v8.dev Open in urlscan Pro
199.36.158.100 Public Scan

Go To Rescan
Add Verdict Report

URL:
https://v8.dev/blog/math-random
Submission: On April 22 via manual (April 22nd 2024, 2:29:34 pm UTC) from IN — Scanned from DE

Summary HTTP 8 Redirects Links 23 Behaviour Indicators

Summary

This website contacted 1 IPs in 1 countries across 1 domains to perform 8 HTTP transactions. The main IP is 199.36.158.100, located in United States and belongs to FASTLY, US. The main domain is v8.dev. The Cisco Umbrella rank of the primary domain is 816688.
TLS certificate: Issued by GTS CA 1D4 on March 23rd 2024. Valid for: 3 months.

This is the only time v8.dev was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address		AS Autonomous System
8	199.36.158.100 199.36.158.100		54113 (FASTLY) (FASTLY)
8	1

8 199.36.158.100 (United States)

ASN54113 (FASTLY, US)

v8.dev	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
8	v8.dev v8.dev — Cisco Umbrella Rank: 816688	16 KB
8	1

	Domain	Requested by
8	v8.dev	v8.dev
8	1

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

Domain
tc39.es
en.wikipedia.org
simul.iro.umontreal.ca
github.com
medium.com
vigna.di.unimi.it
bugzilla.mozilla.org
bugs.webkit.org
chromium-review.googlesource.com
source.chromium.org
developer.mozilla.org
bugs.chromium.org
twitter.com
policies.google.com
chromium.googlesource.com
creativecommons.org

Subject Issuer	Validity	Valid
rongeka.com GTS CA 1D4	`2024-03-23` - `2024-06-21`	3 months	crt.sh

This page contains 1 frames:

Primary Page: https://v8.dev/blog/math-random
Frame ID: BDB38D5796E170A494947D1610F4AF96
Requests: 8 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

There’s Math.random(), and then there’s Math.random() · V8

Page Statistics

8
Requests

100 %
HTTPS

0 %
IPv6

1
Domains

1
Subdomains

1
IPs

1
Countries

16 kB
Transfer

36 kB
Size

0
Cookies

23 Outgoing links

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

URL: http://tc39.es/ecma262/#sec-math.random
Title: ES 2015, section 20.2.2.27

Search URL Search Domain Scan URL

URL: https://en.wikipedia.org/wiki/Pseudorandom_number_generator
Title: pseudo-random number generator

Search URL Search Domain Scan URL

URL: https://en.wikipedia.org/wiki/Cyclic_permutation
Title: permutation cycle

Search URL Search Domain Scan URL

URL: https://en.wikipedia.org/wiki/Mersenne_Twister
Title: Mersenne-Twister

Search URL Search Domain Scan URL

URL: https://en.wikipedia.org/wiki/Linear_congruential_generator
Title: LCG

Search URL Search Domain Scan URL

URL: http://simul.iro.umontreal.ca/testu01/tu01.html
Title: TestU01

Search URL Search Domain Scan URL

URL: https://github.com/v8/v8/blob/ceade6cf239e0773213d53d55c36b19231c820b5/src/js/math.js#L143
Title: recently

Search URL Search Domain Scan URL

URL: https://medium.com/@betable/tifu-by-using-math-random-f1c308c4fd9d
Title: pointed out

Search URL Search Domain Scan URL

URL: http://vigna.di.unimi.it/ftp/papers/xorshiftplus.pdf
Title: xorshift128+

Search URL Search Domain Scan URL

URL: https://github.com/v8/v8/blob/085fed0fb5c3b0136827b5d7c190b4bd1c23a23e/src/base/utils/random-number-generator.h#L102
Title: landed in V8 v4.9.41.0

Search URL Search Domain Scan URL

URL: https://bugzilla.mozilla.org/show_bug.cgi?id=322529#c99
Title: Firefox

Search URL Search Domain Scan URL

URL: https://bugs.webkit.org/show_bug.cgi?id=151641
Title: Safari

Search URL Search Domain Scan URL

URL: https://chromium-review.googlesource.com/c/v8/v8/+/1238551/5
Title: CL

Search URL Search Domain Scan URL

URL: https://source.chromium.org/chromium/chromium/src/+/main:v8/src/base/utils/random-number-generator.h;l=119?q=XorShift128&sq=&ss=chromium
Title: source code

Search URL Search Domain Scan URL

URL: https://en.wikipedia.org/wiki/Cryptographically_secure_pseudorandom_number_generator
Title: cryptographically secure

Search URL Search Domain Scan URL

URL: https://developer.mozilla.org/en-US/docs/Web/API/RandomSource/getRandomValues
Title: window.crypto.getRandomValues

Search URL Search Domain Scan URL

URL: https://bugs.chromium.org/p/v8/issues/entry?template=Defect%20report%20from%20user
Title: an issue on our bug tracker

Search URL Search Domain Scan URL

URL: https://twitter.com/hashseed
Title: @hashseed

Search URL Search Domain Scan URL

URL: https://policies.google.com/privacy
Title: Privacy

Search URL Search Domain Scan URL

URL: https://twitter.com/v8js
Title: Twitter

Search URL Search Domain Scan URL

URL: https://github.com/v8/v8.dev/tree/main/src/blog/math-random.md
Title: Edit this page on GitHub

Search URL Search Domain Scan URL

URL: https://chromium.googlesource.com/v8/v8.git/+/main/LICENSE
Title: V8’s BSD-style license

Search URL Search Domain Scan URL

URL: https://creativecommons.org/licenses/by/3.0/
Title: the Creative Commons Attribution 3.0 License

Search URL Search Domain Scan URL

Redirected requests

There were HTTP redirect chains for the following requests:

8 HTTP transactions
0 data transactions

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

GET
H2 200 Primary Request math-random Show response
v8.dev/blog/ 10 KB
3 KB 188ms
49ms Document
text/html 199.36.158.100
FASTLY

General

Check archive.org

Show headers Download Go to

Full URL

https://v8.dev/blog/math-random

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

199.36.158.100 , United States, ASN54113 (FASTLY, US),

Reverse DNS

Software

Resource Hash

0dc569fa5c20f220420f44392228aba9cafa7008547046391f285d7136f8f9e5

Security Headers

Name	Value
Strict-Transport-Security	max-age=31556926

Request headers

Accept-Language: de-DE,de;q=0.9;q=0.9
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Win32"

Response headers

accept-ranges: bytes
alt-svc: h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
cache-control: max-age=3600
content-encoding: br
content-length: 3061
content-type: text/html; charset=utf-8
date: Mon, 22 Apr 2024 14:29:30 GMT
etag: "002c16131fb8f65390b13fc598d5573af0e80557aa8b36170f5100cad24e5509-br"
last-modified: Mon, 08 Apr 2024 13:58:07 GMT
strict-transport-security: max-age=31556926
vary: x-fh-requested-host, accept-encoding
x-cache: HIT
x-cache-hits: 0
x-served-by: cache-fra-etou8220046-FRA
x-timer: S1713796171.766905,VS0,VE1

GET
H2 200 main.css
v8.dev/_css/ 11 KB
3 KB 41ms
40ms Stylesheet
text/css 199.36.158.100
FASTLY

General

Check archive.org

Show headers Download Go to

Full URL

https://v8.dev/_css/main.css

Requested by

Host: v8.dev
URL: https://v8.dev/blog/math-random

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

199.36.158.100 , United States, ASN54113 (FASTLY, US),

Reverse DNS

Software

Resource Hash

98f508b057dbe29bcdc112450cdbd3656364581317ffad4697f7d67ba433599b

Security Headers

Name	Value
Strict-Transport-Security	max-age=31556926

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://v8.dev/blog/math-random
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

x-served-by: cache-fra-etou8220046-FRA
strict-transport-security: max-age=31556926
content-encoding: br
date: Mon, 22 Apr 2024 14:29:30 GMT
last-modified: Mon, 08 Apr 2024 13:58:07 GMT
x-timer: S1713796171.811583,VS0,VE1
etag: "adb2fa813732a4b7ffcd2721151ad99f0b33119b2cae9f6eedd5e68ee0647bde-br"
vary: x-fh-requested-host, accept-encoding
x-cache: HIT
content-type: text/css; charset=utf-8
cache-control: max-age=604800
accept-ranges: bytes
alt-svc: h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
content-length: 2688
x-cache-hits: 1

GET
H2 200 dark-mode-toggle.mjs Show response
v8.dev/_js/ 8 KB
2 KB 39ms
39ms Script
text/javascript 199.36.158.100
FASTLY

General

Check archive.org

Show headers Download Go to

Full URL

https://v8.dev/_js/dark-mode-toggle.mjs

Requested by

Host: v8.dev
URL: https://v8.dev/blog/math-random

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

199.36.158.100 , United States, ASN54113 (FASTLY, US),

Reverse DNS

Software

Resource Hash

b9b26344561e510e9b68a186d429149f2a93aff7ba91462ab45a56f17f6c22df

Security Headers

Name	Value
Strict-Transport-Security	max-age=31556926

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://v8.dev/blog/math-random
Origin: https://v8.dev
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

x-served-by: cache-fra-etou8220046-FRA
strict-transport-security: max-age=31556926
content-encoding: br
date: Mon, 22 Apr 2024 14:29:30 GMT
last-modified: Mon, 08 Apr 2024 13:58:07 GMT
x-timer: S1713796171.811571,VS0,VE1
etag: "767daca3c70dce062f62b565cfdfa353413ed7860dca28ed54d659086b608f23-br"
vary: x-fh-requested-host, accept-encoding
x-cache: HIT
content-type: text/javascript;charset=utf-8
cache-control: max-age=604800
accept-ranges: bytes
alt-svc: h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
content-length: 2047
x-cache-hits: 1

GET
H2 200 main.js Show response
v8.dev/_js/ 917 B
483 B 39ms
39ms Script
text/javascript 199.36.158.100
FASTLY

General

Check archive.org

Show headers Download Go to

Full URL

https://v8.dev/_js/main.js

Requested by

Host: v8.dev
URL: https://v8.dev/blog/math-random

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

199.36.158.100 , United States, ASN54113 (FASTLY, US),

Reverse DNS

Software

Resource Hash

8719cc1802a87d5c655661cca329bece83a755099154b21eee37d447c9d3bce6

Security Headers

Name	Value
Strict-Transport-Security	max-age=31556926

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://v8.dev/blog/math-random
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

x-served-by: cache-fra-etou8220046-FRA
strict-transport-security: max-age=31556926
content-encoding: br
date: Mon, 22 Apr 2024 14:29:30 GMT
last-modified: Mon, 08 Apr 2024 13:58:07 GMT
x-timer: S1713796171.811807,VS0,VE1
etag: "8a49b93a4cf9a6f14f482637b8b606887052287a7c13e651973a463b15ba1c67-br"
vary: x-fh-requested-host, accept-encoding
x-cache: HIT
content-type: text/javascript;charset=utf-8
cache-control: max-age=604800
accept-ranges: bytes
alt-svc: h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
content-length: 334
x-cache-hits: 1

GET
H3 200 v8-outline.svg
v8.dev/_img/ 3 KB
1 KB 39ms
38ms Image
image/svg+xml 199.36.158.100
FASTLY

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://v8.dev/_img/v8-outline.svg

Requested by

Host: v8.dev
URL: https://v8.dev/_css/main.css

Protocol

Security

QUIC, , AES_256_GCM

Server

199.36.158.100 , United States, ASN54113 (FASTLY, US),

Reverse DNS

Software

Resource Hash

a76f800f6d6d1930511b3fa2d802283ace10910b837902eee6cf2afeef6ca902

Security Headers

Name	Value
Strict-Transport-Security	max-age=31556926

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://v8.dev/_css/main.css
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

x-served-by: cache-fra-etou8220053-FRA
strict-transport-security: max-age=31556926
content-encoding: br
date: Mon, 22 Apr 2024 14:29:30 GMT
last-modified: Mon, 08 Apr 2024 13:58:07 GMT
x-timer: S1713796171.854414,VS0,VE1
etag: "f2a4bc0c0a89f3f784170a3efedb08cd25b0cd4b8a11ca6427ff85add7540548-br"
vary: x-fh-requested-host, accept-encoding
x-cache: HIT
content-type: image/svg+xml
cache-control: max-age=604800
accept-ranges: bytes
alt-svc: h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
content-length: 1145
x-cache-hits: 1

GET
H3 200 yang-guo.avif
v8.dev/_img/avatars/ 4 KB
4 KB 38ms
38ms Image
image/avif 199.36.158.100
FASTLY

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://v8.dev/_img/avatars/yang-guo.avif

Requested by

Host: v8.dev
URL: https://v8.dev/blog/math-random

Protocol

Security

QUIC, , AES_256_GCM

Server

199.36.158.100 , United States, ASN54113 (FASTLY, US),

Reverse DNS

Software

Resource Hash

d849f8eba9016fb93f91ac475c7b9768ec116363461a313fa75e6ba2f6c4bf4b

Security Headers

Name	Value
Strict-Transport-Security	max-age=31556926

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://v8.dev/blog/math-random
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

x-served-by: cache-fra-etou8220053-FRA
strict-transport-security: max-age=31556926
content-encoding: br
date: Mon, 22 Apr 2024 14:29:30 GMT
last-modified: Mon, 08 Apr 2024 13:58:07 GMT
x-timer: S1713796171.864774,VS0,VE1
etag: "5136f88ed435dce8fb33faec9aba0cb832b751ecf177990e2b9b5d1f4fb281e8-br"
vary: x-fh-requested-host, accept-encoding
x-cache: HIT
content-type: image/avif
cache-control: max-age=604800
accept-ranges: bytes
alt-svc: h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
content-length: 3644
x-cache-hits: 0

GET
H3 200 moon.svg
v8.dev/_css/img/ 273 B
497 B 38ms
38ms Image
image/svg+xml 199.36.158.100
FASTLY

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://v8.dev/_css/img/moon.svg

Requested by

Host: v8.dev
URL: https://v8.dev/blog/math-random

Protocol

Security

QUIC, , AES_256_GCM

Server

199.36.158.100 , United States, ASN54113 (FASTLY, US),

Reverse DNS

Software

Resource Hash

32e79fd04d47cc0ae0a21dae1fb6da76a110593f5f2cda4e9e54296f9b932483

Security Headers

Name	Value
Strict-Transport-Security	max-age=31556926

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://v8.dev/blog/math-random
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

x-served-by: cache-fra-etou8220053-FRA
strict-transport-security: max-age=31556926
content-encoding: br
date: Mon, 22 Apr 2024 14:29:30 GMT
last-modified: Mon, 08 Apr 2024 13:58:07 GMT
x-timer: S1713796171.867447,VS0,VE1
etag: "84d114409e77cc9e8898fa734f64da0ee9c68545adc3d06a5e9128dcc4e75dc1-br"
vary: x-fh-requested-host, accept-encoding
x-cache: HIT
content-type: image/svg+xml
cache-control: max-age=604800
accept-ranges: bytes
alt-svc: h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
content-length: 189
x-cache-hits: 0

GET
H3 200 favicon.png
v8.dev/ 902 B
1 KB 39ms
38ms Other
image/png 199.36.158.100
FASTLY

General

Check archive.org

Show headers Download Go to

Full URL

https://v8.dev/favicon.png

Protocol

Security

QUIC, , AES_256_GCM

Server

199.36.158.100 , United States, ASN54113 (FASTLY, US),

Reverse DNS

Software

Resource Hash

144c51a0d000b3bdaea49ed49baa0b3eb78c7d0ae9ddf752410b0860c4f718ef

Security Headers

Name	Value
Strict-Transport-Security	max-age=31556926

Request headers

sec-ch-ua: "Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer: https://v8.dev/blog/math-random
Accept-Language: de-DE,de;q=0.9;q=0.9
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform: "Win32"

Response headers

x-served-by: cache-fra-etou8220053-FRA
strict-transport-security: max-age=31556926
content-encoding: br
date: Mon, 22 Apr 2024 14:29:30 GMT
last-modified: Mon, 08 Apr 2024 13:58:07 GMT
x-timer: S1713796171.911316,VS0,VE1
etag: "d86627bc0f21c131bdccf3cbad9c3111a7d385621c8d73ad6495110ec05416bb-br"
vary: x-fh-requested-host, accept-encoding
x-cache: HIT
content-type: image/png
cache-control: max-age=604800
accept-ranges: bytes
alt-svc: h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
content-length: 883
x-cache-hits: 1

Verdicts & Comments Add Verdict or Comment

0 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=31556926

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.

v8.dev
199.36.158.100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v8.dev Open in urlscan Pro 199.36.158.100 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page Title

Page Statistics

8 Requests

100 %HTTPS

0 %IPv6

1 Domains

1 Subdomains

1 IPs

1 Countries

16 kBTransfer

36 kBSize

0 Cookies

23 Outgoing links

Redirected requests

8 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 0 data transactions

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Verdicts & Comments Add Verdict or Comment

0 JavaScript Global Variables

0 Cookies

Security Headers

Indicators

v8.dev Open in urlscan Pro
199.36.158.100 Public Scan

Screenshot
Live screenshot

Full Image

8
Requests

100 %
HTTPS

0 %
IPv6

1
Domains

1
Subdomains

1
IPs

1
Countries

16 kB
Transfer

36 kB
Size

0
Cookies

8 HTTP transactions
0 data transactions