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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 December 29 via api from US — Scanned from GB
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 14 IPs in 3 countries across 11 domains to perform 41 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 670518.
TLS certificate: Issued by R3 on November 4th 2023. 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

23    131.111.18.195 (Cambridge, United Kingdom)

ASN786 (JANET Jisc Services Limited, GB)
PTR: mmpssl3.damtp.cam.ac.uk
nrich.maths.org
1    2a00:1450:4001:827::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
ajax.googleapis.com
4    2a00:1450:4001:830::2008 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.googletagmanager.com
2    2a00:1450:4001:831::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
fonts.googleapis.com
2    2a00:1450:4001:801::200e (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.google-analytics.com
3    2a00:1450:4001:813::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
fonts.gstatic.com
1    142.250.185.194 (United States)

ASN15169 (GOOGLE, US)
PTR: fra16s52-in-f2.1e100.net
www.googleadservices.com
2    2a03:2880:f083:100:face:b00c:0:3 (Frankfurt am Main, Germany)

ASN32934 (FACEBOOK, US)
connect.facebook.net
1    2001:4860:4802:32::36 (United States)

ASN15169 (GOOGLE, US)
region1.google-analytics.com
2    2a00:1450:4001:829::2002 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
googleads.g.doubleclick.net
2    2a00:1450:4001:810::2004 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.google.com
2    2a00:1450:4001:808::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.google.co.uk
1    2a03:2880:f176:181:face:b00c:0:25de (Frankfurt am Main, Germany)

ASN32934 (FACEBOOK, US)
www.facebook.com
Apex Domain
Subdomains		 Transfer
23 maths.org
nrich.maths.org — Cisco Umbrella Rank: 670518
806 KB
4 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 36
320 KB
3 gstatic.com
fonts.gstatic.com
326 KB
3 google-analytics.com
www.google-analytics.com — Cisco Umbrella Rank: 27
region1.google-analytics.com — Cisco Umbrella Rank: 2189
21 KB
3 googleapis.com
ajax.googleapis.com — Cisco Umbrella Rank: 340
fonts.googleapis.com — Cisco Umbrella Rank: 29
35 KB
2 google.co.uk
www.google.co.uk — Cisco Umbrella Rank: 3754
563 B
2 google.com
www.google.com — Cisco Umbrella Rank: 2
1 KB
2 doubleclick.net
googleads.g.doubleclick.net — Cisco Umbrella Rank: 33
3 KB
2 facebook.net
connect.facebook.net — Cisco Umbrella Rank: 168
89 KB
1 facebook.com
www.facebook.com — Cisco Umbrella Rank: 98
185 B
1 googleadservices.com
www.googleadservices.com — Cisco Umbrella Rank: 138
2 KB
41 11
Domain Requested by
23 nrich.maths.org 3 redirects nrich.maths.org
4 www.googletagmanager.com nrich.maths.org
www.googletagmanager.com
3 fonts.gstatic.com fonts.googleapis.com
2 www.google.co.uk nrich.maths.org
2 www.google.com 1 redirects nrich.maths.org
2 googleads.g.doubleclick.net 1 redirects 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 region1.google-analytics.com www.googletagmanager.com
1 www.googleadservices.com www.googletagmanager.com
1 ajax.googleapis.com nrich.maths.org
41 13

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

Domain
www.maths.cam.ac.uk
twitter.com
www.facebook.com
mmp.maths.org
www.cam.ac.uk
Subject Issuer Validity Valid
nrich.maths.org
R3		 2023-11-04 -
2024-02-02		 3 months crt.sh
upload.video.google.com
GTS CA 1C3		 2023-11-20 -
2024-02-12		 3 months crt.sh
*.google-analytics.com
GTS CA 1C3		 2023-11-20 -
2024-02-12		 3 months crt.sh
*.gstatic.com
GTS CA 1C3		 2023-11-20 -
2024-02-12		 3 months crt.sh
www.googleadservices.com
GTS CA 1C3		 2023-11-20 -
2024-02-12		 3 months crt.sh
*.facebook.com
DigiCert SHA2 High Assurance Server CA		 2023-10-07 -
2024-01-05		 3 months crt.sh
*.g.doubleclick.net
GTS CA 1C3		 2023-11-20 -
2024-02-12		 3 months crt.sh
www.google.com
GTS CA 1C3		 2023-11-20 -
2024-02-12		 3 months crt.sh
www.google.co.uk
GTS CA 1C3		 2023-11-20 -
2024-02-12		 3 months crt.sh

This page contains 1 frames:

Primary Page: https://nrich.maths.org/frontpage
Frame ID: ED6BF80AE791784A1F681FAF43E52966
Requests: 48 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 302
    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

41
Requests

98 %
HTTPS

85 %
IPv6

11
Domains

13
Subdomains

14
IPs

3
Countries

1601 kB
Transfer

8873 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 302
    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 42
  • https://googleads.g.doubleclick.net/pagead/viewthroughconversion/11388054587/?random=1560551318&cv=11&fst=1703842048825&bg=ffffff&guid=ON&async=1&gtm=45He3bt0v9169459556&gcd=11l1l1l1l1&dma=0&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&auid=847549146.1703842049&uamb=0&uaw=0&fmt=3&ct_cookie_present=false&ocp_id=AJGOZdagPLmS78EPgbSI4A0&sscte=1&crd=&eitems=ChEIgPm5rAYQg7iLlPCVv_2jARIdAKYErqBiXtnLOL2Sh-MVPFIrNFmY9PitEKQghj4&pscrd=Ek5DaEVJZ1BtNXJBWVFvcWFCb1lfRjg4YWdBUklsQU1vSVh3eGhqN040RnJhWDg2Y3ZpX1BwakN6alh2YW9yS3hyY2djdkt2ak43QmNIWmcaWENoRUlnUG01ckFZUTdkZWMtSmV4eTRuUEFSSXRBSTYyQnA0NF9OcHQtZ0oyZjI4OWltUVM1eDVtMUwwYzNQRWJtd0JZaXJ2SERQbU5GTUI5aWRHcllOQVEiEwjWoNWgqrSDAxU5yTsCHQEaAtw HTTP 302
  • https://www.google.com/pagead/1p-conversion/11388054587/?random=1560551318&cv=11&fst=1703842048825&bg=ffffff&guid=ON&async=1&gtm=45He3bt0v9169459556&gcd=11l1l1l1l1&dma=0&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&auid=847549146.1703842049&uamb=0&uaw=0&fmt=3&ct_cookie_present=false&sscte=1&crd=&pscrd=Ek5DaEVJZ1BtNXJBWVFvcWFCb1lfRjg4YWdBUklsQU1vSVh3eGhqN040RnJhWDg2Y3ZpX1BwakN6alh2YW9yS3hyY2djdkt2ak43QmNIWmcaWENoRUlnUG01ckFZUTdkZWMtSmV4eTRuUEFSSXRBSTYyQnA0NF9OcHQtZ0oyZjI4OWltUVM1eDVtMUwwYzNQRWJtd0JZaXJ2SERQbU5GTUI5aWRHcllOQVEiEwjWoNWgqrSDAxU5yTsCHQEaAtw&is_vtc=1&ocp_id=AJGOZdagPLmS78EPgbSI4A0&cid=CAQSGwAvHhf_SGR7lN-8F62P-3pYo8m70u3H35doJQ&eitems=ChEIgPm5rAYQg7iLlPCVv_2jARIdAKYErqAMYQVASGImUjb-F1EKyfLmc2KZ3Bc6VjI&random=4270330880 HTTP 302
  • https://www.google.co.uk/pagead/1p-conversion/11388054587/?random=1560551318&cv=11&fst=1703842048825&bg=ffffff&guid=ON&async=1&gtm=45He3bt0v9169459556&gcd=11l1l1l1l1&dma=0&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&auid=847549146.1703842049&uamb=0&uaw=0&fmt=3&ct_cookie_present=false&sscte=1&crd=&pscrd=Ek5DaEVJZ1BtNXJBWVFvcWFCb1lfRjg4YWdBUklsQU1vSVh3eGhqN040RnJhWDg2Y3ZpX1BwakN6alh2YW9yS3hyY2djdkt2ak43QmNIWmcaWENoRUlnUG01ckFZUTdkZWMtSmV4eTRuUEFSSXRBSTYyQnA0NF9OcHQtZ0oyZjI4OWltUVM1eDVtMUwwYzNQRWJtd0JZaXJ2SERQbU5GTUI5aWRHcllOQVEiEwjWoNWgqrSDAxU5yTsCHQEaAtw&is_vtc=1&ocp_id=AJGOZdagPLmS78EPgbSI4A0&cid=CAQSGwAvHhf_SGR7lN-8F62P-3pYo8m70u3H35doJQ&eitems=ChEIgPm5rAYQg7iLlPCVv_2jARIdAKYErqAMYQVASGImUjb-F1EKyfLmc2KZ3Bc6VjI&random=4270330880&ipr=y

41 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
26 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
0efc433532816f91bc192f68f54f53ab7b28c3ad448f7bc40360b16fa9f47a90

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36
accept-language
en-GB,en;q=0.9

Response headers

Connection
Keep-Alive
Content-Encoding
gzip
Content-Length
6451
Content-Type
text/html; charset=UTF-8
Date
Fri, 29 Dec 2023 09:27:28 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
Fri, 29 Dec 2023 09:27:28 GMT
Keep-Alive
timeout=5, max=99
Location
/frontpage
Server
Apache/2.4.41 (Ubuntu)
9b40cfa730b3f11e6f97db9352772379.css
nrich.maths.org/cache/ 		27 KB
7 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://nrich.maths.org/cache/9b40cfa730b3f11e6f97db9352772379.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
b71f4cfd878a4d449ef4ec32e60d8e2e921beb17ab552dd2fd5bffef0d41a171

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 GMT
Content-Encoding
gzip
Last-Modified
Fri, 29 Dec 2023 09:27:28 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
W/"6be3-60da2a40b4184-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
6858
Expires
Fri, 05 Jan 2024 09:27:28 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
2a00:1450:4001:827::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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Sun, 24 Dec 2023 06:40:59 GMT
content-encoding
gzip
x-content-type-options
nosniff
age
441989
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
Mon, 23 Dec 2024 06:40:59 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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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
Fri, 05 Jan 2024 09:27:28 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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 GMT
Content-Encoding
gzip
Last-Modified
Fri, 29 Dec 2023 09:27:28 GMT
Server
Apache/2.4.41 (Ubuntu)
ETag
W/"c08-60da2a40b4184-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
Fri, 05 Jan 2024 09:27:28 GMT
js
www.googletagmanager.com/gtag/ 		231 KB
81 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
2a00:1450:4001:830::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
96c1524538e6ee637655da473e4a2de23675ce96002be081d4caadbb6d934db3
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Fri, 29 Dec 2023 09:27:28 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
82763
x-xss-protection
0
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
expires
Fri, 29 Dec 2023 09:27:28 GMT
css2
fonts.googleapis.com/ 		4 KB
1001 B 		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&display=swap
Requested by
Host: nrich.maths.org
URL: https://nrich.maths.org/frontpage
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:831::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
b81e0cb8aed209b599fca22f1ed82eb29e099845f1fa2b3b0f0e5164fb528a97
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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

strict-transport-security
max-age=31536000
date
Fri, 29 Dec 2023 09:27:28 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
Fri, 29 Dec 2023 09:15:50 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
Fri, 29 Dec 2023 09:27:28 GMT
css2
fonts.googleapis.com/ 		696 B
538 B 		Stylesheet
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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
2a00:1450:4001:831::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

strict-transport-security
max-age=31536000
date
Fri, 29 Dec 2023 09:27:28 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
Fri, 29 Dec 2023 09:27:28 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
Fri, 29 Dec 2023 09:27:28 GMT
University_of_Cambridge_logo_white_600.png
nrich.maths.org/images/ 		28 KB
29 KB 		Image
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https://nrich.maths.org/images/University_of_Cambridge_logo_white_600.png
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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
Fri, 05 Jan 2024 09:27:28 GMT
nrich-logo_white.svg
nrich.maths.org/images/ 		8 KB
3 KB 		Image
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https://nrich.maths.org/images/nrich-logo_white.svg
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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
Fri, 05 Jan 2024 09:27:28 GMT
iStock-1459826558.jpg
nrich.maths.org/images/stock/ 		97 KB
97 KB 		Image
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https://nrich.maths.org/images/stock/iStock-1459826558.jpg
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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
Fri, 05 Jan 2024 09:27:28 GMT
iStock-525409417.jpg
nrich.maths.org/images/stock/ 		181 KB
181 KB 		Image
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https://nrich.maths.org/images/stock/iStock-525409417.jpg
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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
Fri, 05 Jan 2024 09:27:28 GMT
iStock-1278978518.jpg
nrich.maths.org/images/stock/ 		176 KB
176 KB 		Image
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https://nrich.maths.org/images/stock/iStock-1278978518.jpg
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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=98
Content-Length
180260
Expires
Fri, 05 Jan 2024 09:27:28 GMT
twitter-x_white.png
nrich.maths.org/images/ 		4 KB
4 KB 		Image
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https://nrich.maths.org/images/twitter-x_white.png
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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=98
Content-Length
4113
Expires
Fri, 05 Jan 2024 09:27:28 GMT
facebook-logo.png
nrich.maths.org/images/ 		2 KB
3 KB 		Image
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https://nrich.maths.org/images/facebook-logo.png
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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=97
Content-Length
2459
Expires
Fri, 05 Jan 2024 09:27:28 GMT
2023.js
nrich.maths.org/javascript/ 		3 KB
1 KB 		Script
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https://nrich.maths.org/javascript/2023.js
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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
Fri, 05 Jan 2024 09:27:28 GMT
gtm.js
www.googletagmanager.com/ 		219 KB
79 KB 		Script
General
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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
2a00:1450:4001:830::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
199422413e2fee2af0b2fbc81fb578268a7da303e7724876eb4165ac8d1f960f
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Fri, 29 Dec 2023 09:27:28 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
80233
x-xss-protection
0
last-modified
Fri, 29 Dec 2023 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
Fri, 29 Dec 2023 09:27:28 GMT
TeX-AMS_HTML.js
nrich.maths.org/javascript/MathJax/config/ 		156 KB
45 KB 		Script
General
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https://nrich.maths.org/javascript/MathJax/config/TeX-AMS_HTML.js
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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
Fri, 05 Jan 2024 09:27:28 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
2a00:1450:4001:801::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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

strict-transport-security
max-age=10886400; includeSubDomains; preload
content-encoding
gzip
x-content-type-options
nosniff
date
Fri, 29 Dec 2023 09:22:25 GMT
last-modified
Tue, 12 Dec 2023 18:09:08 GMT
server
Golfe2
age
303
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
Fri, 29 Dec 2023 11:22:25 GMT
University_of_Cambridge_logo_white_600.png
nrich.maths.org/images/ 		28 KB
29 KB 		Image
General
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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=96
Content-Length
28918
Expires
Fri, 05 Jan 2024 09:27:28 GMT
nrich-logo_white.svg
nrich.maths.org/images/ 		8 KB
3 KB 		Image
General
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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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/frontpage
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Date
Fri, 29 Dec 2023 09:27:28 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
dots.png
nrich.maths.org/images/ 		102 KB
102 KB 		Image
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https://nrich.maths.org/images/dots.png
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455 B 		Image
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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
185 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=1703842049178&sw=1600&sh=1200&v=2.9.138&r=stable&ec=0&o=4126&fbp=fb.1.1703842049177.1494666802&ler=empty&it=1703842049061&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:f176:181: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

accept-language
en-GB,en;q=0.9
Referer
https://nrich.maths.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

strict-transport-security
max-age=31536000; includeSubDomains
date
Fri, 29 Dec 2023 09:27:29 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

Verdicts & Comments Add Verdict or Comment

17 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| documentPictureInPicture 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 object| GooglebQhCsO function| fbq function| _fbq

7 Cookies

Domain/Path Name / Value
.maths.org/ Name: _gid
Value: GA1.2.1441606065.1703842049
.maths.org/ Name: _gat
Value: 1
.maths.org/ Name: _gcl_au
Value: 1.1.847549146.1703842049
.maths.org/ Name: _ga
Value: GA1.1.1401812522.1703842049
.maths.org/ Name: _ga_J6SPK1E9FZ
Value: GS1.1.1703842048.1.0.1703842048.0.0.0
.doubleclick.net/ Name: test_cookie
Value: CheckForPermission
.maths.org/ Name: _fbp
Value: fb.1.1703842049177.1494666802

1 Console Messages

Source Level URL
Text
other warning URL: https://connect.facebook.net/signals/config/325410376964089?v=2.9.138&r=stable&domain=nrich.maths.org(Line 132)
Message:
Unrecognized feature: 'attribution-reporting'.

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
142.250.185.194
2001:4860:4802:32::36
2a00:1450:4001:801::200e
2a00:1450:4001:808::2003
2a00:1450:4001:810::2004
2a00:1450:4001:813::2003
2a00:1450:4001:827::200a
2a00:1450:4001:829::2002
2a00:1450:4001:830::2008
2a00:1450:4001:831::200a
2a03:2880:f083:100:face:b00c:0:3
2a03:2880:f176:181:face:b00c:0:25de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