reactjs.org Open in urlscan Pro
2a03:b0c0:3:d0::d25:d001 Public Scan

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Submitted URL:
https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html#what-about-memoization\n
Effective URL:
https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html
Submission: On April 11 via api (April 11th 2021, 6:54:00 pm UTC) from US

Summary HTTP 58 Redirects Links 26 Behaviour Indicators

Summary

This website contacted 4 IPs in 2 countries across 3 domains to perform 58 HTTP transactions. The main IP is 2a03:b0c0:3:d0::d25:d001, located in Frankfurt am Main, Germany and belongs to DIGITALOCEAN-ASN, US. The main domain is reactjs.org.
TLS certificate: Issued by R3 on March 24th 2021. Valid for: 3 months.

This is the only time reactjs.org was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
55	2a03:b0c0:3:d... 2a03:b0c0:3:d0::d25:d001	14061 (DIGITALOC...) (DIGITALOCEAN-ASN)
1	2606:4700::68... 2606:4700::6810:7aaf	13335 (CLOUDFLAR...) (CLOUDFLARENET)
2	2a00:1450:400... 2a00:1450:4001:82b::200e	15169 (GOOGLE) (GOOGLE)
58	4

55 2a03:b0c0:3:d0::d25:d001 (Frankfurt am Main, Germany)

ASN14061 (DIGITALOCEAN-ASN, US)

reactjs.org	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2606:4700::6810:7aaf (United States)

ASN13335 (CLOUDFLARENET, US)

unpkg.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:4001:82b::200e (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.google-analytics.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
55	reactjs.org reactjs.org	430 KB
2	google-analytics.com www.google-analytics.com	19 KB
1	unpkg.com unpkg.com	34 KB
58	3

	Domain	Requested by
55	reactjs.org	reactjs.org
2	www.google-analytics.com	reactjs.org www.google-analytics.com
1	unpkg.com	reactjs.org
58	3

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

Domain
www.surveymonkey.co.uk
github.com
codesandbox.io
twitter.com
en.wikipedia.org
stackoverflow.com
discord.gg
dev.to
www.facebook.com
reactnative.dev
opensource.facebook.com

Subject Issuer	Validity	Valid
en.reactjs.org R3	`2021-03-24` - `2021-06-22`	3 months	crt.sh
sni.cloudflaressl.com Cloudflare Inc ECC CA-3	`2020-08-02` - `2021-08-02`	a year	crt.sh
*.google-analytics.com GTS CA 1O1	`2021-03-16` - `2021-06-08`	3 months	crt.sh

This page contains 1 frames:

Primary Page: https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html
Frame ID: A393EC225DA9D7EAD7F83919E74D5CCA
Requests: 60 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Statistics

58
Requests

100 %
HTTPS

100 %
IPv6

3
Domains

3
Subdomains

4
IPs

2
Countries

484 kB
Transfer

1394 kB
Size

0
Cookies

26 Outgoing links

These are links going to different origins than the main page.

URL: https://www.surveymonkey.co.uk/r/673TZ7T

Search URL Search Domain Scan URL

URL: https://github.com/facebook/react/
Title: GitHub

Search URL Search Domain Scan URL

URL: https://github.com/bvaughn
Title: Brian Vaughn

Search URL Search Domain Scan URL

URL: https://github.com/facebook/react/issues/12898
Title: makes derived state more predictable

Search URL Search Domain Scan URL

URL: https://codesandbox.io/s/m3w9zn1z8x
Title: See this demo for an example.

Search URL Search Domain Scan URL

URL: https://codesandbox.io/s/jl0w6r9w59
Title: Here is a demo that shows that happening.

Search URL Search Domain Scan URL

URL: https://codesandbox.io/s/mz2lnkjkrx
Title: See demo here.

Search URL Search Domain Scan URL

URL: https://twitter.com/brian_d_vaughn/status/959600888242307072
Title: I’ve made it myself!

Search URL Search Domain Scan URL

URL: https://codesandbox.io/s/7154w1l551
Title: Click here to see a demo of this pattern.

Search URL Search Domain Scan URL

URL: https://codesandbox.io/s/6v1znlxyxn
Title: Click here to see a demo of this pattern.

Search URL Search Domain Scan URL

URL: https://codesandbox.io/s/rjyvp7l3rq
Title: Click here to see a demo of this pattern.

Search URL Search Domain Scan URL

URL: https://codesandbox.io/s/l70krvpykl
Title: Click here to see a demo of this pattern.

Search URL Search Domain Scan URL

URL: https://en.wikipedia.org/wiki/Memoization
Title: memoization

Search URL Search Domain Scan URL

URL: https://github.com/reactjs/reactjs.org/issues/new
Title: GitHub

Search URL Search Domain Scan URL

URL: https://twitter.com/reactjs
Title: Twitter

Search URL Search Domain Scan URL

URL: https://github.com/reactjs/reactjs.org/tree/master/content/blog/2018-06-07-you-probably-dont-need-derived-state.md
Title: Edit this page

Search URL Search Domain Scan URL

URL: https://github.com/facebook/react
Title: GitHub

Search URL Search Domain Scan URL

URL: https://stackoverflow.com/questions/tagged/reactjs
Title: Stack Overflow

Search URL Search Domain Scan URL

URL: https://discord.gg/reactiflux
Title: Reactiflux Chat

Search URL Search Domain Scan URL

URL: https://dev.to/t/react
Title: DEV Community

Search URL Search Domain Scan URL

URL: https://www.facebook.com/react
Title: Facebook

Search URL Search Domain Scan URL

URL: https://github.com/facebook/react/blob/master/CODE_OF_CONDUCT.md
Title: Code of Conduct

Search URL Search Domain Scan URL

URL: https://reactnative.dev/
Title: React Native

Search URL Search Domain Scan URL

URL: https://opensource.facebook.com/legal/privacy
Title: Privacy

Search URL Search Domain Scan URL

URL: https://opensource.facebook.com/legal/terms
Title: Terms

Search URL Search Domain Scan URL

URL: https://opensource.facebook.com/projects/

Search URL Search Domain Scan URL

Redirected requests

There were HTTP redirect chains for the following requests:

58 HTTP transactions
2 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H2 200 Primary Request you-probably-dont-need-derived-state.html Show response
reactjs.org/blog/2018/06/07/ 149 KB
31 KB 30ms
7ms Document
text/html 2a03:b0c0:3:d0::d25:d001
DIGITALOCEAN-ASN

General

Check archive.org

Show headers Download Go to

Full URL

https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2a03:b0c0:3:d0::d25:d001 Frankfurt am Main, Germany, ASN14061 (DIGITALOCEAN-ASN, US),

Reverse DNS

Software

Netlify /

Resource Hash

fff0f9b7ec63a6ecd7960152f757bd5572de13f63604a1804d4fd6a4e84a8d4b

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1; mode=block

Request headers

:method: GET
:authority: reactjs.org
:scheme: https
:path: /blog/2018/06/07/you-probably-dont-need-derived-state.html
pragma: no-cache
cache-control: no-cache
upgrade-insecure-requests: 1
user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36
accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
sec-fetch-site: none
sec-fetch-mode: navigate
sec-fetch-user: ?1
sec-fetch-dest: document
accept-encoding: gzip, deflate, br
accept-language: en-US
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36

Response headers

cache-control: public, max-age=0, must-revalidate
content-type: text/html; charset=UTF-8
date: Sat, 10 Apr 2021 19:08:50 GMT
etag: "3c1d3e6503c9ae04c9e18f4cb35cd99e-ssl-df"
link: </webpack-runtime-732352b70a6d0733ac95.js>; rel=preload; as=script, </styles-fb708593b484b04b1765.js>; rel=preload; as=script, </framework-ff9c508ebfda0f33cb0b.js>; rel=preload; as=script, </app-29f0dda2fca2a93e9cea.js>; rel=preload; as=script, </commons-ff1af8b35ccdc11f6b23.js>; rel=preload; as=script, </3e8f09252b6028beb8baf8cc63801156f5861675-a30b52c415707d90ab94.js>; rel=preload; as=script, </1ed44328c19c4a4d76fd533f20afa4a4705f4d6f-03376ae30134e25124bc.js>; rel=preload; as=script, </component---src-templates-blog-js-6b7f0dca4865e3166815.js>; rel=preload; as=script, </page-data/app-data.json>; rel=preload; as=fetch; crossorigin, </page-data/blog/2018/06/07/you-probably-dont-need-derived-state.html/page-data.json>; rel=preload; as=fetch; crossorigin
referrer-policy: same-origin
strict-transport-security: max-age=31536000
x-content-type-options: nosniff
x-frame-options: DENY
x-xss-protection: 1; mode=block
content-encoding: br
content-length: 30736
age: 85491
server: Netlify
vary: Accept-Encoding
x-nf-request-id: 20a59239-2534-41c6-ac88-41e5f9587d3b-58351133

GET
H2 200 webpack-runtime-732352b70a6d0733ac95.js Show response
reactjs.org/ 3 KB
2 KB 11ms
9ms Script
application/javascript 2a03:b0c0:3:d0::d25:d001
DIGITALOCEAN-ASN

General

Check archive.org

Show headers Download Go to

Full URL

https://reactjs.org/webpack-runtime-732352b70a6d0733ac95.js

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2a03:b0c0:3:d0::d25:d001 Frankfurt am Main, Germany, ASN14061 (DIGITALOCEAN-ASN, US),

Reverse DNS

Software

Netlify /

Resource Hash

94de4fb26fe982738e96fcfcf645357cf034330e0324b2ba3d8776c5a3a63c77

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1; mode=block

Request headers

Referer: https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36

Response headers

x-nf-request-id: 20a59239-2534-41c6-ac88-41e5f9587d3b-58351140
date: Sun, 11 Apr 2021 13:43:18 GMT
content-encoding: br
x-content-type-options: nosniff
age: 18623
strict-transport-security: max-age=31536000
content-length: 1626
x-xss-protection: 1; mode=block
referrer-policy: same-origin
server: Netlify
x-frame-options: DENY
etag: "eecb4b629f0515513d7950607b7ad7c6-ssl-df"
vary: Accept-Encoding
content-type: application/javascript
cache-control: public,max-age=31536000,immutable
accept-ranges: bytes

GET
H2 200 styles-fb708593b484b04b1765.js Show response
reactjs.org/ 118 B
255 B 11ms
9ms Script
application/javascript 2a03:b0c0:3:d0::d25:d001
DIGITALOCEAN-ASN

General

Check archive.org

Show headers Download Go to

Full URL

https://reactjs.org/styles-fb708593b484b04b1765.js

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2a03:b0c0:3:d0::d25:d001 Frankfurt am Main, Germany, ASN14061 (DIGITALOCEAN-ASN, US),

Reverse DNS

Software

Netlify /

Resource Hash

ddb80f6901faadb4560c533efa13d4b35dd3713cc7e41911d38fa9d011e5d143

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1; mode=block

Request headers

Referer: https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36

Response headers

x-nf-request-id: 20a59239-2534-41c6-ac88-41e5f9587d3b-58351141
date: Sat, 10 Apr 2021 17:45:01 GMT
referrer-policy: same-origin
server: Netlify
age: 90520
etag: "3fd75affede095dd45674c5a898a9885-ssl"
x-frame-options: DENY
content-type: application/javascript
cache-control: public,max-age=31536000,immutable
x-content-type-options: nosniff
strict-transport-security: max-age=31536000
accept-ranges: bytes
content-length: 118
x-xss-protection: 1; mode=block

GET
H2 200 framework-ff9c508ebfda0f33cb0b.js Show response
reactjs.org/ 127 KB
39 KB 11ms
9ms Script
application/javascript 2a03:b0c0:3:d0::d25:d001
DIGITALOCEAN-ASN

General

Check archive.org

Show headers Download Go to

Full URL

https://reactjs.org/framework-ff9c508ebfda0f33cb0b.js

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2a03:b0c0:3:d0::d25:d001 Frankfurt am Main, Germany, ASN14061 (DIGITALOCEAN-ASN, US),

Reverse DNS

Software

Netlify /

Resource Hash

ef65760922de53052b33e91184f04fa6c0dac61f72dc14eaffa28772dedbb4e1

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1; mode=block

Request headers

Referer: https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36

Response headers

x-nf-request-id: 20a59239-2534-41c6-ac88-41e5f9587d3b-58351143
date: Sun, 11 Apr 2021 13:43:18 GMT
content-encoding: br
x-content-type-options: nosniff
age: 18623
strict-transport-security: max-age=31536000
content-length: 40312
x-xss-protection: 1; mode=block
referrer-policy: same-origin
server: Netlify
x-frame-options: DENY
etag: "b7c6dace97992fbdd04c236370a30d21-ssl-df"
vary: Accept-Encoding
content-type: application/javascript
cache-control: public,max-age=31536000,immutable
accept-ranges: bytes

GET
H2 200 app-29f0dda2fca2a93e9cea.js Show response
reactjs.org/ 180 KB
47 KB 11ms
9ms Script
application/javascript 2a03:b0c0:3:d0::d25:d001
DIGITALOCEAN-ASN

General

Check archive.org

Show headers Download Go to

Full URL

https://reactjs.org/app-29f0dda2fca2a93e9cea.js

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2a03:b0c0:3:d0::d25:d001 Frankfurt am Main, Germany, ASN14061 (DIGITALOCEAN-ASN, US),

Reverse DNS

Software

Netlify /

Resource Hash

15a21405d30ae9ee9720652b4fdf93f0461db97bf8502d28618439943f8f38c3

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1; mode=block

Request headers

Referer: https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36

Response headers

x-nf-request-id: 20a59239-2534-41c6-ac88-41e5f9587d3b-58351144
date: Sun, 11 Apr 2021 13:48:41 GMT
content-encoding: br
x-content-type-options: nosniff
age: 18300
strict-transport-security: max-age=31536000
content-length: 48469
x-xss-protection: 1; mode=block
referrer-policy: same-origin
server: Netlify
x-frame-options: DENY
etag: "0938c161741967de1bac88829c41a2bc-ssl-df"
vary: Accept-Encoding
content-type: application/javascript
cache-control: public,max-age=31536000,immutable
accept-ranges: bytes

GET
H2 200 commons-ff1af8b35ccdc11f6b23.js Show response
reactjs.org/ 35 KB
13 KB 21ms
19ms Script
application/javascript 2a03:b0c0:3:d0::d25:d001
DIGITALOCEAN-ASN

General

Check archive.org

Show headers Download Go to

Full URL

https://reactjs.org/commons-ff1af8b35ccdc11f6b23.js

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2a03:b0c0:3:d0::d25:d001 Frankfurt am Main, Germany, ASN14061 (DIGITALOCEAN-ASN, US),

Reverse DNS

Software

Netlify /

Resource Hash

94fb632c7d526934a265425366d2659b512d0c521a93a7e376ff44447410a89d

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1; mode=block

Request headers

Referer: https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36

Response headers

x-nf-request-id: 20a59239-2534-41c6-ac88-41e5f9587d3b-58351145
date: Sun, 11 Apr 2021 12:35:37 GMT
content-encoding: br
x-content-type-options: nosniff
age: 22684
strict-transport-security: max-age=31536000
content-length: 12870
x-xss-protection: 1; mode=block
referrer-policy: same-origin
server: Netlify
x-frame-options: DENY
etag: "254cb49c9f56bcad90b452208efa8c7b-ssl-df"
vary: Accept-Encoding
content-type: application/javascript
cache-control: public,max-age=31536000,immutable
accept-ranges: bytes

GET
H2 200 3e8f09252b6028beb8baf8cc63801156f5861675-a30b52c415707d90ab94.js Show response
reactjs.org/ 23 KB
8 KB 11ms
9ms Script
application/javascript 2a03:b0c0:3:d0::d25:d001
DIGITALOCEAN-ASN

General

Check archive.org

Show headers Download Go to

Full URL

https://reactjs.org/3e8f09252b6028beb8baf8cc63801156f5861675-a30b52c415707d90ab94.js

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2a03:b0c0:3:d0::d25:d001 Frankfurt am Main, Germany, ASN14061 (DIGITALOCEAN-ASN, US),

Reverse DNS

Software

Netlify /

Resource Hash

477859d690d18eeb9241c9a7681f9f1c9505fd4103984d19059f3d3010904259

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1; mode=block

Request headers

Referer: https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36

Response headers

x-nf-request-id: 20a59239-2534-41c6-ac88-41e5f9587d3b-58351146
date: Sun, 11 Apr 2021 13:48:42 GMT
content-encoding: br
x-content-type-options: nosniff
age: 18299
strict-transport-security: max-age=31536000
content-length: 7869
x-xss-protection: 1; mode=block
referrer-policy: same-origin
server: Netlify
x-frame-options: DENY
etag: "6c69479242c4fee755fc2b57b202a2a5-ssl-df"
vary: Accept-Encoding
content-type: application/javascript
cache-control: public,max-age=31536000,immutable
accept-ranges: bytes

GET
H2 200 1ed44328c19c4a4d76fd533f20afa4a4705f4d6f-03376ae30134e25124bc.js Show response
reactjs.org/ 18 KB
6 KB 11ms
9ms Script
application/javascript 2a03:b0c0:3:d0::d25:d001
DIGITALOCEAN-ASN

General

Check archive.org

Show headers Download Go to

Full URL

https://reactjs.org/1ed44328c19c4a4d76fd533f20afa4a4705f4d6f-03376ae30134e25124bc.js

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2a03:b0c0:3:d0::d25:d001 Frankfurt am Main, Germany, ASN14061 (DIGITALOCEAN-ASN, US),

Reverse DNS

Software

Netlify /

Resource Hash

88bf73ebb36a3391c154add71b9b3c8002b45498468b1c97d3ed3d03fb6874f0

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1; mode=block

Request headers

Referer: https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36

Response headers

x-nf-request-id: 20a59239-2534-41c6-ac88-41e5f9587d3b-58351147
date: Sat, 10 Apr 2021 22:36:26 GMT
content-encoding: br
x-content-type-options: nosniff
age: 73035
strict-transport-security: max-age=31536000
content-length: 6429
x-xss-protection: 1; mode=block
referrer-policy: same-origin
server: Netlify
x-frame-options: DENY
etag: "fc1d4a29304feef836b78f35ab43b267-ssl-df"
vary: Accept-Encoding
content-type: application/javascript
cache-control: public,max-age=31536000,immutable
accept-ranges: bytes

GET
H2 200 component---src-templates-blog-js-6b7f0dca4865e3166815.js Show response
reactjs.org/ 11 KB
4 KB 15ms
12ms Script
application/javascript 2a03:b0c0:3:d0::d25:d001
DIGITALOCEAN-ASN

General

Check archive.org

Show headers Download Go to

Full URL

https://reactjs.org/component---src-templates-blog-js-6b7f0dca4865e3166815.js

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2a03:b0c0:3:d0::d25:d001 Frankfurt am Main, Germany, ASN14061 (DIGITALOCEAN-ASN, US),

Reverse DNS

Software

Netlify /

Resource Hash

0e4d1e0646fcf5f5fc968b11a600e007872ffd5b888bbfa8491b587585dfd532

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
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x-xss-protection: 1; mode=block
referrer-policy: same-origin
server: Netlify
x-frame-options: DENY
etag: "dd25c43a0f7ab21b17e10a7298c7bdd8-ssl-df"
vary: Accept-Encoding
content-type: application/javascript
cache-control: public,max-age=31536000,immutable
accept-ranges: bytes

GET
H2 200 component---src-pages-versions-js-29670ada5c88e7f2cb4e.js
reactjs.org/ 0
1 KB 6ms
6ms Other
application/javascript 2a03:b0c0:3:d0::d25:d001
DIGITALOCEAN-ASN

General

Check archive.org

Show headers Download Go to

Full URL

https://reactjs.org/component---src-pages-versions-js-29670ada5c88e7f2cb4e.js

Requested by

Host: reactjs.org
URL: https://reactjs.org/app-29f0dda2fca2a93e9cea.js

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2a03:b0c0:3:d0::d25:d001 Frankfurt am Main, Germany, ASN14061 (DIGITALOCEAN-ASN, US),

Reverse DNS

Software

Netlify /

Resource Hash

e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1; mode=block

Request headers

Referer: https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36

Response headers

x-nf-request-id: 20a59239-2534-41c6-ac88-41e5f9587d3b-58352250
date: Sun, 11 Apr 2021 13:36:02 GMT
content-encoding: br
x-content-type-options: nosniff
age: 19061
strict-transport-security: max-age=31536000
content-length: 1280
x-xss-protection: 1; mode=block
referrer-policy: same-origin
server: Netlify
x-frame-options: DENY
etag: "90799cf5dcbbfc26c231f7efde8cdf0d-ssl-df"
vary: Accept-Encoding
content-type: application/javascript
cache-control: public,max-age=31536000,immutable
accept-ranges: bytes

GET
H2 200 component---src-pages-blog-all-html-js-ff3a6804977126f37ef8.js
reactjs.org/ 0
1 KB 8ms
7ms Other
application/javascript 2a03:b0c0:3:d0::d25:d001
DIGITALOCEAN-ASN

General

Check archive.org

Show headers Download Go to

Full URL

https://reactjs.org/component---src-pages-blog-all-html-js-ff3a6804977126f37ef8.js

Requested by

Host: reactjs.org
URL: https://reactjs.org/app-29f0dda2fca2a93e9cea.js

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2a03:b0c0:3:d0::d25:d001 Frankfurt am Main, Germany, ASN14061 (DIGITALOCEAN-ASN, US),

Reverse DNS

Software

Netlify /

Resource Hash

e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1; mode=block

Request headers

Referer: https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36

Response headers

x-nf-request-id: 20a59239-2534-41c6-ac88-41e5f9587d3b-58352253
date: Sun, 11 Apr 2021 12:13:40 GMT
content-encoding: br
x-content-type-options: nosniff
age: 24003
strict-transport-security: max-age=31536000
content-length: 1099
x-xss-protection: 1; mode=block
referrer-policy: same-origin
server: Netlify
x-frame-options: DENY
etag: "7905a44086e61372bfa751ae2e36848e-ssl-df"
vary: Accept-Encoding
content-type: application/javascript
cache-control: public,max-age=31536000,immutable
accept-ranges: bytes

Verdicts & Comments Add Verdict or Comment

32 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.

0 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

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=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1; mode=block

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.

reactjs.org
unpkg.com
www.google-analytics.com
2606:4700::6810:7aaf
2a00:1450:4001:82b::200e
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reactjs.org Open in urlscan Pro 2a03:b0c0:3:d0::d25:d001 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page Statistics

58 Requests

100 %HTTPS

100 %IPv6

3 Domains

3 Subdomains

4 IPs

2 Countries

484 kBTransfer

1394 kBSize

0 Cookies

26 Outgoing links

Redirected requests

58 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 2 data transactions

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reactjs.org Open in urlscan Pro
2a03:b0c0:3:d0::d25:d001 Public Scan

Screenshot
Live screenshot

Full Image

58
Requests

100 %
HTTPS

100 %
IPv6

3
Domains

3
Subdomains

4
IPs

2
Countries

484 kB
Transfer

1394 kB
Size

0
Cookies

58 HTTP transactions
2 data transactions