555&cv=11&fst=1712807946548&bg=ffffff&guid=ON&async=1&gtm=45be4480v9170069739z89169459556za201&gcd=13l3lPl2l1&dma_cps=sypham&dma=1&u_w=800&u_h=600&url=https%3A%2F%2Fnrich.maths.org%2Ffrontpage&label=92f9CPnAkvQYELvYn7Yq&hn=www.googleadservices.com&frm=0&tiba=NRICH&value=0&npa=1&pscdl=noapi&auid=572708598.1712807946&uaa=x86&uab=64&uafvl=Google%2520Chrome%3B123.0.6312.105%7CNot%253AA-Brand%3B8.0.0.0%7CChromium%3B123.0.6312.105&uamb=0&uam=&uap=Win32&uapv=10.0.0&uaw=0&fdr=SA&fmt=3&ct_cookie_present=false&sscte=1&crd=COG9sQIIscGxAgiwwbECCLnBsQIIl8GxAg&pscrd=IhMIi_ju6aK5hQMVG42DBx3d0wFKMgIIAzICCAQyAggHMgIICDICCAkyAggKMgIIAjICCAs6GGh0dHBzOi8vbnJpY2gubWF0aHMub3JnLw&is_vtc=1&cid=CAQSGwB7FLtqxBWtyiXXPfgU97cKUMevYW4YcIRhZQ&eitems=ChAI8PHYsAYQuNSH0reg_J0REh0AJiezvEcgpE2D2AwUD42huiYOPyvLZ7Y3PojSmg&random=2144336772&ipr=y
content-type
image/gif
cache-control
no-cache, no-store, must-revalidate
cross-origin-resource-policy
cross-origin
timing-allow-origin
*
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
42
x-xss-protection
0
expires
Fri, 01 Jan 1990 00:00:00 GMT
/
www.facebook.com/tr/ 		0
270 B 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://www.facebook.com/tr/?id=325410376964089&ev=PageView&dl=https%3A%2F%2Fnrich.maths.org%2Ffrontpage&rl=&if=false&ts=1712807946861&sw=800&sh=600&v=2.9.153&r=stable&ec=0&o=4126&fbp=fb.1.1712807946860.598499627&ler=empty&cdl=API_unavailable&it=1712807946728&coo=false&rqm=GET
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a03:2880:f176:84:face:b00c:0:25de Frankfurt am Main, Germany, ASN32934 (FACEBOOK, US),
Reverse DNS
Software
proxygen-bolt /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-fb-connection-quality
GOOD; q=0.7, rtt=51, rtx=0, c=10, mss=1294, tbw=2765, tp=-1, tpl=-1, uplat=0, ullat=-1
strict-transport-security
max-age=31536000; includeSubDomains
date
Thu, 11 Apr 2024 03:59:06 GMT
server
proxygen-bolt
content-type
text/plain
access-control-allow-origin
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
content-length
0
favicon.ico
nrich.maths.org/ 		2 KB
3 KB 		Other
General
Check archive.org
Download Go to
Full URL
https://nrich.maths.org/favicon.ico
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_256_GCM
Server
131.111.18.195 Cambridge, United Kingdom, ASN786 (JANET Jisc Services Limited, GB),
Reverse DNS
mmpssl3.damtp.cam.ac.uk
Software
Apache/2.4.41 (Ubuntu) /
Resource Hash
1247baed92515448c3652cb6d999f3d37b4d61f9fb6d4ab39107d9bdda18e4ce

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/frontpage
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Thu, 11 Apr 2024 03:59:07 GMT
Content-Encoding
gzip
Last-Modified
Sun, 29 Oct 2023 09:19:02 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"9bb-608d769960e59-gzip"
Vary
Accept-Encoding
Content-Type
image/vnd.microsoft.icon
Cache-Control
max-age=31536000, public
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=98
Content-Length
2514
collect
region1.google-analytics.com/g/ 		0
54 B 		Ping
General
Check archive.org
Download Go to
Full URL
https://region1.google-analytics.com/g/collect?v=2&tid=G-J6SPK1E9FZ&gtm=45je4480h1v9115857644z89169459556za200&_p=1712807945807&gcd=13l3l3l2l1&npa=1&dma_cps=sypham&dma=1&cid=1337149767.1712807946&ul=en-us&sr=800x600&uaa=x86&uab=64&uafvl=Google%2520Chrome%3B123.0.6312.105%7CNot%253AA-Brand%3B8.0.0.0%7CChromium%3B123.0.6312.105&uamb=0&uam=&uap=Win32&uapv=10.0.0&uaw=0&pscdl=noapi&_s=2&sid=1712807946&sct=1&seg=0&dl=https%3A%2F%2Fnrich.maths.org%2Ffrontpage&dt=NRICH&en=contentView&_et=2&tfd=6000
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=G-J6SPK1E9FZ
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2001:4860:4802:32::36 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://nrich.maths.org/
accept-language
en-GB,en;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

pragma
no-cache
date
Thu, 11 Apr 2024 03:59:11 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://nrich.maths.org
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
0
expires
Fri, 01 Jan 1990 00:00:00 GMT

Verdicts & Comments Add Verdict or Comment

16 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

object| dataLayer function| $ function| jQuery object| MathJax string| GoogleAnalyticsObject function| ga function| gtag object| SETTINGS object| google_tag_data object| gaplugins object| gaGlobal object| gaData object| google_tag_manager function| fbq function| _fbq object| GooglebQhCsO

7 Cookies

Domain/Path Name / Value
.maths.org/ Name: _gid
Value: GA1.2.5911673.1712807946
.maths.org/ Name: _gat
Value: 1
.maths.org/ Name: _gcl_au
Value: 1.1.572708598.1712807946
.maths.org/ Name: _ga
Value: GA1.1.1337149767.1712807946
.maths.org/ Name: _ga_J6SPK1E9FZ
Value: GS1.1.1712807946.1.0.1712807946.0.0.0
.maths.org/ Name: _fbp
Value: fb.1.1712807946860.598499627
.doubleclick.net/ Name: test_cookie
Value: CheckForPermission

2 Console Messages

Source Level URL
Text
other warning URL: https://connect.facebook.net/signals/config/325410376964089?v=2.9.153&r=stable&domain=nrich.maths.org&hme=c3a545c63044e8e9102d4f32d84a1137594d024f28e801d670bc76dc5c075575&ex_m=67%2C112%2C99%2C103%2C58%2C3%2C93%2C66%2C15%2C91%2C84%2C49%2C51%2C158%2C161%2C172%2C168%2C169%2C171%2C28%2C94%2C50%2C73%2C170%2C153%2C156%2C165%2C166%2C173%2C121%2C14%2C48%2C178%2C177%2C123%2C17%2C33%2C38%2C1%2C41%2C62%2C63%2C64%2C68%2C88%2C16%2C13%2C90%2C87%2C86%2C100%2C102%2C37%2C101%2C29%2C25%2C154%2C157%2C130%2C27%2C10%2C11%2C12%2C5%2C6%2C24%2C21%2C22%2C54%2C59%2C61%2C71%2C95%2C26%2C72%2C8%2C7%2C76%2C46%2C20%2C97%2C96%2C9%2C19%2C18%2C81%2C53%2C79%2C32%2C70%2C0%2C89%2C31%2C78%2C83%2C45%2C44%2C82%2C36%2C4%2C85%2C77%2C42%2C39%2C34%2C80%2C2%2C35%2C60%2C40%2C98%2C43%2C75%2C65%2C104%2C57%2C56%2C30%2C92%2C55%2C52%2C47%2C74%2C69%2C23%2C105(Line 97)
Message:
Unrecognized feature: 'attribution-reporting'.
other warning URL: https://nrich.maths.org/frontpage
Message:
Third-party cookie will be blocked. Learn more in the Issues tab.

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

ajax.googleapis.com
connect.facebook.net
fonts.googleapis.com
fonts.gstatic.com
googleads.g.doubleclick.net
nrich.maths.org
region1.google-analytics.com
www.facebook.com
www.google-analytics.com
www.google.co.uk
www.google.com
www.googleadservices.com
www.googletagmanager.com
131.111.18.195
142.250.185.164
142.250.186.130
142.250.186.35
142.250.186.98
2001:4860:4802:32::36
2a00:1450:4001:809::200a
2a00:1450:4001:80b::2008
2a00:1450:4001:80e::200a
2a00:1450:4001:813::200e
2a00:1450:4001:829::2003
2a03:2880:f083:9:face:b00c:0:3
2a03:2880:f176:84:face:b00c:0:25de
025a1e9a82208e05577ab26a02a120985a4f90e6a846a9d321c4ac52099dc074
07c63fa8625dbba84634573a8cb4515143e2fc02bc67c0974705b49414649a6c
0c7260fac65e4f7ac5cf524f8ca96efd419cbb5a9b18a3e06e44c448581e9093
0dad48ffab8ee10cd776c461a80809173734ee24f578b8aa7797235d503ecaaf
0dd5d4975d38e9f02256030a9772dee43cf7ab403e46198c980f127c297514dd
102a4f7d6e94e0cd3081a5718055a28163d7f835c9f1b49daddf0064d0f22d25
11ec04e3948e25a0d78d2f77c04940b8e38a086624ec36fa4605a2a69b133e94
1247baed92515448c3652cb6d999f3d37b4d61f9fb6d4ab39107d9bdda18e4ce
141f0c53e457585d4ac7426eb3d757666d250ee6fbf0e9c0878128e4c627f0b1
17b2e177737625f68914f5572734ff8f7b72f175ba49daa691a41f133ad240f9
1b0f440d3f781fc380db044a46fe4b743e783637e9394239891ca529701a61b7
1cffc2b3146584685cd72751d7f28aa030ab9ae2f1bc78f2c27909f8d8287b26
1f4513a435d6a3047d20a50c1e7d4263de42146c74be227f774b5e82e6357e75
505c5fb3bc4469ad778c30df5380c5eb1fef4dc2d264aea0d51c6a4ac7c8469b
62f3f809487194fcc55a3ebd88811a604ae496027bb425d4ebd15d9ae1921945
65a16421c2a1070b5db85521e70f4056bac5c5edaf0efd604e0d3f65c578b4a0
68478bedd2386c01024f66753c72013de9b97d004729e00389bcee6329855ae5
717f6bb5f6cc69c444f54376a72dee0ca7968b2a12e7c9475247ec85c0e75a53
7652bfd4783e89f813db6714d70aceb5e0466b937dc75efc5d7ea6419d1c6167
82fed1512a072ca6a7ec0cd914fef2eb23b480c3d7800a1018e1d16b524d082e
88171413fc76dda23ab32baa17b11e4fff89141c633ece737852445f1ba6c1bd
962f73efd5f2d0c073f335f997e5eaa38eb2633be211026742b2e56dd6a802a8
ae01dc58eae7a3d3045e38549c8358cb6df5d6af4648f9aec601e9627ace0582
b4362387d192f09c36388b143c4487a8d2014885da769fdefa079c6b075ad91b
bd67d4553dc3fc3f51d3e6dd50fbb3117e16cf702f0ae0294d84a4eaefc80081
bda2cf571d7ea45f68afcdc87f968090dbf4bbdec2c7d6d19ce591b3980c296f
ccae0efc9a0a7a965296e3eac50f50a45ca497733f96add4ebfb55d0a391f83a
d0d9388b18d692e5b4cae89f224558a3ec8a98b80fc623dd7582ae43398ebed4
d5115f26f888623ab8f009d0f05d680452127674834d901ae81154dcfebde5c3
d692a67352a3dfa80010c86a62761cfff05c0b1086618106a8576cc45a6a8115
d82351a2e4dc593b4501e41a0ccf7252ac1b8c97a0ed102c30f51d969162f8a0
de36e50194320a7d3ef1ace9bd34a875a8bd458b253c061979dd628e9bf49afd
df62dc02023879a5bcd89620812ae31940150312c74d777789ee0082e993c1a4
e13ffa988be59cbf299d7ff68f019f902b60848203ac4990819eb7e4624ee52d
e168657712477b6c55eadbf911dab0ff2556a6dc744a40d38389de4af17f4ae3
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
ea95dd68f030784dcef82da05d73bf9d0c6840657fe6527f6339a32a7d60d20c
eb14baeac955bb11e33cd7fd3fd2f698cf20db1b450325f45ea843b6cdc82366
ec8c8cdba3af79240c8e09488799f7e84c3a318a84e9d0d631cb291ae8c2f5fa
ef1955ae757c8b966c83248350331bd3a30f658ced11f387f8ebf05ab3368629
f06300fb49645dd5d6ef800652e2b565c13314046b401ebaa5aa9fab54a5de6f
fb68d63956de2f3262d71fa563453011db6e23e9a112f336be3cb669cc37c411
fd78e0cfb4f720edae739470fe5ac81b14d35986cc7205d37aa2e65ebf5f5c41