Submitted URL: http://nrich.maths.org/
Effective URL: https://nrich.maths.org/frontpage
Submission: On April 29 via api from US — Scanned from GB

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. The Cisco Umbrella rank of the primary domain is 744538.
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

Apex Domain
Subdomains
Transfer
21 maths.org
nrich.maths.org — Cisco Umbrella Rank: 744538
777 KB
5 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 39
437 KB
4 google-analytics.com
www.google-analytics.com — Cisco Umbrella Rank: 31
region1.google-analytics.com — Cisco Umbrella Rank: 2404
21 KB
3 gstatic.com
fonts.gstatic.com
333 KB
3 googleapis.com
ajax.googleapis.com — Cisco Umbrella Rank: 363
fonts.googleapis.com — Cisco Umbrella Rank: 33
35 KB
2 facebook.net
connect.facebook.net — Cisco Umbrella Rank: 180
70 KB
1 facebook.com
www.facebook.com — Cisco Umbrella Rank: 97
269 B
1 google.de
www.google.de — Cisco Umbrella Rank: 7278
64 B
1 google.com
www.google.com — Cisco Umbrella Rank: 2
24 B
1 doubleclick.net
googleads.g.doubleclick.net — Cisco Umbrella Rank: 36
24 B
1 googleadservices.com
www.googleadservices.com — Cisco Umbrella Rank: 123
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.de 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
2024-04-08 -
2024-07-01
3 months crt.sh
*.google-analytics.com
GTS CA 1C3
2024-04-08 -
2024-07-01
3 months crt.sh
*.gstatic.com
GTS CA 1C3
2024-04-08 -
2024-07-01
3 months crt.sh
*.facebook.com
DigiCert SHA2 High Assurance Server CA
2024-02-06 -
2024-05-06
3 months crt.sh
*.googleadservices.com
GTS CA 1C3
2024-04-08 -
2024-07-01
3 months crt.sh

This page contains 1 frames:

Primary Page: https://nrich.maths.org/frontpage
Frame ID: D8E5B10775372E3452B5343BA45FE211
Requests: 46 HTTP requests in this frame

Screenshot

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

1675 kB
Transfer

9121 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 40
  • https://googleads.g.doubleclick.net/pagead/viewthroughconversion/11388054587/?random=1308047871&cv=11&fst=1714382158190&bg=ffffff&guid=ON&async=1&gtm=45be44o0v9170069739z89169459556za201&gcd=13l3lPl2l1&dma_cps=sypham&dma=1&u_w=1600&u_h=1200&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=1088570312.1714382158&uaa=x86&uab=64&uafvl=Chromium%3B124.0.6367.78%7CGoogle%2520Chrome%3B124.0.6367.78%7CNot-A.Brand%3B99.0.0.0&uamb=0&uam=&uap=Win32&uapv=10.0.0&uaw=0&fdr=SA&fmt=3&ct_cookie_present=false&sscte=1&crd=CNm5sQIIscGxAgiwwbECCLnBsQIImMGxAg&eitems=ChEI8Iq9sQYQ94_x9u2Gia2_ARIdAPMJvq--Q8i5ow3X8VUBrzXAJ-TIhq3Q8SHiJ2o&pscrd=IhMIz7C3nIvnhQMV2tQRCB33hwOuMgIIAzICCAQyAggHMgIICDICCAkyAggKMgIIAjICCAs6GGh0dHBzOi8vbnJpY2gubWF0aHMub3JnLw HTTP 302
  • https://www.google.com/pagead/1p-conversion/11388054587/?random=1308047871&cv=11&fst=1714382158190&bg=ffffff&guid=ON&async=1&gtm=45be44o0v9170069739z89169459556za201&gcd=13l3lPl2l1&dma_cps=sypham&dma=1&u_w=1600&u_h=1200&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=1088570312.1714382158&uaa=x86&uab=64&uafvl=Chromium%3B124.0.6367.78%7CGoogle%2520Chrome%3B124.0.6367.78%7CNot-A.Brand%3B99.0.0.0&uamb=0&uam=&uap=Win32&uapv=10.0.0&uaw=0&fdr=SA&fmt=3&ct_cookie_present=false&sscte=1&crd=CNm5sQIIscGxAgiwwbECCLnBsQIImMGxAg&pscrd=IhMIz7C3nIvnhQMV2tQRCB33hwOuMgIIAzICCAQyAggHMgIICDICCAkyAggKMgIIAjICCAs6GGh0dHBzOi8vbnJpY2gubWF0aHMub3JnLw&is_vtc=1&cid=CAQSGwB7FLtqZT18zW0Z4aMOCg5VJXBq3mHPxeK5Nw&eitems=ChEI8Iq9sQYQ94_x9u2Gia2_ARIdAPMJvq8G8iaQI5xzD1rXJIb7-gNA9Zk74Pt6pkI&random=3813656059 HTTP 302
  • https://www.google.de/pagead/1p-conversion/11388054587/?random=1308047871&cv=11&fst=1714382158190&bg=ffffff&guid=ON&async=1&gtm=45be44o0v9170069739z89169459556za201&gcd=13l3lPl2l1&dma_cps=sypham&dma=1&u_w=1600&u_h=1200&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=1088570312.1714382158&uaa=x86&uab=64&uafvl=Chromium%3B124.0.6367.78%7CGoogle%2520Chrome%3B124.0.6367.78%7CNot-A.Brand%3B99.0.0.0&uamb=0&uam=&uap=Win32&uapv=10.0.0&uaw=0&fdr=SA&fmt=3&ct_cookie_present=false&sscte=1&crd=CNm5sQIIscGxAgiwwbECCLnBsQIImMGxAg&pscrd=IhMIz7C3nIvnhQMV2tQRCB33hwOuMgIIAzICCAQyAggHMgIICDICCAkyAggKMgIIAjICCAs6GGh0dHBzOi8vbnJpY2gubWF0aHMub3JnLw&is_vtc=1&cid=CAQSGwB7FLtqZT18zW0Z4aMOCg5VJXBq3mHPxeK5Nw&eitems=ChEI8Iq9sQYQ94_x9u2Gia2_ARIdAPMJvq8G8iaQI5xzD1rXJIb7-gNA9Zk74Pt6pkI&random=3813656059&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
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

Accept-Language
en-GB,en;q=0.9;q=0.9
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Response headers

Connection
Keep-Alive
Content-Encoding
gzip
Content-Length
6715
Content-Type
text/html; charset=UTF-8
Date
Mon, 29 Apr 2024 09:15:57 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
Mon, 29 Apr 2024 09:15:57 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
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 GMT
Content-Encoding
gzip
Last-Modified
Mon, 29 Apr 2024 09:15:57 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
W/"704e-61738b37f9015-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
Mon, 06 May 2024 09:15:57 GMT
jquery.min.js
ajax.googleapis.com/ajax/libs/jquery/1.7.1/
92 KB
33 KB
Script
General
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
2a00:1450:4001:828::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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Fri, 26 Apr 2024 13:13:02 GMT
content-encoding
gzip
x-content-type-options
nosniff
age
244975
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
Sat, 26 Apr 2025 13:13:02 GMT
MathJax.js
nrich.maths.org/javascript/MathJax/
49 KB
15 KB
Script
General
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 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
Mon, 06 May 2024 09:15:57 GMT
2c7ebbe51362fc6db85995e3d3b5b9d5.js
nrich.maths.org/cache/
3 KB
1 KB
Script
General
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 GMT
Content-Encoding
gzip
Last-Modified
Mon, 29 Apr 2024 09:15:57 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
W/"c08-61738b37f9015-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
Mon, 06 May 2024 09:15:57 GMT
js
www.googletagmanager.com/gtag/
258 KB
90 KB
Script
General
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
2a00:1450:4001:82f::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
a6418b887bc9763805902974351704464ce05dd879b3733ee117182a1293a78c
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Mon, 29 Apr 2024 09:15:57 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
92458
x-xss-protection
0
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
expires
Mon, 29 Apr 2024 09:15:57 GMT
css2
fonts.googleapis.com/
5 KB
713 B
Stylesheet
General
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
2a00:1450:4001:810::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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

strict-transport-security
max-age=31536000
date
Mon, 29 Apr 2024 09:15:57 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
Mon, 29 Apr 2024 09:13:54 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
Mon, 29 Apr 2024 09:15:57 GMT
css2
fonts.googleapis.com/
696 B
873 B
Stylesheet
General
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
2a00:1450:4001:810::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
9698032ac68a22523ccd2add717e51453c630776523f539e865953102def42ac
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

strict-transport-security
max-age=31536000
date
Mon, 29 Apr 2024 09:15:57 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
Mon, 29 Apr 2024 09:15:57 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
Mon, 29 Apr 2024 09:15:57 GMT
University_of_Cambridge_logo_white_600.png
nrich.maths.org/images/
28 KB
29 KB
Image
General
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 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
Mon, 06 May 2024 09:15:57 GMT
nrich-logo_white.svg
nrich.maths.org/images/
8 KB
3 KB
Image
General
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 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
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 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
Mon, 06 May 2024 09:15:57 GMT
iStock-1459826558.jpg
nrich.maths.org/images/stock/
97 KB
97 KB
Image
General
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 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
Mon, 06 May 2024 09:15:57 GMT
iStock-525409417.jpg
nrich.maths.org/images/stock/
181 KB
181 KB
Image
General
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 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
Mon, 06 May 2024 09:15:57 GMT
iStock-1278978518.jpg
nrich.maths.org/images/stock/
176 KB
176 KB
Image
General
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 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
Mon, 06 May 2024 09:15:57 GMT
twitter-x_white.png
nrich.maths.org/images/
4 KB
4 KB
Image
General
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 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
Mon, 06 May 2024 09:15:57 GMT
facebook-logo.png
nrich.maths.org/images/
2 KB
3 KB
Image
General
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 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
Mon, 06 May 2024 09:15:57 GMT
2023.js
nrich.maths.org/javascript/
3 KB
1 KB
Script
General
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 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
Mon, 06 May 2024 09:15:57 GMT
gtm.js
www.googletagmanager.com/
237 KB
85 KB
Script
General
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
2a00:1450:4001:82f::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
444952460c0db701cbfd30a205cde2e17702d62f2b67e84a5e4cda08c9cb9ee1
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Mon, 29 Apr 2024 09:15:57 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
86630
x-xss-protection
0
last-modified
Mon, 29 Apr 2024 09:00:00 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
Mon, 29 Apr 2024 09:15:57 GMT
TeX-AMS_HTML.js
nrich.maths.org/javascript/MathJax/config/
156 KB
45 KB
Script
General
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 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
Mon, 06 May 2024 09:15:57 GMT
analytics.js
www.google-analytics.com/
52 KB
21 KB
Script
General
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
2a00:1450:4001:803::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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 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
Mon, 29 Apr 2024 07:48:08 GMT
last-modified
Tue, 12 Dec 2023 18:09:08 GMT
server
Golfe2
age
5269
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
20994
expires
Mon, 29 Apr 2024 09:48:08 GMT
dots.png
nrich.maths.org/images/
102 KB
102 KB
Image
General
Full URL
https://nrich.maths.org/images/dots.png
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/cache/ce16afe5a2a9d8ba18f658c16665194d.css
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
65a16421c2a1070b5db85521e70f4056bac5c5edaf0efd604e0d3f65c578b4a0

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/cache/ce16afe5a2a9d8ba18f658c16665194d.css
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:57 GMT
Last-Modified
Sun, 29 Oct 2023 09:19:02 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
"1975a-608d76995feb9"
Content-Type
image/png
Cache-Control
max-age=31536000, public
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=5, max=98
Content-Length
104282
Expires
Mon, 06 May 2024 09:15:57 GMT
truncated
/
380 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
717f6bb5f6cc69c444f54376a72dee0ca7968b2a12e7c9475247ec85c0e75a53

Request headers

Accept-Language
en-GB,en;q=0.9;q=0.9
Referer
User-Agent
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public, max-age=1200
permissions-policy
accelerometer=(), attribution-reporting=(), autoplay=(), bluetooth=(), camera=(), ch-device-memory=(), ch-downlink=(), ch-dpr=(), ch-ect=(), ch-rtt=(), ch-save-data=(), ch-ua-arch=(), ch-ua-bitness=(), ch-viewport-height=(), ch-viewport-width=(), ch-width=(), clipboard-read=(), clipboard-write=(), display-capture=(), encrypted-media=(), fullscreen=(self), gamepad=(), geolocation=(), gyroscope=(), hid=(), idle-detection=(), keyboard-map=(), local-fonts=(), magnetometer=(), microphone=(), midi=(), otp-credentials=(), payment=(), picture-in-picture=(), publickey-credentials-get=(), screen-wake-lock=(), serial=(), usb=(), window-management=(), xr-spatial-tracking=();report-to="permissions_policy"
timing-allow-origin
*
expires
Sat, 01 Jan 2000 00:00:00 GMT
/
www.facebook.com/tr/
0
269 B
Image
General
Full URL
https://www.facebook.com/tr/?id=325410376964089&ev=PageView&dl=https%3A%2F%2Fnrich.maths.org%2Ffrontpage&rl=&if=false&ts=1714382158720&sw=1600&sh=1200&v=2.9.154&r=stable&ec=0&o=4126&fbp=fb.1.1714382158720.1143660449&ler=empty&cdl=API_unavailable&it=1714382158358&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:f177:83: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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-fb-connection-quality
GOOD; q=0.7, rtt=52, rtx=0, c=10, mss=1294, tbw=2766, tp=-1, tpl=-1, uplat=0, ullat=0
strict-transport-security
max-age=31536000; includeSubDomains
date
Mon, 29 Apr 2024 09:15:58 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
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="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/frontpage
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

Date
Mon, 29 Apr 2024 09:15:58 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
45 B
Ping
General
Full URL
https://region1.google-analytics.com/g/collect?v=2&tid=G-J6SPK1E9FZ&gtm=45je44o0v9115857644z89169459556za200&_p=1714382157398&gcd=13l3l3l2l1&npa=1&dma_cps=sypham&dma=1&cid=542602173.1714382158&ul=en-gb&sr=1600x1200&uaa=x86&uab=64&uafvl=Chromium%3B124.0.6367.78%7CGoogle%2520Chrome%3B124.0.6367.78%7CNot-A.Brand%3B99.0.0.0&uamb=0&uam=&uap=Win32&uapv=10.0.0&uaw=0&pscdl=noapi&_s=2&sid=1714382158&sct=1&seg=0&dl=https%3A%2F%2Fnrich.maths.org%2Ffrontpage&dt=NRICH&en=contentView&_et=2&tfd=6106
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
2001:4860:4802:34::36 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://nrich.maths.org/
Accept-Language
en-GB,en;q=0.9;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/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

pragma
no-cache
date
Mon, 29 Apr 2024 09:16:03 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: GA1.2.678778090.1714382158
.maths.org/ Name: _gat
Value: 1
.maths.org/ Name: _gcl_au
Value: 1.1.1088570312.1714382158
.maths.org/ Name: _ga
Value: GA1.1.542602173.1714382158
.maths.org/ Name: _ga_J6SPK1E9FZ
Value: GS1.1.1714382158.1.0.1714382158.0.0.0
.doubleclick.net/ Name: test_cookie
Value: CheckForPermission
.maths.org/ Name: _fbp
Value: fb.1.1714382158720.1143660449

2 Console Messages

Source Level URL
Text
other warning URL: https://connect.facebook.net/signals/config/325410376964089?v=2.9.154&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.com
www.google.de
www.googleadservices.com
www.googletagmanager.com
131.111.18.195
142.250.185.162
142.250.186.68
172.217.16.195
2001:4860:4802:34::36
216.58.206.34
2a00:1450:4001:800::2003
2a00:1450:4001:803::200e
2a00:1450:4001:810::200a
2a00:1450:4001:828::200a
2a00:1450:4001:82f::2008
2a03:2880:f084:d:face:b00c:0:3
2a03:2880:f177:83:face:b00c:0:25de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