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react.dev Open in urlscan Pro
76.76.21.164  Public Scan

Go To Rescan Add Verdict Report
URL: https://react.dev/learn/typescript
Submission: On September 26 via manual from HU — Scanned from IT
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 5 IPs in 1 countries across 4 domains to perform 56 HTTP transactions. The main IP is 76.76.21.164, located in Walnut, United States and belongs to AMAZON-02, US. The main domain is react.dev. The Cisco Umbrella rank of the primary domain is 183556.
TLS certificate: Issued by R11 on September 21st 2024. Valid for: 3 months.
This is the only time react.dev was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
52 76.76.21.164 16509 (AMAZON-02)
1 172.217.18.8 15169 (GOOGLE)
1 142.250.181.238 15169 (GOOGLE)
1 172.66.44.185 13335 (CLOUDFLAR...)
56 5
Apex Domain
Subdomains		 Transfer
52 react.dev
react.dev — Cisco Umbrella Rank: 183556
760 KB
1 pages.dev
786946de.sandpack-bundler-4bw.pages.dev — Cisco Umbrella Rank: 393093 Failed
1 google-analytics.com
www.google-analytics.com — Cisco Umbrella Rank: 52
1 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 57
93 KB
56 4
Domain Requested by
52 react.dev react.dev
1 786946de.sandpack-bundler-4bw.pages.dev react.dev
1 www.google-analytics.com www.googletagmanager.com
1 www.googletagmanager.com react.dev
56 4
Subject Issuer Validity Valid
react.dev
R11		 2024-09-21 -
2024-12-20		 3 months crt.sh
*.google-analytics.com
WR2		 2024-08-26 -
2024-11-18		 3 months crt.sh
sandpack-bundler-4bw.pages.dev
WE1		 2024-09-15 -
2024-12-14		 3 months crt.sh

This page contains 2 frames:

Primary Page: https://react.dev/learn/typescript
Frame ID: 2D6FADCCFCFAFD357B8BE39FC51943F0
Requests: 54 HTTP requests in this frame

Frame: https://786946de.sandpack-bundler-4bw.pages.dev/
Frame ID: 42EBF87FA55761546A25EF764F6D647C
Requests: 2 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Using TypeScript – React

Detected technologies

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

Page Statistics

56
Requests

98 %
HTTPS

0 %
IPv6

4
Domains

4
Subdomains

5
IPs

1
Countries

853 kB
Transfer

2475 kB
Size

2
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

56 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request typescript
react.dev/learn/ 		275 KB
43 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.164 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
ac1fd32eb9c77276666b73bb2f599b63b124c9d28c013c3a9888fec1e98cee22
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Response headers

access-control-allow-origin
*
age
187282
cache-control
public, max-age=0, must-revalidate
content-disposition
inline; filename="typescript"
content-encoding
br
content-type
text/html; charset=utf-8
date
Thu, 26 Sep 2024 09:06:56 GMT
etag
W/"5ac8de527cfaf97552b77ab1c5f9de35"
server
Vercel
strict-transport-security
max-age=63072000
x-matched-path
/learn/typescript
x-vercel-cache
HIT
x-vercel-id
fra1::f2pg5-1727341616484-8903ceeab1d5
3b00a0b7727252a3.css
react.dev/_next/static/css/ 		109 KB
20 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://react.dev/_next/static/css/3b00a0b7727252a3.css
Requested by
Host: react.dev
URL: https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.164 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
8b9dd1ffcedad93c087b17b28112408ffdedc6ca7189cce86db1795ce1ac9aac
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://react.dev/learn/typescript

Response headers

strict-transport-security
max-age=63072000
cache-control
public,max-age=31536000,immutable
content-encoding
br
x-vercel-cache
HIT
etag
W/"143d9d2dc206f46044f5ddf54d00d0c7"
age
178042
x-matched-path
/_next/static/css/3b00a0b7727252a3.css
access-control-allow-origin
*
date
Thu, 26 Sep 2024 09:06:56 GMT
content-disposition
inline; filename="3b00a0b7727252a3.css"
content-type
text/css; charset=utf-8
server
Vercel
x-vercel-id
fra1::699wk-1727341616629-87deb034bb02
js
www.googletagmanager.com/gtag/ 		265 KB
93 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.googletagmanager.com/gtag/js?id=G-B1E83PJ3RT
Requested by
Host: react.dev
URL: https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
172.217.18.8 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
fra02s19-in-f8.1e100.net
Software
Google Tag Manager /
Resource Hash
0b53ee4310851728aedc6567d0a8eaa78cb1c1415ce126dca83221c4c80c02af
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://react.dev/

Response headers

content-encoding
br
report-to
{"group":"coop_reporting","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/scaffolding/ascgcycc:838:0"}],}
expires
Thu, 26 Sep 2024 09:06:57 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Thu, 26 Sep 2024 09:06:57 GMT
content-type
application/javascript; charset=UTF-8
vary
Accept-Encoding
access-control-allow-headers
Cache-Control
strict-transport-security
max-age=31536000; includeSubDomains
cache-control
private, max-age=900
cross-origin-resource-policy
cross-origin
access-control-allow-credentials
true
content-security-policy-report-only
script-src 'none'; form-action 'none'; frame-src 'none'; report-uri https://csp.withgoogle.com/csp/scaffolding/ascgcycc:838:0
access-control-allow-origin
*
cross-origin-opener-policy-report-only
same-origin; report-to=coop_reporting
content-length
94666
x-xss-protection
0
server
Google Tag Manager
webpack-37fa079efabc3d51.js
react.dev/_next/static/chunks/ 		5 KB
2 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://react.dev/_next/static/chunks/webpack-37fa079efabc3d51.js
Requested by
Host: react.dev
URL: https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.164 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
db924f9d081e52cac672c2ec63b4be5fbcab9677ed90266a0973a3b966d0ca55
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://react.dev/learn/typescript

Response headers

strict-transport-security
max-age=63072000
cache-control
public,max-age=31536000,immutable
content-encoding
br
x-vercel-cache
HIT
etag
W/"cad8ce2e0b2d62b6ff7b1e039a712471"
age
183671
x-matched-path
/_next/static/chunks/webpack-37fa079efabc3d51.js
access-control-allow-origin
*
date
Thu, 26 Sep 2024 09:06:56 GMT
content-disposition
inline; filename="webpack-37fa079efabc3d51.js"
content-type
application/javascript; charset=utf-8
server
Vercel
x-vercel-id
fra1::9bzqg-1727341616616-08f4e737e33a
framework-1f5321399f6bc226.js
react.dev/_next/static/chunks/ 		178 KB
58 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://react.dev/_next/static/chunks/framework-1f5321399f6bc226.js
Requested by
Host: react.dev
URL: https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.164 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
22553808568f5df039706cbc9d61dc3485899a6e11e48c319ddb8ec0e2a9b261
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://react.dev/learn/typescript

Response headers

strict-transport-security
max-age=63072000
cache-control
public,max-age=31536000,immutable
content-encoding
br
x-vercel-cache
HIT
etag
W/"b11487598616f6766d85b91a3f4af907"
age
176801
x-matched-path
/_next/static/chunks/framework-1f5321399f6bc226.js
access-control-allow-origin
*
date
Thu, 26 Sep 2024 09:06:56 GMT
content-disposition
inline; filename="framework-1f5321399f6bc226.js"
content-type
application/javascript; charset=utf-8
server
Vercel
x-vercel-id
fra1::46krn-1727341616616-28943600d04a
main-78a3b4c2aa4e4850.js
react.dev/_next/static/chunks/ 		92 KB
28 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://react.dev/_next/static/chunks/main-78a3b4c2aa4e4850.js
Requested by
Host: react.dev
URL: https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.164 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
aba5b772db99545122613acc819b2ad83eb32934b936b4141cc3eacc5cdb48b5
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://react.dev/learn/typescript

Response headers

strict-transport-security
max-age=63072000
cache-control
public,max-age=31536000,immutable
content-encoding
br
x-vercel-cache
HIT
etag
W/"ae775ea5f545aeb5e88a53bb497cb712"
age
173861
x-matched-path
/_next/static/chunks/main-78a3b4c2aa4e4850.js
access-control-allow-origin
*
date
Thu, 26 Sep 2024 09:06:56 GMT
content-disposition
inline; filename="main-78a3b4c2aa4e4850.js"
content-type
application/javascript; charset=utf-8
server
Vercel
x-vercel-id
fra1::kh8z2-1727341616616-295c22765b62
_app-dd0b77ea7bd5b246.js
react.dev/_next/static/chunks/pages/ 		1 KB
814 B 		Script
General
Check archive.org
Download Go to
Full URL
https://react.dev/_next/static/chunks/pages/_app-dd0b77ea7bd5b246.js
Requested by
Host: react.dev
URL: https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.164 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
3acb347dfb26bce2a8393a826e7a364cfdf9835e40d27ca52db1ec0286f78b22
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://react.dev/learn/typescript

Response headers

strict-transport-security
max-age=63072000
cache-control
public,max-age=31536000,immutable
content-encoding
br
x-vercel-cache
HIT
etag
W/"0d03090d675e55d83cf44dfdbc8e69dc"
age
185117
x-matched-path
/_next/static/chunks/pages/_app-dd0b77ea7bd5b246.js
access-control-allow-origin
*
date
Thu, 26 Sep 2024 09:06:56 GMT
content-disposition
inline; filename="_app-dd0b77ea7bd5b246.js"
content-type
application/javascript; charset=utf-8
server
Vercel
x-vercel-id
fra1::vgphs-1727341616616-4fa4938e1b4c
181-214845cf9287d64e.js
react.dev/_next/static/chunks/ 		91 KB
32 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://react.dev/_next/static/chunks/181-214845cf9287d64e.js
Requested by
Host: react.dev
URL: https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.164 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
50bc3c5f06ee8bc59a71c16690429c9b2cf98a4115e22edad77389fef4fc2ad4
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://react.dev/learn/typescript

Response headers

strict-transport-security
max-age=63072000
cache-control
public,max-age=31536000,immutable
content-encoding
br
x-vercel-cache
HIT
etag
W/"76d1a4f29607e75c739596c6182007f2"
age
181666
x-matched-path
/_next/static/chunks/181-214845cf9287d64e.js
access-control-allow-origin
*
date
Thu, 26 Sep 2024 09:06:56 GMT
content-disposition
inline; filename="181-214845cf9287d64e.js"
content-type
application/javascript; charset=utf-8
server
Vercel
x-vercel-id
fra1::49nfv-1727341616616-6af032dbbcbb
247-acc95e95aa68be54.js
react.dev/_next/static/chunks/ 		236 KB
74 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://react.dev/_next/static/chunks/247-acc95e95aa68be54.js
Requested by
Host: react.dev
URL: https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.164 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
d207e42fd943f44b7b72e0a84f3427bca180ed450e728fa73c935d1ff4446f05
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://react.dev/learn/typescript

Response headers

strict-transport-security
max-age=63072000
cache-control
public,max-age=31536000,immutable
content-encoding
br
x-vercel-cache
HIT
etag
W/"a661a9994b7ae74d063773506cfca04e"
age
181342
x-matched-path
/_next/static/chunks/247-acc95e95aa68be54.js
access-control-allow-origin
*
date
Thu, 26 Sep 2024 09:06:56 GMT
content-disposition
inline; filename="247-acc95e95aa68be54.js"
content-type
application/javascript; charset=utf-8
server
Vercel
x-vercel-id
fra1::626q5-1727341616616-7c6f2a541931
%5B%5B...markdownPath%5D%5D-11b0a336f223865f.js
react.dev/_next/static/chunks/pages/ 		10 KB
3 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://react.dev/_next/static/chunks/pages/%5B%5B...markdownPath%5D%5D-11b0a336f223865f.js
Requested by
Host: react.dev
URL: https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.164 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
a463e2437f0f5a42c2441357a462831f21e66219c4ab94fe4f222b140febcd56
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://react.dev/learn/typescript

Response headers

strict-transport-security
max-age=63072000
cache-control
public,max-age=31536000,immutable
content-encoding
br
x-vercel-cache
HIT
etag
W/"769ecf0a22f3dd8a6cc272a15cbae98f"
age
187862
x-matched-path
/_next/static/chunks/pages/%5B%5B...markdownPath%5D%5D-11b0a336f223865f.js
access-control-allow-origin
*
date
Thu, 26 Sep 2024 09:06:56 GMT
content-disposition
inline; filename="[[...markdownPath]]-11b0a336f223865f.js"
content-type
application/javascript; charset=utf-8
server
Vercel
x-vercel-id
fra1::7rvdc-1727341616616-6cf0f46e8316
_buildManifest.js
react.dev/_next/static/oavPBWYBzeYvBdXhaUWu7/ 		758 B
942 B 		Script
General
Check archive.org
Download Go to
Full URL
https://react.dev/_next/static/oavPBWYBzeYvBdXhaUWu7/_buildManifest.js
Requested by
Host: react.dev
URL: https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.164 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
97b12c619966c78000c501af33e9d24c420fa212503781f39f02b8bf354c84c7
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://react.dev/learn/typescript

Response headers

strict-transport-security
max-age=63072000
cache-control
public,max-age=31536000,immutable
x-vercel-cache
HIT
etag
"b86fbbbe5086c9dcca0a2ffd24bf3cb3"
age
185775
x-matched-path
/_next/static/oavPBWYBzeYvBdXhaUWu7/_buildManifest.js
accept-ranges
bytes
access-control-allow-origin
*
content-length
758
date
Thu, 26 Sep 2024 09:06:56 GMT
content-disposition
inline; filename="_buildManifest.js"
content-type
application/javascript; charset=utf-8
server
Vercel
x-vercel-id
fra1::4v944-1727341616616-8bfc79986925
_ssgManifest.js
react.dev/_next/static/oavPBWYBzeYvBdXhaUWu7/ 		154 B
330 B 		Script
General
Check archive.org
Download Go to
Full URL
https://react.dev/_next/static/oavPBWYBzeYvBdXhaUWu7/_ssgManifest.js
Requested by
Host: react.dev
URL: https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.164 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
e67d28a1d8ecf64e18f49e40a78e8f1fe827b7f976e40f0ec168b24b739ba490
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://react.dev/learn/typescript

Response headers

strict-transport-security
max-age=63072000
cache-control
public,max-age=31536000,immutable
x-vercel-cache
HIT
etag
"f94efc0b034dd5bf6ed6eccb3d0efe44"
age
187728
x-matched-path
/_next/static/oavPBWYBzeYvBdXhaUWu7/_ssgManifest.js
accept-ranges
bytes
access-control-allow-origin
*
content-length
154
date
Thu, 26 Sep 2024 09:06:56 GMT
content-disposition
inline; filename="_ssgManifest.js"
content-type
application/javascript; charset=utf-8
server
Vercel
x-vercel-id
fra1::7tc49-1727341616616-559ba36bf769
Source-Code-Pro-Regular.woff2
react.dev/fonts/ 		10 KB
10 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://react.dev/fonts/Source-Code-Pro-Regular.woff2
Requested by
Host: react.dev
URL: https://react.dev/learn/typescript
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.164 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
1ad7bcfc6aa0eb7ed8d7ad95196e5743d74881d8698d19322768d3c4ef4c0563
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Origin
https://react.dev
Referer
https://react.dev/learn/typescript

Response headers

strict-transport-security
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General
Check archive.org
Download Go to
Full URL
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User-Agent
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Failed requests

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

Domain
786946de.sandpack-bundler-4bw.pages.dev
URL
https://786946de.sandpack-bundler-4bw.pages.dev/

Verdicts & Comments Add Verdict or Comment

23 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.

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2 Cookies

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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
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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.

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