Submitted URL: https://cs50.harvard.edu/
Effective URL: https://www.edx.org/cs50
Submission: On June 29 via api from SG — Scanned from SG

Summary

This website contacted 27 IPs in 3 countries across 20 domains to perform 105 HTTP transactions. The main IP is 2606:4700::6811:5dc7, located in United States and belongs to CLOUDFLARENET, US. The main domain is www.edx.org. The Cisco Umbrella rank of the primary domain is 133606.
TLS certificate: Issued by Cloudflare Inc ECC CA-3 on May 14th 2023. Valid for: a year.
This is the only time www.edx.org was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 1 3.81.245.248 14618 (AMAZON-AES)
1 1 13.33.88.126 16509 (AMAZON-02)
37 2606:4700::68... 13335 (CLOUDFLAR...)
10 2606:4700::68... 13335 (CLOUDFLAR...)
1 2606:4700::68... 13335 (CLOUDFLAR...)
9 13.224.249.70 16509 (AMAZON-02)
1 2404:6800:400... 15169 (GOOGLE)
2 2404:6800:400... 15169 (GOOGLE)
1 35.186.249.72 15169 (GOOGLE)
1 52.88.179.26 16509 (AMAZON-02)
1 34.215.155.61 16509 (AMAZON-02)
1 151.101.66.137 54113 (FASTLY)
4 3.230.203.248 14618 (AMAZON-AES)
2 162.247.243.29 54113 (FASTLY)
2 2404:6800:400... 15169 (GOOGLE)
1 54.192.150.62 16509 (AMAZON-02)
1 52.13.30.205 16509 (AMAZON-02)
18 2606:4700::68... 13335 (CLOUDFLAR...)
1 2404:6800:400... 15169 (GOOGLE)
1 2600:9000:20c... 16509 (AMAZON-02)
1 104.69.168.60 16625 (AKAMAI-AS)
1 23.56.28.14 16625 (AKAMAI-AS)
1 2404:6800:400... 15169 (GOOGLE)
1 2404:6800:400... 15169 (GOOGLE)
2 35.81.173.170 16509 (AMAZON-02)
2 2600:9000:200... ()
1 54.85.60.128 ()
1 52.12.117.226 16509 (AMAZON-02)
105 27
Apex Domain
Subdomains
Transfer
38 edx.org
edx.org — Cisco Umbrella Rank: 79317
www.edx.org — Cisco Umbrella Rank: 133606
2 MB
18 edx-cdn.org
prod-discovery.edx-cdn.org — Cisco Umbrella Rank: 213312
8 MB
10 segment.io
cdn.segment.io — Cisco Umbrella Rank: 23468
api.segment.io — Cisco Umbrella Rank: 1130
71 KB
10 cookielaw.org
cdn.cookielaw.org — Cisco Umbrella Rank: 407
145 KB
4 stackadapt.com
tags.srv.stackadapt.com — Cisco Umbrella Rank: 3188
7 KB
4 mountain.com
dx.mountain.com — Cisco Umbrella Rank: 6180
px.mountain.com — Cisco Umbrella Rank: 6219
gs.mountain.com — Cisco Umbrella Rank: 11752
8 KB
3 optimizely.com
cdn3.optimizely.com — Cisco Umbrella Rank: 5114
a1706490390.cdn.optimizely.com — Cisco Umbrella Rank: 200882
logx.optimizely.com
3 KB
3 branch.io
cdn.branch.io — Cisco Umbrella Rank: 998
api2.branch.io — Cisco Umbrella Rank: 638
23 KB
2 youtube.com
www.youtube.com — Cisco Umbrella Rank: 91
64 KB
2 nr-data.net
bam.nr-data.net — Cisco Umbrella Rank: 331
821 B
2 google-analytics.com
www.google-analytics.com — Cisco Umbrella Rank: 63
21 KB
1 google.com.sg
www.google.com.sg — Cisco Umbrella Rank: 11594
408 B
1 google.com
www.google.com — Cisco Umbrella Rank: 10
408 B
1 app.link
app.link — Cisco Umbrella Rank: 2269
632 B
1 doubleclick.net
stats.g.doubleclick.net — Cisco Umbrella Rank: 130
351 B
1 newrelic.com
js-agent.newrelic.com — Cisco Umbrella Rank: 535
17 KB
1 impactcdn.com
utt.impactcdn.com — Cisco Umbrella Rank: 5559
14 KB
1 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 79
103 KB
1 onetrust.com
geolocation.onetrust.com — Cisco Umbrella Rank: 678
295 B
1 harvard.edu
cs50.harvard.edu — Cisco Umbrella Rank: 415842
365 B
105 20
Domain Requested by
37 www.edx.org www.edx.org
18 prod-discovery.edx-cdn.org
10 cdn.cookielaw.org www.edx.org
9 cdn.segment.io www.edx.org
4 tags.srv.stackadapt.com www.edx.org
2 api2.branch.io www.edx.org
2 px.mountain.com www.edx.org
2 www.youtube.com www.edx.org
2 bam.nr-data.net www.edx.org
2 www.google-analytics.com www.edx.org
1 gs.mountain.com www.edx.org
1 logx.optimizely.com www.edx.org
1 www.google.com.sg
1 www.google.com
1 a1706490390.cdn.optimizely.com www.edx.org
1 cdn3.optimizely.com www.edx.org
1 app.link www.edx.org
1 stats.g.doubleclick.net www.edx.org
1 api.segment.io www.edx.org
1 cdn.branch.io www.edx.org
1 js-agent.newrelic.com www.edx.org
1 dx.mountain.com www.edx.org
1 utt.impactcdn.com www.edx.org
1 www.googletagmanager.com www.edx.org
1 geolocation.onetrust.com www.edx.org
1 edx.org 1 redirects
1 cs50.harvard.edu 1 redirects
105 27
Subject Issuer Validity Valid
sni.cloudflaressl.com
Cloudflare Inc ECC CA-3
2023-05-14 -
2024-05-13
a year crt.sh
cookielaw.org
Cloudflare Inc ECC CA-3
2023-04-01 -
2024-03-31
a year crt.sh
onetrust.com
Cloudflare Inc ECC CA-3
2022-12-13 -
2023-12-13
a year crt.sh
*.segment.com
Amazon RSA 2048 M01
2023-02-24 -
2024-01-12
a year crt.sh
*.google-analytics.com
GTS CA 1C3
2023-05-29 -
2023-08-21
3 months crt.sh
utt.impactcdn.com
GTS CA 1D4
2023-05-22 -
2023-08-20
3 months crt.sh
*.mountain.com
Go Daddy Secure Certificate Authority - G2
2023-06-12 -
2024-06-23
a year crt.sh
34.215.155.61
Sectigo RSA Domain Validation Secure Server CA
2022-09-27 -
2023-09-27
a year crt.sh
js-agent.newrelic.com
GlobalSign Atlas R3 DV TLS CA 2023 Q2
2023-04-13 -
2024-05-14
a year crt.sh
*.srv.stackadapt.com
Amazon RSA 2048 M02
2023-02-27 -
2023-11-07
8 months crt.sh
*.nr-data.net
DigiCert TLS RSA SHA256 2020 CA1
2022-11-18 -
2023-12-19
a year crt.sh
*.google.com
GTS CA 1C3
2023-05-29 -
2023-08-21
3 months crt.sh
*.branch.io
Amazon RSA 2048 M01
2023-02-21 -
2023-11-09
9 months crt.sh
*.segment.io
Amazon RSA 2048 M01
2023-02-10 -
2024-02-10
a year crt.sh
*.g.doubleclick.net
GTS CA 1C3
2023-05-29 -
2023-08-21
3 months crt.sh
appipv4.link
Amazon RSA 2048 M02
2023-04-25 -
2024-05-23
a year crt.sh
*.optimizely.com
DigiCert TLS RSA SHA256 2020 CA1
2022-10-30 -
2023-10-30
a year crt.sh
*.cdn.optimizely.com
GeoTrust RSA CA 2018
2023-02-26 -
2024-02-28
a year crt.sh
www.google.com
GTS CA 1C3
2023-05-29 -
2023-08-21
3 months crt.sh
*.google.com.sg
GTS CA 1C3
2023-05-29 -
2023-08-21
3 months crt.sh
logx.optimizely.com
Amazon RSA 2048 M01
2023-06-24 -
2024-07-22
a year crt.sh

This page contains 2 frames:

Primary Page: https://www.edx.org/cs50
Frame ID: C5D64EC6319195EDECC15C55419A7C63
Requests: 105 HTTP requests in this frame

Frame: https://a1706490390.cdn.optimizely.com/client_storage/a1706490390.html
Frame ID: 06689117D1A948A4B0CBCED6ECF9A158
Requests: 1 HTTP requests in this frame

Screenshot

Page Title

CS50: Computer Science Courses and Programs from Harvard | edXedX logoBack ButtonSearch IconFilter Icon

Page URL History Show full URLs

  1. https://cs50.harvard.edu/ HTTP 302
    https://edx.org/cs50 HTTP 301
    https://www.edx.org/cs50 Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • google-analytics\.com/(?:ga|urchin|analytics)\.js

Overall confidence: 100%
Detected patterns
  • googletagmanager\.com/gtm\.js

Overall confidence: 100%
Detected patterns
  • cdn\.cookielaw\.org

Overall confidence: 100%
Detected patterns
  • optimizely\.com.*\.js

Page Statistics

105
Requests

99 %
HTTPS

43 %
IPv6

20
Domains

27
Subdomains

27
IPs

3
Countries

10308 kB
Transfer

16402 kB
Size

20
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. https://cs50.harvard.edu/ HTTP 302
    https://edx.org/cs50 HTTP 301
    https://www.edx.org/cs50 Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

105 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request cs50
www.edx.org/
Redirect Chain
  • https://cs50.harvard.edu/
  • https://edx.org/cs50
  • https://www.edx.org/cs50
677 KB
112 KB
Document
General
Full URL
https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
78e5e4c65a3e56b026a20c39361522d7dfcbade0c68759147af6ec1f37871b34
Security Headers
Name Value
Strict-Transport-Security max-age=2592000
X-Frame-Options DENY

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36
accept-language
zh-SG,zh;q=0.9

Response headers

cache-control
public, max-age=1800
cf-cache-status
REVALIDATED
cf-ray
7deb53aa28ae40fe-SIN
content-encoding
gzip
content-type
text/html
date
Thu, 29 Jun 2023 04:11:41 GMT
etag
W/"649cae71-a153a"
last-modified
Wed, 28 Jun 2023 22:04:33 GMT
server
cloudflare
strict-transport-security
max-age=2592000
vary
Accept-Encoding
x-frame-options
DENY

Redirect headers

age
53328
content-length
0
date
Wed, 28 Jun 2023 13:22:53 GMT
location
https://www.edx.org/cs50
server
AmazonS3
via
1.1 cebe7291f382f643e4ea2329a2d8016a.cloudfront.net (CloudFront)
x-amz-cf-id
H4HBFg2Yv64W55DMKqs9rbD5E5BB43MUr9P9P1cKExamTSRgGwZytQ==
x-amz-cf-pop
SIN2-P2
x-cache
Hit from cloudfront
fa169e97-be64-4cc1-bad3-9534590f9a30.json
cdn.cookielaw.org/consent/fa169e97-be64-4cc1-bad3-9534590f9a30/
5 KB
2 KB
XHR
General
Full URL
https://cdn.cookielaw.org/consent/fa169e97-be64-4cc1-bad3-9534590f9a30/fa169e97-be64-4cc1-bad3-9534590f9a30.json
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:aa72 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
db0b1d40bc1c3688c4a3ef54db01f9300f5b4277cd103d9f968037e5e56ddbe6
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

x-ms-blob-type
BlockBlob
date
Thu, 29 Jun 2023 04:11:41 GMT
content-encoding
gzip
x-content-type-options
nosniff
cf-cache-status
HIT
strict-transport-security
max-age=31536000; includeSubDomains; preload
age
45311
content-md5
FWGyU0Jl/yzSsUFkLNB1gg==
content-length
1848
x-ms-lease-status
unlocked
last-modified
Wed, 28 Jun 2023 15:34:22 GMT
server
cloudflare
etag
0x8DB77ED258C7AAA
vary
Accept-Encoding
content-type
application/x-javascript
access-control-allow-origin
*
x-ms-request-id
a93e269c-701e-0052-57d6-a9c514000000
access-control-expose-headers
x-ms-request-id,Server,x-ms-version,Content-Type,Content-Encoding,Cache-Control,Last-Modified,ETag,Content-MD5,x-ms-lease-status,x-ms-blob-type,Content-Length,Date,Transfer-Encoding
cache-control
public, max-age=86400
x-ms-version
2009-09-19
accept-ranges
bytes
cf-ray
7deb53b10c4601e5-SIN
expires
Fri, 30 Jun 2023 04:11:41 GMT
primary-fonts.css
www.edx.org/fonts/
637 B
402 B
Stylesheet
General
Full URL
https://www.edx.org/fonts/primary-fonts.css
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
23718bd8babfe86d2fa41ada3073285d1629e14c47b1392b6c9b87fbfca1955a
Security Headers
Name Value
Strict-Transport-Security max-age=2592000

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/cs50
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
Thu, 29 Jun 2023 04:11:41 GMT
content-encoding
gzip
cf-cache-status
HIT
last-modified
Wed, 28 Jun 2023 21:54:29 GMT
server
cloudflare
strict-transport-security
max-age=2592000
age
18693
etag
W/"649cac15-27d"
vary
Accept-Encoding
content-type
text/css
cache-control
public, max-age=31536000, immutable
accept-ranges
bytes
cf-ray
7deb53b12fdd40fe-SIN
content-length
253
async-fonts.css
www.edx.org/fonts/
938 B
436 B
Stylesheet
General
Full URL
https://www.edx.org/fonts/async-fonts.css
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
b3fe20e074c0b25e7ea0da71bcb9a0c2ffa30245e8e281dfbcd1dea637468a97
Security Headers
Name Value
Strict-Transport-Security max-age=2592000

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/cs50
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
Thu, 29 Jun 2023 04:11:41 GMT
content-encoding
gzip
cf-cache-status
HIT
last-modified
Wed, 28 Jun 2023 21:54:29 GMT
server
cloudflare
strict-transport-security
max-age=2592000
age
18693
etag
W/"649cac15-3aa"
vary
Accept-Encoding
content-type
text/css
cache-control
public, max-age=31536000, immutable
accept-ranges
bytes
cf-ray
7deb53b12fe040fe-SIN
content-length
359
1743970571.js
www.edx.org/optimizelyjs/
322 KB
99 KB
Script
General
Full URL
https://www.edx.org/optimizelyjs/1743970571.js
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
1ae7c1d2914bc65fc33d83a8777bac1d47f7a12cc4526058d4a2c8f2a9b6eef7
Security Headers
Name Value
Strict-Transport-Security max-age=2592000

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/cs50
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

x-amz-meta-pci_enabled
False
date
Thu, 29 Jun 2023 04:11:41 GMT
strict-transport-security
max-age=2592000
content-encoding
gzip
cf-cache-status
HIT
x-amz-version-id
6_N2FWgo3c_vQh8KtS8RPixuwTGtWGlh
age
256
x-amz-request-id
Z5TFYFQ8MS9RD35A
x-amz-server-side-encryption
AES256
x-amz-meta-revision
19856
x-amz-replication-status
COMPLETED
server-timing
cdn-cache; desc=HIT, edge; dur=2, origin; dur=0, cdn;desc="AkamaiION";dur=0,rtt;desc="4";dur=0,cdnip;desc="23.52.112.145";dur=0,cdnmap;desc="a5048.dsca.akamaiedge.net";dur=0,proto;desc="";dur=0, ak_p; desc="468882_389065942_2723468488_233_1404_4_-_-";dur=1
x-amz-id-2
vZvvT54xBmxh8NuR+Vp6W4IYOuNN7IdJpKrwsJvJ5Bc44gl1/38+jKetQRXgzhZJ7jBSnvbucys=
last-modified
Wed, 28 Jun 2023 18:51:23 GMT
server
cloudflare
etag
W/"540c54e47edc74a07acf2cba4265363c"
vary
Accept-Encoding
access-control-allow-methods
GET, HEAD
content-type
text/javascript; charset=utf-8
access-control-allow-origin
*
access-control-expose-headers
x-amz-meta-revision
cache-control
public, max-age=14400
access-control-max-age
86400
cf-ray
7deb53b1483b40fe-SIN
access-control-allow-headers
*
timing-allow-origin
*
expires
Thu, 29 Jun 2023 08:11:41 GMT
edx-logo-elm.svg
www.edx.org/images/logos/
3 KB
2 KB
Image
General
Full URL
https://www.edx.org/images/logos/edx-logo-elm.svg
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
dfa141dbfdad273b0451ecc91543c0cba440716998cc08fbd2fdabef5b1dc6a4
Security Headers
Name Value
Strict-Transport-Security max-age=2592000

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/cs50
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
Thu, 29 Jun 2023 04:11:41 GMT
content-encoding
gzip
cf-cache-status
HIT
last-modified
Wed, 28 Jun 2023 21:54:29 GMT
server
cloudflare
strict-transport-security
max-age=2592000
age
208
etag
W/"649cac15-c7e"
vary
Accept-Encoding
content-type
image/svg+xml
cache-control
public, max-age=3600
accept-ranges
bytes
cf-ray
7deb53b1584e40fe-SIN
content-length
1668
0.jpg
www.edx.org/contentful/ii9ehdcj88bc/2Dql1UzpTKEKUNQs2eZa3s/71ef94d1ebbb25044cfabcd23503560c/
0
0

apple-store-badge-en.svg
www.edx.org/images/logos/
11 KB
4 KB
Image
General
Full URL
https://www.edx.org/images/logos/apple-store-badge-en.svg
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
a26fc5b38380272c92e9019a2eb8b45542a66814b3e2b203772db8904b9fb99f
Security Headers
Name Value
Strict-Transport-Security max-age=2592000

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/cs50
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
Thu, 29 Jun 2023 04:11:41 GMT
content-encoding
gzip
cf-cache-status
HIT
last-modified
Wed, 28 Jun 2023 21:54:29 GMT
server
cloudflare
strict-transport-security
max-age=2592000
age
208
etag
W/"649cac15-2a34"
vary
Accept-Encoding
content-type
image/svg+xml
cache-control
public, max-age=3600
accept-ranges
bytes
cf-ray
7deb53b1685340fe-SIN
content-length
4084
google-play-badge-en.png
www.edx.org/images/logos/
4 KB
4 KB
Image
General
Full URL
https://www.edx.org/images/logos/google-play-badge-en.png
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
4cdad6960405e518ffc01c05809498e2777d08454a8ef186cb4af34a6fee8432
Security Headers
Name Value
Strict-Transport-Security max-age=2592000

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/cs50
User-Agent
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Full URL
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accept-language
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Response headers

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content-encoding
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Full URL
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Request headers

accept-language
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User-Agent
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Response headers

strict-transport-security
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content-encoding
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x-content-type-options
nosniff
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server
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H2
Security
TLS 1.3, , AES_128_GCM
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Software
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Request headers

accept-language
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Response headers

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content-encoding
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server
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etag
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General
Full URL
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Requested by
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Protocol
HTTP/1.1
Security
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Server
52.88.179.26 Boardman, United States, ASN16509 (AMAZON-02, US),
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Software
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Resource Hash
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Request headers

accept-language
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User-Agent
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Response headers

date
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content-encoding
gzip
server
istio-envoy
vary
origin,access-control-request-method,access-control-request-headers,accept-encoding
transfer-encoding
chunked
content-type
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x-envoy-upstream-service-time
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connection
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expires
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437 B
Fetch
General
Full URL
https://34.215.155.61/is
Requested by
Host: www.edx.org
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Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
34.215.155.61 Boardman, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
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Software
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Request headers

accept-language
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User-Agent
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Response headers

date
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server
istio-envoy
access-control-allow-methods
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content-type
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access-control-allow-origin
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44 KB
17 KB
Script
General
Full URL
https://js-agent.newrelic.com/nr-spa-1212.min.js
Requested by
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Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
151.101.66.137 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
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Resource Hash
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Security Headers
Name Value
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Request headers

accept-language
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User-Agent
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Response headers

x-amz-version-id
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content-encoding
gzip
via
1.1 varnish
date
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strict-transport-security
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x-cache
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etag
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6 KB
Script
General
Full URL
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Requested by
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Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
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Request headers

accept-language
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Response headers

access-control-allow-origin
*
date
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cache-control
max-age=5
content-encoding
gzip
content-type
text/javascript
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56 B
489 B
Script
General
Full URL
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Requested by
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Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
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Reverse DNS
Software
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Request headers

accept-language
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User-Agent
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Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
access-control-allow-methods
GET, POST, PUT, HEAD, OPTIONS
content-type
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access-control-allow-origin
*
access-control-allow-credentials
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Protocol
H2
Security
TLS 1.3, , AES_128_GCM
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Software
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Security Headers
Name Value
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Request headers

accept-language
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User-Agent
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Response headers

date
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content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
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vary
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content-type
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Protocol
H2
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Security Headers
Name Value
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Request headers

accept-language
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Response headers

date
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content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
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strict-transport-security
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etag
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vary
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content-type
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cache-control
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cf-ray
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Full URL
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Protocol
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Software
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Security Headers
Name Value
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Request headers

accept-language
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User-Agent
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Response headers

date
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content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
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age
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etag
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vary
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cf-ray
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472 KB
126 KB
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Full URL
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Requested by
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Protocol
H2
Security
TLS 1.3, , AES_128_GCM
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2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
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Software
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Resource Hash
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Security Headers
Name Value
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Request headers

accept-language
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Referer
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User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
content-encoding
gzip
cf-cache-status
HIT
last-modified
Wed, 28 Jun 2023 21:50:45 GMT
server
cloudflare
strict-transport-security
max-age=2592000
age
18690
etag
W/"649cab35-75e86"
vary
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content-type
application/javascript
cache-control
public, max-age=31536000, immutable
cf-ray
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1012 KB
252 KB
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General
Full URL
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Requested by
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URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
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Resource Hash
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Security Headers
Name Value
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Request headers

accept-language
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User-Agent
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Response headers

date
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content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
max-age=2592000
age
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etag
W/"649cab35-fd085"
vary
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content-type
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cache-control
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cf-ray
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TLS 1.3, , AES_128_GCM
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accept-language
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Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
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gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
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Full URL
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Requested by
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H2
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TLS 1.3, , AES_128_GCM
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2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
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Request headers

accept-language
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User-Agent
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Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
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cf-ray
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accept-language
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User-Agent
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Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
content-encoding
gzip
cf-cache-status
HIT
last-modified
Wed, 28 Jun 2023 21:50:45 GMT
server
cloudflare
strict-transport-security
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age
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Protocol
H2
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Security Headers
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Request headers

accept-language
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Referer
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User-Agent
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Response headers

date
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content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
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age
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cf-ray
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Protocol
H2
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Request headers

accept-language
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Response headers

date
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content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
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accept-language
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Response headers

date
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content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
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Full URL
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Requested by
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Protocol
H2
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Software
cloudflare /
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Security Headers
Name Value
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Request headers

accept-language
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Referer
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User-Agent
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Response headers

date
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content-encoding
gzip
cf-cache-status
HIT
last-modified
Wed, 28 Jun 2023 21:50:45 GMT
server
cloudflare
strict-transport-security
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age
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etag
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vary
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accept-ranges
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cf-ray
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Script
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Full URL
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cloudflare /
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Name Value
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Request headers

accept-language
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Referer
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User-Agent
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Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
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age
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etag
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vary
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cf-ray
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Full URL
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Requested by
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Protocol
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Security Headers
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accept-language
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Referer
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User-Agent
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Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
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age
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etag
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accept-language
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User-Agent
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Response headers

date
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content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
max-age=2592000
age
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etag
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vary
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cache-control
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cf-ray
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Full URL
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Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
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Software
cloudflare /
Resource Hash
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Security Headers
Name Value
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Request headers

accept-language
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Referer
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User-Agent
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Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
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age
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etag
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cache-control
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cf-ray
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Request headers

accept-language
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User-Agent
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Response headers

date
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content-encoding
gzip
cf-cache-status
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last-modified
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server
cloudflare
strict-transport-security
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Name Value
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Request headers

accept-language
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User-Agent
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Response headers

date
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content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
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Name Value
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Request headers

accept-language
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User-Agent
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Response headers

date
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strict-transport-security
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x-content-type-options
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p3p
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cross-origin-resource-policy
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alt-svc
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x-xss-protection
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accept-ch
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server
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x-frame-options
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vary
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content-type
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report-to
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cache-control
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Thu, 29 Jun 2023 04:11:43 GMT
branch-latest.min.js
cdn.branch.io/
73 KB
22 KB
Script
General
Full URL
https://cdn.branch.io/branch-latest.min.js
Requested by
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Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
54.192.150.62 , United States, ASN16509 (AMAZON-02, US),
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AmazonS3 /
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accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

x-amz-version-id
RcGafUhyGoCBAIKL0sPQaqgYc5MW5qY6
content-encoding
gzip
via
1.1 b4ef37917b36c601eeeeb55cdda4288c.cloudfront.net (CloudFront)
date
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last-modified
Tue, 04 Apr 2023 19:50:38 GMT
server
AmazonS3
x-amz-cf-pop
SIN2-C1
age
79
etag
"ce82fd24f9c8aae0ff0fa6e15c400c97"
x-cache
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content-type
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cache-control
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content-length
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x-amz-cf-id
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938 B
472 B
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Full URL
https://www.edx.org/fonts/async-fonts.css
Requested by
Host: www.edx.org
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Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
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cloudflare /
Resource Hash
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Security Headers
Name Value
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Request headers

accept-language
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Referer
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User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
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content-encoding
gzip
cf-cache-status
HIT
last-modified
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server
cloudflare
strict-transport-security
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age
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etag
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vary
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cache-control
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accept-ranges
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cf-ray
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322 KB
100 KB
Script
General
Full URL
https://www.edx.org/optimizelyjs/1743970571.js
Requested by
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URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6811:5dc7 , United States, ASN13335 (CLOUDFLARENET, US),
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Security Headers
Name Value
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Request headers

accept-language
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User-Agent
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Response headers

x-amz-meta-pci_enabled
False
date
Thu, 29 Jun 2023 04:11:43 GMT
strict-transport-security
max-age=2592000
content-encoding
gzip
cf-cache-status
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age
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server-timing
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last-modified
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server
cloudflare
etag
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vary
Accept-Encoding
access-control-allow-methods
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content-type
text/javascript; charset=utf-8
access-control-allow-origin
*
access-control-expose-headers
x-amz-meta-revision
cache-control
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cf-ray
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access-control-allow-headers
*
timing-allow-origin
*
expires
Thu, 29 Jun 2023 08:11:43 GMT
www-widgetapi.js
www.youtube.com/s/player/71547d26/www-widgetapi.vflset/
198 KB
62 KB
Script
General
Full URL
https://www.youtube.com/s/player/71547d26/www-widgetapi.vflset/www-widgetapi.js
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2404:6800:4003:c01::5d , Singapore, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
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Security Headers
Name Value
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Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
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content-encoding
br
x-content-type-options
nosniff
age
145135
cross-origin-resource-policy
cross-origin
alt-svc
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content-length
62878
x-xss-protection
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last-modified
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server
sffe
vary
Accept-Encoding, Origin
report-to
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content-type
text/javascript
cache-control
public, max-age=31536000
accept-ranges
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cross-origin-opener-policy-report-only
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expires
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collect
www.google-analytics.com/j/
4 B
207 B
XHR
General
Full URL
https://www.google-analytics.com/j/collect?v=1&_v=j101&a=70794178&t=pageview&_s=1&dl=https%3A%2F%2Fwww.edx.org%2Fcs50&dp=%2Fcs50&ul=en-us&de=UTF-8&dt=CS50%3A%20Computer%20Science%20Courses%20and%20Programs%20from%20Harvard%20%7C%20edX&sd=24-bit&sr=1600x1200&vp=1600x1200&je=0&_u=aHBAAEABAAAAACgCIAB~&jid=491956567&gjid=1212958616&cid=652067464.1688011902&tid=UA-35248639-2&_gid=1134976517.1688011902&_r=1&_slc=1&z=1324614472
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2404:6800:4003:c0f::71 , Singapore, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
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Security Headers
Name Value
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Request headers

Referer
https://www.edx.org/
accept-language
zh-SG,zh;q=0.9
User-Agent
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Content-Type
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Response headers

pragma
no-cache
date
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x-content-type-options
nosniff
last-modified
Sun, 17 May 1998 03:00:00 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://www.edx.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
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expires
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p
api.segment.io/v1/
21 B
172 B
Fetch
General
Full URL
https://api.segment.io/v1/p
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
52.13.30.205 Boardman, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
ec2-52-13-30-205.us-west-2.compute.amazonaws.com
Software
/
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Security Headers
Name Value
Strict-Transport-Security max-age=31536000

Request headers

Referer
https://www.edx.org/
accept-language
zh-SG,zh;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36
Content-Type
text/plain

Response headers

access-control-allow-origin
https://www.edx.org
date
Thu, 29 Jun 2023 04:11:44 GMT
strict-transport-security
max-age=31536000
content-length
21
vary
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content-type
application/json
auto-track.bundle.a9d7db192bb0f8beb329.js
cdn.segment.io/analytics-next/bundles/
2 KB
2 KB
Script
General
Full URL
https://cdn.segment.io/analytics-next/bundles/auto-track.bundle.a9d7db192bb0f8beb329.js
Requested by
Host: www.edx.org
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Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
13.224.249.70 , United States, ASN16509 (AMAZON-02, US),
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Software
AmazonS3 /
Resource Hash
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Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

Date
Fri, 12 May 2023 19:21:34 GMT
x-amz-version-id
pyK11JMFa50ej4hCsAGvUJAvun2EpUV1
Content-Encoding
gzip
Via
1.1 4c1bde06945511c934bfecb3b911c020.cloudfront.net (CloudFront)
X-Amz-Cf-Pop
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Age
4092609
x-amz-server-side-encryption
AES256
Transfer-Encoding
chunked
X-Cache
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x-amz-replication-status
COMPLETED
Connection
keep-alive
Last-Modified
Fri, 12 May 2023 16:05:19 GMT
Server
AmazonS3
ETag
W/"4422cc3b53c2ab5b4112464da476bc1a"
Access-Control-Max-Age
3000
Access-Control-Allow-Methods
GET, HEAD
Content-Type
application/javascript
Access-Control-Allow-Origin
*
Cache-Control
public,max-age=31536000,immutable
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Accept-Encoding
X-Amz-Cf-Id
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6 MB
6 MB
Image
General
Full URL
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Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:5dcd , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
cf-cache-status
HIT
x-amz-request-id
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age
10136411
cf-polished
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x-amz-id-2
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cf-bgj
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last-modified
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server
cloudflare
etag
"518729d825a56aedb98fc29d3a8fdc0a"
vary
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content-type
image/jpeg
cache-control
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accept-ranges
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cf-ray
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expires
Fri, 28 Jun 2024 04:11:43 GMT
44022f13-20df-4666-9111-cede3e5dc5b6-2cc39992c67a.png
prod-discovery.edx-cdn.org/organization/logos/
2 KB
2 KB
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General
Full URL
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Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:5dcd , United States, ASN13335 (CLOUDFLARENET, US),
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Software
cloudflare /
Resource Hash
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Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
cf-cache-status
HIT
x-amz-request-id
9QC4492XRZGS1X8R
age
1304601
cf-polished
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x-amz-id-2
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cf-bgj
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last-modified
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server
cloudflare
etag
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vary
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content-type
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cache-control
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accept-ranges
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cf-ray
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expires
Fri, 28 Jun 2024 04:11:43 GMT
64b3c632-8610-4b17-9a48-9efee7fa3266-6a1e055774b4.jpg
prod-discovery.edx-cdn.org/media/programs/card_images/
18 KB
18 KB
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General
Full URL
https://prod-discovery.edx-cdn.org/media/programs/card_images/64b3c632-8610-4b17-9a48-9efee7fa3266-6a1e055774b4.jpg
Protocol
H2
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TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:5dcd , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
cf-cache-status
HIT
x-amz-request-id
8RD2TXA9ENTTCGQ4
age
522846
cf-polished
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content-disposition
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content-length
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x-amz-id-2
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cf-bgj
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last-modified
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server
cloudflare
etag
"c792bd0798fcebc5bb926b30b855861a"
vary
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content-type
image/webp
cache-control
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accept-ranges
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cf-ray
7deb53bf3e863e59-SIN
expires
Fri, 28 Jun 2024 04:11:43 GMT
8c5c1af9-761b-49b4-9f52-f6f48856d906-569ce5564e34.jpg
prod-discovery.edx-cdn.org/media/programs/card_images/
199 KB
200 KB
Image
General
Full URL
https://prod-discovery.edx-cdn.org/media/programs/card_images/8c5c1af9-761b-49b4-9f52-f6f48856d906-569ce5564e34.jpg
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:5dcd , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
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Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
cf-cache-status
HIT
x-amz-request-id
8RD0JA9FWM6VHPTN
age
522846
cf-polished
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content-disposition
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content-length
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x-amz-id-2
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cf-bgj
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last-modified
Thu, 22 Oct 2020 12:31:09 GMT
server
cloudflare
etag
"4b2fd6be081237b845989e5817eaf046"
vary
Accept
content-type
image/webp
cache-control
public, max-age=31536000
accept-ranges
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cf-ray
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expires
Fri, 28 Jun 2024 04:11:43 GMT
e3c244be-7934-4387-8905-4fa110a6e76c-0e349cedd471.jpg
prod-discovery.edx-cdn.org/media/programs/card_images/
50 KB
51 KB
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General
Full URL
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Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:5dcd , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
Thu, 29 Jun 2023 04:11:43 GMT
cf-cache-status
HIT
x-amz-request-id
QCC3JA12V8SSSKJY
age
533380
cf-polished
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content-disposition
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content-length
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strict-transport-security
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Request headers

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Response headers

pragma
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Response headers

pragma
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x-content-type-options
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expires
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Script
General
Full URL
https://px.mountain.com/st?ga_tracking_id=UA-35248639-2%3BG-D3KS4KMDT0&ga_client_id=652067464.1688011902&shpt=CS50%3A%20Computer%20Science%20Courses%20and%20Programs%20from%20Harvard%20%7C%20edX&ga_info=%7B%22status%22%3A%22OK%22%2C%22ga_tracking_id%22%3A%22UA-35248639-2%3BG-D3KS4KMDT0%22%2C%22ga_client_id%22%3A%22652067464.1688011902%22%2C%22shpt%22%3A%22CS50%3A%20Computer%20Science%20Courses%20and%20Programs%20from%20Harvard%20%7C%20edX%22%2C%22dcm_cid%22%3A%22652067464.1688011902%22%2C%22dcm_gid%22%3A%221134976517.1688011902%22%2C%22mntnis%22%3A%22GxYr7AAC5WxWXRH%2Fiw6wydDMg3T2z36i%22%2C%22execution_workflow%22%3A%7B%22iteration%22%3A6%2C%22shpt%22%3A%22OK%22%2C%22dcm_cid%22%3A%22OK%22%2C%22dcm_gid%22%3A%22OK%22%7D%7D&dcm_cid=652067464.1688011902&dcm_gid=1134976517.1688011902&available_ga=%5B%7B%22id%22%3A%22UA-35248639-2%22%2C%22sess_id%22%3Anull%7D%5D&hardcoded_ga=UA-35248639-2%3BG-D3KS4KMDT0&dxver=4.0.0&shaid=34924&plh=https%3A%2F%2Fwww.edx.org%2Fcs50&cb=48999053567578810term%3Dvalue&shadditional=googletagmanager%3Dtrue&shoid=652067464.1688011902
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
35.81.173.170 Boardman, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
ec2-35-81-173-170.us-west-2.compute.amazonaws.com
Software
istio-envoy /
Resource Hash
3ceb10c4ea3f0bc6dafa509ed8e7f11716940a3c7cab43db8f6fd83efd1d8c55

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
Thu, 29 Jun 2023 04:11:44 GMT
content-encoding
gzip
server
istio-envoy
transfer-encoding
chunked
content-type
application/javascript;charset=utf-8
access-control-allow-origin
*
p3p
CP="NON DSP COR NID CURa ADMa DEVa PSAa PSDa OUR STP UNI COM NAV INT STA PRE"
x-envoy-upstream-service-time
0
connection
close
open
api2.branch.io/v1/
269 B
644 B
XHR
General
Full URL
https://api2.branch.io/v1/open
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:200a:e600:11:f728:3040:93a1 , United States, ASN (),
Reverse DNS
Software
/
Resource Hash
ea6d0475b94f9c5762d38abbff66b32be8f26423d35c5fc5a4d3f40779130484
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains

Request headers

Referer
https://www.edx.org/
accept-language
zh-SG,zh;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36
Content-Type
application/x-www-form-urlencoded

Response headers

date
Thu, 29 Jun 2023 04:11:44 GMT
strict-transport-security
max-age=31536000; includeSubDomains
via
1.1 0ebc10def77a5b11a9b58ccbe655bf62.cloudfront.net (CloudFront)
x-amz-cf-pop
SIN52-C3
x-cache
Miss from cloudfront
content-type
application/json; charset=utf-8
access-control-allow-origin
*
cache-control
no-cache
x-branch-request-id
947edf01-ad46-4128-9a96-e987df908692-2023062904
content-length
269
x-amz-cf-id
ndG9w5PbH0qbqEd0BQe1MOZ6Fo0XPU1krofReprTnh1wgGaFQG3agA==
1beac94c95
bam.nr-data.net/events/1/
24 B
332 B
XHR
General
Full URL
https://bam.nr-data.net/events/1/1beac94c95?a=190328954&sa=1&v=1212.e95d35c&t=Unnamed%20Transaction&rst=4883&ck=1&ref=https://www.edx.org/cs50
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
162.247.243.29 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
0c9cf152a0ad00d4f102c93c613c104914be5517ac8f8e0831727f8bfbe8b300

Request headers

Referer
https://www.edx.org/
accept-language
zh-SG,zh;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36
content-type
text/plain

Response headers

date
Thu, 29 Jun 2023 04:11:44 GMT
access-control-allow-methods
GET, POST, PUT, HEAD, OPTIONS
content-type
image/gif
access-control-allow-origin
https://www.edx.org
access-control-allow-credentials
true
Connection
keep-alive
Content-Length
24
x-served-by
cache-qpg1231-QPG
saq_pxl
tags.srv.stackadapt.com/
138 B
330 B
XHR
General
Full URL
https://tags.srv.stackadapt.com/saq_pxl?uid=0-94UFAJn-VkGWwQ6lwSnQ&is_js=true&landing_url=https%3A%2F%2Fwww.edx.org%2Fcs50&t=CS50%3A%20Computer%20Science%20Courses%20and%20Programs%20from%20Harvard%20%7C%20edX&tip=DYEsNdSPrXQeuoyv94pJyq_ag-PJk2LphWftulEkHZw&host=https://www.edx.org&sa-user-id-v2=s%253AJU9aO-mMXydZtgUzXu-79dE6otk.QdwM6R8DWwJ2%252BUTGf4rFqtU4FsAyuHloxxRpa0F0ujE&sa-user-id=s%253A0-254f5a3b-e98c-5f27-59b6-05335eefbbf5.T9nVtFlk0pQZRSVR6ue%252BmNRweOCSpytsUbCAgU7qTRQ
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
3.230.203.248 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS
ec2-3-230-203-248.compute-1.amazonaws.com
Software
/
Resource Hash
ee1fb1e688203e4527eea85e585a5bde777ea393e304debf3c4f0834efa5ad38

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

access-control-allow-origin
https://www.edx.org
date
Thu, 29 Jun 2023 04:11:44 GMT
access-control-allow-credentials
true
access-control-allow-headers
*
content-length
138
access-control-allow-methods
GET
content-type
text/plain; charset=utf-8
pageview
api2.branch.io/v1/
28 B
434 B
XHR
General
Full URL
https://api2.branch.io/v1/pageview
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:200a:e600:11:f728:3040:93a1 , United States, ASN (),
Reverse DNS
Software
/ Express
Resource Hash
a82dc28d43942326b346f92907df3bea5e38b2325ef97176f3b6234966bf19eb
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains

Request headers

Referer
https://www.edx.org/
accept-language
zh-SG,zh;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36
Content-Type
application/x-www-form-urlencoded

Response headers

date
Thu, 29 Jun 2023 04:11:44 GMT
strict-transport-security
max-age=31536000; includeSubDomains
via
1.1 0ebc10def77a5b11a9b58ccbe655bf62.cloudfront.net (CloudFront)
x-amz-cf-pop
SIN52-C3
x-powered-by
Express
etag
W/"1c-KRZWpHfIKyIHGKJ9mp9lAyX+vFY"
x-cache
Miss from cloudfront
content-type
application/json; charset=utf-8
access-control-allow-origin
*
x-branch-request-id
d29e35e5ea6546c691264c7876075ab3-2023062904
content-length
28
x-amz-cf-id
RCpAalY3JbBOrb930Gf0Io4c5mCSkQb2gWV68zEeLrWnrSEMWrd_vg==
events
logx.optimizely.com/v1/
0
356 B
XHR
General
Full URL
https://logx.optimizely.com/v1/events
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
54.85.60.128 -, , ASN (),
Reverse DNS
Software
nginx/1.21.0 /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

Referer
https://www.edx.org/
accept-language
zh-SG,zh;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36
Content-Type
text/plain;charset=UTF-8

Response headers

Date
Thu, 29 Jun 2023 04:11:45 GMT
Server
nginx/1.21.0
Content-Type
text/plain
Access-Control-Allow-Origin
https://www.edx.org
Access-Control-Expose-Headers
X-Results-Data-Source
Access-Control-Allow-Credentials
true
Connection
keep-alive
Timing-Allow-Origin
*
X-Request-Id
92d6912b-1214-4ab9-bd94-995da53b113d
gs
gs.mountain.com/
144 B
733 B
Script
General
Full URL
https://gs.mountain.com/gs
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
52.12.117.226 Boardman, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
ec2-52-12-117-226.us-west-2.compute.amazonaws.com
Software
istio-envoy /
Resource Hash
6e050be03458d039eb05c6b4b716d3947a88693ba3b27cd50c7451487368b240

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
Thu, 29 Jun 2023 04:11:45 GMT
last-modified
Thu, 01 Jan 1970 00:00:00 GMT
server
istio-envoy
access-control-allow-methods
GET, POST, OPTIONS
content-type
application/javascript;charset=utf-8
access-control-allow-origin
*
p3p
CP="NON DSP COR NID CURa ADMa DEVa PSAa PSDa OUR STP UNI COM NAV INT STA PRE"
cache-control
public, max-age=31536000
x-envoy-upstream-service-time
1
connection
close
access-control-allow-headers
Accept, Content-Type, x-requested-with, X-Custom-Header
content-length
144
x-application-context
application:prod:8080
st
px.mountain.com/
2 KB
1 KB
Script
General
Full URL
https://px.mountain.com/st?ga_tracking_id=UA-35248639-2%3BG-D3KS4KMDT0&ga_client_id=652067464.1688011902&shpt=CS50%3A%20Computer%20Science%20Courses%20and%20Programs%20from%20Harvard%20%7C%20edX&ga_info=%7B%22status%22%3A%22OK%22%2C%22ga_tracking_id%22%3A%22UA-35248639-2%3BG-D3KS4KMDT0%22%2C%22ga_client_id%22%3A%22652067464.1688011902%22%2C%22shpt%22%3A%22CS50%3A%20Computer%20Science%20Courses%20and%20Programs%20from%20Harvard%20%7C%20edX%22%2C%22dcm_cid%22%3A%22652067464.1688011902%22%2C%22dcm_gid%22%3A%221134976517.1688011902%22%2C%22mntnis%22%3A%22GxYr7AAC5WxWXRH%2Fiw6wydDMg3T2z36i%22%2C%22execution_workflow%22%3A%7B%22iteration%22%3A6%2C%22shpt%22%3A%22OK%22%2C%22dcm_cid%22%3A%22OK%22%2C%22dcm_gid%22%3A%22OK%22%7D%7D&dcm_cid=652067464.1688011902&dcm_gid=1134976517.1688011902&available_ga=%5B%7B%22id%22%3A%22UA-35248639-2%22%2C%22sess_id%22%3Anull%7D%5D&hardcoded_ga=UA-35248639-2%3BG-D3KS4KMDT0&dxver=4.0.0&shaid=34924&plh=https%3A%2F%2Fwww.edx.org%2Fcs50&shadditional=googletagmanager%3Dtrue&shoid=652067464.1688011902&cb=1688011904678641&shguid=aaab214e-79e7-39b7-b9ec-df78f62a03a4&shgts=1688011905490
Requested by
Host: www.edx.org
URL: https://www.edx.org/cs50
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
35.81.173.170 Boardman, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
ec2-35-81-173-170.us-west-2.compute.amazonaws.com
Software
istio-envoy /
Resource Hash
422b962aff597c5aca5f9c3aa114fcea7f3fda6abcad9584510b36b3eecd0f09

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.edx.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.198 Safari/537.36

Response headers

date
Thu, 29 Jun 2023 04:11:45 GMT
content-encoding
gzip
server
istio-envoy
transfer-encoding
chunked
content-type
application/javascript;charset=utf-8
access-control-allow-origin
*
p3p
CP="NON DSP COR NID CURa ADMa DEVa PSAa PSDa OUR STP UNI COM NAV INT STA PRE"
x-envoy-upstream-service-time
13
connection
close

Failed requests

These URLs were requested, but there was no response received. You will also see them in the list above.

Domain
www.edx.org
URL
https://www.edx.org/contentful/ii9ehdcj88bc/2Dql1UzpTKEKUNQs2eZa3s/71ef94d1ebbb25044cfabcd23503560c/0.jpg?w=480&h=360&fm=webp

Verdicts & Comments Add Verdict or Comment

130 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| 0 object| 1 boolean| credentialless object| onbeforetoggle object| onscrollend object| OneTrustStub function| OptanonWrapper function| gatsbyPluginSegmentPageviewCaller object| analytics object| NREUM object| newrelic function| __nr_require string| pagePath string| ___chunkMapping string| ___webpackCompilationHash object| otStubData object| webpackChunk_edx_gatsby_react_app object| webpackChunk_segment_analytics_next string| analyticsWriteKey object| __SEGMENT_INSPECTOR__ object| AnalyticsNext object| asyncRequires object| ___emitter object| ___loader function| ___push function| ___replace function| ___navigate object| Optanon object| OneTrust function| gtag object| dataLayer string| OnetrustActiveGroups string| OptanonActiveGroups object| google-tag-managerDeps function| google-tag-managerLoader object| optimizelyDeps function| optimizelyLoader object| google-analyticsDeps function| google-analyticsLoader object| webpackJsonp_name_Integration function| setImmediate function| clearImmediate function| google-tag-managerIntegration function| optimizelyIntegration object| optimizely function| google-analyticsIntegration string| GoogleAnalyticsObject function| ga function| normalize object| google_tag_data object| gaplugins object| gaGlobal object| gaData object| google_tag_manager function| postscribe object| google_tag_manager_external string| OptanonWrapperCount string| otIniGrps number| iCookieLengthDays string| sCookieName string| sSourceParameterName string| sMediumParameterName string| sCampaignParameterName string| sTermParameterName string| sContentParameterName string| sCookieDomain function| _getQueryStringValue function| _setCookie undefined| sSourceValue undefined| sMediumeValue undefined| sCampaignValue undefined| sTermValue undefined| sContentValue undefined| oCookieContent function| getCookie undefined| returningUserCookie string| ire_o function| ire function| ImpactRadiusEvent object| irEvent string| dcm_cid undefined| dcm_tid undefined| dcm_gid function| saq function| _saq object| vttjs function| WebVTT object| regeneratorRuntime object| __core-js_shared__ object| core object| FontAwesomeConfig object| ___FONT_AWESOME___ object| __REACT_INTL_CONTEXT__ function| iFrameResize object| jQuery object| ___gatsbyIntl object| experiments object| branch object| scriptUrl object| ttPolicy object| YT object| YTConfig boolean| yt_embedsEnableHouseBrandAndYtCoexistence function| onYTReady object| yt function| ytDomDomGetNextId object| ytEventsEventsListeners object| ytEventsEventsCounter object| ytglobal object| ytPubsub2Pubsub2Instance object| ytPubsub2Pubsub2SubscribedKeys object| ytPubsub2Pubsub2TopicToKeys object| ytPubsub2Pubsub2IsAsync object| ytPubsub2Pubsub2SkipSubKey object| ytNetworklessLoggingInitializationOptions object| ytPubsubPubsubInstance object| ytPubsubPubsubTopicToKeys object| ytPubsubPubsubIsSynchronous object| ytPubsubPubsubSubscribedKeys object| ytLoggingTransportTokensToCttTargetIds_ object| ytLoggingTransportTokensToJspbCttTargetIds_ object| ytLoggingGelSequenceIdObj_ undefined| _ function| setCookie number| startTime number| duration object| res object| saCookies string| current_window_url_param object| irongate

20 Cookies

Domain/Path Name / Value
.edx.org/ Name: prod-edx-cf-loc
Value: SG
.edx.org/ Name: OptanonConsent
Value: isGpcEnabled=0&datestamp=Thu+Jun+29+2023+04%3A11%3A42+GMT%2B0000+(GMT)&version=202306.1.0&browserGpcFlag=0&isIABGlobal=false&hosts=&landingPath=https%3A%2F%2Fwww.edx.org%2Fcs50&groups=C0001%3A1%2CC0003%3A1%2CC0002%3A0%2CBG55%3A0%2CC0004%3A0
.edx.org/ Name: _ga
Value: GA1.2.652067464.1688011902
.edx.org/ Name: _gid
Value: GA1.2.1134976517.1688011902
.edx.org/ Name: _gcl_au
Value: 1.1.1397261259.1688011902
.edx.org/ Name: IR_gbd
Value: edx.org
.edx.org/ Name: IR_17728
Value: 1688011902161%7C0%7C1688011902161%7C%7C
.youtube.com/ Name: YSC
Value: dHmxoENoaXI
.youtube.com/ Name: VISITOR_INFO1_LIVE
Value: _S3L8NxHLnk
.edx.org/ Name: ajs_anonymous_id
Value: 39aa9493-8150-4465-a4c2-ef230679b3c3
.edx.org/ Name: _gat
Value: 1
tags.srv.stackadapt.com/ Name: sa-user-id
Value: s%3A0-254f5a3b-e98c-5f27-59b6-05335eefbbf5.T9nVtFlk0pQZRSVR6ue%2BmNRweOCSpytsUbCAgU7qTRQ
tags.srv.stackadapt.com/ Name: sa-user-id-v2
Value: s%3AJU9aO-mMXydZtgUzXu-79dE6otk.QdwM6R8DWwJ2%2BUTGf4rFqtU4FsAyuHloxxRpa0F0ujE
.srv.stackadapt.com/ Name: sa-user-id-v2
Value: s%3AJU9aO-mMXydZtgUzXu-79dE6otk.QdwM6R8DWwJ2%2BUTGf4rFqtU4FsAyuHloxxRpa0F0ujE
.edx.org/ Name: optimizelyEndUserId
Value: oeu1688011903778r0.6266185433991265
www.edx.org/ Name: sa-user-id
Value: s%253A0-254f5a3b-e98c-5f27-59b6-05335eefbbf5.T9nVtFlk0pQZRSVR6ue%252BmNRweOCSpytsUbCAgU7qTRQ
www.edx.org/ Name: sa-user-id-v2
Value: s%253AJU9aO-mMXydZtgUzXu-79dE6otk.QdwM6R8DWwJ2%252BUTGf4rFqtU4FsAyuHloxxRpa0F0ujE
.app.link/ Name: _s
Value: RNQ92aKiZzJGgmoo1gn8gEJV1GVX4dD5AdZW9E1MDEeIoKCiRX3m5SCKZdQluPfw
.nr-data.net/ Name: JSESSIONID
Value: b5c2c71b6226876b
.mountain.com/ Name: guid
Value: 0f0df4cd-1633-11ee-84f0-cf78e2d50864

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header Value
Strict-Transport-Security max-age=2592000
X-Frame-Options DENY

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.

a1706490390.cdn.optimizely.com
api.segment.io
api2.branch.io
app.link
bam.nr-data.net
cdn.branch.io
cdn.cookielaw.org
cdn.segment.io
cdn3.optimizely.com
cs50.harvard.edu
dx.mountain.com
edx.org
geolocation.onetrust.com
gs.mountain.com
js-agent.newrelic.com
logx.optimizely.com
prod-discovery.edx-cdn.org
px.mountain.com
stats.g.doubleclick.net
tags.srv.stackadapt.com
utt.impactcdn.com
www.edx.org
www.google-analytics.com
www.google.com
www.google.com.sg
www.googletagmanager.com
www.youtube.com
www.edx.org
104.69.168.60
13.224.249.70
13.33.88.126
151.101.66.137
162.247.243.29
23.56.28.14
2404:6800:4003:c01::5d
2404:6800:4003:c01::63
2404:6800:4003:c03::5e
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