engineeringlibrary.org Open in urlscan Pro
23.20.92.111 Public Scan

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URL:
https://engineeringlibrary.org/reference/coefficient-of-friction
Submission: On February 16 via manual (February 16th 2024, 6:01:13 pm UTC) from PT — Scanned from PT

Summary HTTP 20 Redirects Links 7 Behaviour Indicators

Summary

This website contacted 6 IPs in 2 countries across 5 domains to perform 20 HTTP transactions. The main IP is 23.20.92.111, located in Ashburn, United States and belongs to AMAZON-AES, US. The main domain is engineeringlibrary.org.
TLS certificate: Issued by Sectigo RSA Domain Validation Secure ... on July 30th 2023. Valid for: a year.

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

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
4	23.20.92.111 23.20.92.111	14618 (AMAZON-AES) (AMAZON-AES)
2	142.250.185.72 142.250.185.72	15169 (GOOGLE) (GOOGLE)
9	104.17.24.14 104.17.24.14	13335 (CLOUDFLAR...) (CLOUDFLARENET)
2	172.217.18.14 172.217.18.14	15169 (GOOGLE) (GOOGLE)
1	216.239.34.36 216.239.34.36	15169 (GOOGLE) (GOOGLE)
20	6

4 23.20.92.111 (Ashburn, United States)

ASN14618 (AMAZON-AES, US)
PTR: ec2-23-20-92-111.compute-1.amazonaws.com

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

2 142.250.185.72 (United States)

ASN15169 (GOOGLE, US)
PTR: fra16s48-in-f8.1e100.net

www.googletagmanager.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

9 104.17.24.14 (None, )

ASN13335 (CLOUDFLARENET, US)

cdnjs.cloudflare.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 172.217.18.14 (United States)

ASN15169 (GOOGLE, US)
PTR: fra15s28-in-f14.1e100.net

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

1 216.239.34.36 (United States)

ASN15169 (GOOGLE, US)

region1.google-analytics.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
9	cloudflare.com cdnjs.cloudflare.com — Cisco Umbrella Rank: 257	250 KB
4	engineeringlibrary.org engineeringlibrary.org	61 KB
3	google-analytics.com www.google-analytics.com — Cisco Umbrella Rank: 45 region1.google-analytics.com — Cisco Umbrella Rank: 2000	21 KB
2	googletagmanager.com www.googletagmanager.com — Cisco Umbrella Rank: 52	151 KB
0	amazon-adsystem.com Failed ws-na.amazon-adsystem.com Failed
20	5

	Domain	Requested by
9	cdnjs.cloudflare.com	engineeringlibrary.org cdnjs.cloudflare.com
4	engineeringlibrary.org	engineeringlibrary.org
2	www.google-analytics.com	www.googletagmanager.com www.google-analytics.com
2	www.googletagmanager.com	engineeringlibrary.org www.googletagmanager.com
1	region1.google-analytics.com	www.googletagmanager.com
0	ws-na.amazon-adsystem.com Failed	engineeringlibrary.org
20	6

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

Domain
mechanicalc.com
pdhclassroom.com

Subject Issuer	Validity	Valid
engineeringlibrary.org Sectigo RSA Domain Validation Secure Server CA	`2023-07-30` - `2024-08-29`	a year	crt.sh
*.google-analytics.com GTS CA 1C3	`2024-01-29` - `2024-04-22`	3 months	crt.sh
sni.cloudflaressl.com Cloudflare Inc ECC CA-3	`2023-07-03` - `2024-07-02`	a year	crt.sh

This page contains 3 frames:

Primary Page: https://engineeringlibrary.org/reference/coefficient-of-friction
Frame ID: DE8804CD2AF16A32D08CD1D22D90BA7F
Requests: 18 HTTP requests in this frame

Frame: https://ws-na.amazon-adsystem.com/widgets/q?ServiceVersion=20070822&OneJS=1&Operation=GetAdHtml&MarketPlace=US&source=ss&ref=as_ss_li_til&ad_type=product_link&tracking_id=mechanicalc-20&marketplace=amazon&region=US&placement=0073398209&asins=0073398209&linkId=10598bc018bf539d5cf22411ae1484b1&show_border=true&link_opens_in_new_window=true
Frame ID: 48CEE299DA1F1458207EF4A93E76008A
Requests: 1 HTTP requests in this frame

Frame: https://ws-na.amazon-adsystem.com/widgets/q?ServiceVersion=20070822&OneJS=1&Operation=GetAdHtml&MarketPlace=US&source=ss&ref=as_ss_li_til&ad_type=product_link&tracking_id=mechanicalc-20&marketplace=amazon&region=US&placement=1118324579&asins=1118324579&linkId=a06a9c20fc871a8aa174a0d0ec4b4ecc&show_border=true&link_opens_in_new_window=true
Frame ID: 1938FEDBD2C542306C121BF2B6F16059
Requests: 1 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

Coefficient of Friction | Engineering Library

Detected technologies

MathJax (JavaScript Graphics) Expand

Overall confidence: 100%
Detected patterns

([\d.]+)?/mathjax\.js

Font Awesome (Font Scripts) Expand

Overall confidence: 100%
Detected patterns

<link[^>]* href=[^>]+(?:([\d.]+)/)?(?:css/)?font-awesome(?:\.min)?\.css
<link[^>]* href=[^>]*?(?:F|f)o(?:n|r)t-?(?:A|a)wesome(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)
(?:F|f)o(?:n|r)t-?(?:A|a)wesome(?:.*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)

Google Analytics (Analytics) Expand

Overall confidence: 100%
Detected patterns

google-analytics\.com/(?:ga|urchin|analytics)\.js

Google Tag Manager (Tag Managers) Expand

Overall confidence: 100%
Detected patterns

googletagmanager\.com/gtag/js

Page Statistics

20
Requests

90 %
HTTPS

0 %
IPv6

5
Domains

6
Subdomains

6
IPs

2
Countries

484 kB
Transfer

1190 kB
Size

4
Cookies

7 Outgoing links

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

URL: https://mechanicalc.com/
Title: Partner Websites

Search URL Search Domain Scan URL

URL: https://pdhclassroom.com/
Title: PDH Classroom

Search URL Search Domain Scan URL

URL: https://mechanicalc.com/calculators/
Title: Structural Calculators

Search URL Search Domain Scan URL

URL: https://mechanicalc.com/calculators/beam-analysis/
Title: Beam Analysis

Search URL Search Domain Scan URL

URL: https://mechanicalc.com/calculators/bolted-joint-analysis/
Title: Bolted Joints

Search URL Search Domain Scan URL

URL: https://mechanicalc.com/calculators/lifting-lug-analysis/
Title: Lug Analysis

Search URL Search Domain Scan URL

URL: https://mechanicalc.com/calculators/column-buckling/
Title: Column Buckling

Search URL Search Domain Scan URL

Redirected requests

There were HTTP redirect chains for the following requests:

20 HTTP transactions
0 data transactions

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

GET
H/1.1 200
OK Primary Request coefficient-of-friction Show response
engineeringlibrary.org/reference/ 67 KB
15 KB 522ms
226ms Document
text/html 23.20.92.111
AMAZON-AES

General

Check archive.org

Show headers Download Go to

Full URL: https://engineeringlibrary.org/reference/coefficient-of-friction
Protocol: HTTP/1.1
Security: TLS 1.2, ECDHE_RSA, AES_256_GCM
Server: 23.20.92.111 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS: ec2-23-20-92-111.compute-1.amazonaws.com
Software: nginx/1.22.1 /
Resource Hash: 405bc07eb007823119fad6cff9e62546f325ed5ef6bd524c920db9396243dfe7

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36
accept-language: pt-PT,pt;q=0.9

Response headers

Connection: keep-alive
Content-Encoding: gzip
Content-Type: text/html; charset=utf-8
Date: Fri, 16 Feb 2024 18:01:08 GMT
Server: nginx/1.22.1
Transfer-Encoding: chunked

GET
H2 200 js Show response
www.googletagmanager.com/gtag/ 191 KB
70 KB 271ms
100ms Script
application/javascript 142.250.185.72
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://www.googletagmanager.com/gtag/js?id=UA-58508834-2

Requested by

Host: engineeringlibrary.org
URL: https://engineeringlibrary.org/reference/coefficient-of-friction

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

142.250.185.72 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra16s48-in-f8.1e100.net

Software

Google Tag Manager /

Resource Hash

586a974a90a41951fbb85eaac2cee05e06216868b69dc5d18d9995e530aa2675

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains
X-Xss-Protection	0

Request headers

accept-language: pt-PT,pt;q=0.9
Referer: https://engineeringlibrary.org/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date: Fri, 16 Feb 2024 18:01:09 GMT
content-encoding: br
strict-transport-security: max-age=31536000; includeSubDomains
server: Google Tag Manager
vary: Accept-Encoding
content-type: application/javascript; charset=UTF-8
access-control-allow-origin: *
cache-control: private, max-age=900
access-control-allow-credentials: true
cross-origin-resource-policy: cross-origin
access-control-allow-headers: Cache-Control
content-length: 70863
x-xss-protection: 0
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
expires: Fri, 16 Feb 2024 18:01:09 GMT

GET
H/1.1 200
OK mechanicalc-structural-sidebar-01.webp
engineeringlibrary.org/static/img/Ads/ 2 KB
3 KB 138ms
137ms Image
image/webp 23.20.92.111
AMAZON-AES

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://engineeringlibrary.org/static/img/Ads/mechanicalc-structural-sidebar-01.webp
Requested by: Host: engineeringlibrary.org
URL: https://engineeringlibrary.org/reference/coefficient-of-friction
Protocol: HTTP/1.1
Security: TLS 1.2, ECDHE_RSA, AES_256_GCM
Server: 23.20.92.111 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS: ec2-23-20-92-111.compute-1.amazonaws.com
Software: nginx/1.22.1 /
Resource Hash: e1facdadce31eff1fa9d4b6b7399f4762659334112f86b912a4032ed20d866ae

Request headers

accept-language: pt-PT,pt;q=0.9
Referer: https://engineeringlibrary.org/reference/coefficient-of-friction
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

Date: Fri, 16 Feb 2024 18:01:09 GMT
Last-Modified: Sun, 30 Jul 2023 14:06:21 GMT
Server: nginx/1.22.1
ETag: "64c66e5d-98c"
Content-Type: image/webp
Cache-Control: max-age=31536000
Connection: keep-alive
Accept-Ranges: bytes
Content-Length: 2444
Expires: Sat, 15 Feb 2025 18:01:09 GMT

GET
H/1.1 200
OK pdh-classroom-02.webp
engineeringlibrary.org/static/img/Ads/ 35 KB
36 KB 293ms
154ms Image
image/webp 23.20.92.111
AMAZON-AES

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://engineeringlibrary.org/static/img/Ads/pdh-classroom-02.webp
Requested by: Host: engineeringlibrary.org
URL: https://engineeringlibrary.org/reference/coefficient-of-friction
Protocol: HTTP/1.1
Security: TLS 1.2, ECDHE_RSA, AES_256_GCM
Server: 23.20.92.111 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS: ec2-23-20-92-111.compute-1.amazonaws.com
Software: nginx/1.22.1 /
Resource Hash: 2812de4afb7e58f67d69d89d9316532314d31bece865077f6f758f25db75986c

Request headers

accept-language: pt-PT,pt;q=0.9
Referer: https://engineeringlibrary.org/reference/coefficient-of-friction
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

Date: Fri, 16 Feb 2024 18:01:09 GMT
Last-Modified: Sun, 30 Jul 2023 14:06:21 GMT
Server: nginx/1.22.1
ETag: "64c66e5d-8d18"
Content-Type: image/webp
Cache-Control: max-age=31536000
Connection: keep-alive
Accept-Ranges: bytes
Content-Length: 36120
Expires: Sat, 15 Feb 2025 18:01:09 GMT

GET q
ws-na.amazon-adsystem.com/widgets/ Frame 48CE 0
0

GET q
ws-na.amazon-adsystem.com/widgets/ Frame 1938 0
0

GET
H2 200 font-awesome.min.css
cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/ 30 KB
6 KB 153ms
57ms Stylesheet
text/css 104.17.24.14
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css

Requested by

Host: engineeringlibrary.org
URL: https://engineeringlibrary.org/reference/coefficient-of-friction

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.17.24.14 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

799aeb25cc0373fdee0e1b1db7ad6c2f6a0e058dfadaa3379689f583213190bd

Security Headers

Name	Value
Strict-Transport-Security	max-age=15780000
X-Content-Type-Options	nosniff

Request headers

accept-language: pt-PT,pt;q=0.9
Referer: https://engineeringlibrary.org/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date: Fri, 16 Feb 2024 18:01:09 GMT
content-encoding: br
x-content-type-options: nosniff
cf-cache-status: HIT
nel: {"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
strict-transport-security: max-age=15780000
age: 2860050
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=86400
content-length: 5631
last-modified: Mon, 04 May 2020 16:10:07 GMT
server: cloudflare
cf-cdnjs-via: cfworker/kv
etag: "5eb03e5f-7918"
vary: Accept-Encoding
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=FK3mDT1OFfyFBpgU9pF3v%2FxKkKeDyDSKH5aLpJvP2sfWbmb32hjTIqpgOZY7oDjO1iuuB6HDkhIQTel%2BoINQu1omZyP37amrS2sWXPR%2BAg%2BA2Z6ZEl8AmGTEa%2FTcYgfJ2lHsvBfa"}],"group":"cf-nel","max_age":604800}
content-type: text/css; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=30672000
accept-ranges: bytes
timing-allow-origin: *
cf-ray: 8567b1b7d8ba6932-LIS
expires: Wed, 05 Feb 2025 18:01:09 GMT

GET
H/1.1 200
OK bearFight-01e.min.js Show response
engineeringlibrary.org/static/js/ 27 KB
7 KB 416ms
145ms Script
application/javascript 23.20.92.111
AMAZON-AES

General

Check archive.org

Show headers Download Go to

Full URL: https://engineeringlibrary.org/static/js/bearFight-01e.min.js
Requested by: Host: engineeringlibrary.org
URL: https://engineeringlibrary.org/reference/coefficient-of-friction
Protocol: HTTP/1.1
Security: TLS 1.2, ECDHE_RSA, AES_256_GCM
Server: 23.20.92.111 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS: ec2-23-20-92-111.compute-1.amazonaws.com
Software: nginx/1.22.1 /
Resource Hash: 62123ecf5a8f56ebd0638c8457038a5e1b261f46dc93cb27e761e0cd9ccb53d3

Request headers

accept-language: pt-PT,pt;q=0.9
Referer: https://engineeringlibrary.org/reference/coefficient-of-friction
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

Date: Fri, 16 Feb 2024 18:01:09 GMT
Content-Encoding: gzip
Last-Modified: Sun, 30 Jul 2023 14:06:21 GMT
Server: nginx/1.22.1
ETag: W/"64c66e5d-6cb0"
Transfer-Encoding: chunked
Content-Type: application/javascript
Cache-Control: max-age=31536000
Connection: keep-alive
Expires: Sat, 15 Feb 2025 18:01:09 GMT

GET
H2 200 MathJax.js Show response
cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/ 62 KB
17 KB 154ms
58ms Script
application/javascript 104.17.24.14
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML

Requested by

Host: engineeringlibrary.org
URL: https://engineeringlibrary.org/reference/coefficient-of-friction

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.17.24.14 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

48344fd55558bbeb600062a175d052979f9ece87c7299788f8ecf16a46c87bf6

Security Headers

Name	Value
Strict-Transport-Security	max-age=15780000
X-Content-Type-Options	nosniff

Request headers

accept-language: pt-PT,pt;q=0.9
Referer: https://engineeringlibrary.org/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date: Fri, 16 Feb 2024 18:01:09 GMT
content-encoding: br
x-content-type-options: nosniff
cf-cache-status: HIT
nel: {"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
strict-transport-security: max-age=15780000
age: 2986109
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=86400
content-length: 16870
last-modified: Tue, 01 Aug 2023 18:09:52 GMT
server: cloudflare
cf-cdnjs-via: cfworker/kv
etag: "64c94a70-41e6"
vary: Accept-Encoding
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=d2PGVCHuECqKtUpGXI99nDSy0R%2BXlO1eY%2Bh6x61ewgQoOWAmtuRsFZlKBbNSPE%2FsSC21y30tg6WqFCFlYqEqNo0VPPZzMh0Gj4QzCQb71t1eN9C%2Fk751hhptmgD01SiCt0wiFXH%2B"}],"group":"cf-nel","max_age":604800}
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=30672000
accept-ranges: bytes
timing-allow-origin: *
cf-ray: 8567b1b7d8bf6932-LIS
expires: Wed, 05 Feb 2025 18:01:09 GMT

GET
H3 200 fontawesome-webfont.woff2
cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/fonts/ 75 KB
76 KB 104ms
55ms Font
application/octet-stream 104.17.24.14
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/fonts/fontawesome-webfont.woff2?v=4.7.0

Requested by

Host: cdnjs.cloudflare.com
URL: https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css

Protocol

Security

QUIC, , AES_128_GCM

Server

104.17.24.14 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

2adefcbc041e7d18fcf2d417879dc5a09997aa64d675b7a3c4b6ce33da13f3fe

Security Headers

Name	Value
Strict-Transport-Security	max-age=15780000
X-Content-Type-Options	nosniff

Request headers

Referer: https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css
Origin: https://engineeringlibrary.org
accept-language: pt-PT,pt;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date: Fri, 16 Feb 2024 18:01:09 GMT
strict-transport-security: max-age=15780000
x-content-type-options: nosniff
cf-cache-status: HIT
nel: {"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
age: 844746
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=86400
content-length: 77160
last-modified: Mon, 04 May 2020 16:10:07 GMT
server: cloudflare
cf-cdnjs-via: cfworker/kv
etag: "5eb03e5f-12d68"
vary: Accept-Encoding
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=rmuYqgapmubWrZDSotaLpp4vSl3PQp3a7b1WvxtjGiulSRzlbX5D40FQziNt0GBp4lPikyXP7luHzC%2FFfk3cWW%2ByXqf%2B5PIC03Jy5IjWyhBPvwedYto%2FEg0X3UuapFuTLKFXL1MJ"}],"group":"cf-nel","max_age":604800}
content-type: application/octet-stream; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=30672000
accept-ranges: bytes
timing-allow-origin: *
cf-ray: 8567b1b88ef66926-LIS
expires: Wed, 05 Feb 2025 18:01:09 GMT

GET
H2 200 TeX-AMS-MML_HTMLorMML.js Show response
cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/config/ 238 KB
59 KB 55ms
55ms Script
application/javascript 104.17.24.14
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/config/TeX-AMS-MML_HTMLorMML.js?V=2.7.1

Requested by

Host: cdnjs.cloudflare.com
URL: https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.17.24.14 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

8df260b35bb9f49c0d937fcbf0ec13fb661b0d281528aec977aee6a8c3f83688

Security Headers

Name	Value
Strict-Transport-Security	max-age=15780000
X-Content-Type-Options	nosniff

Request headers

accept-language: pt-PT,pt;q=0.9
Referer: https://engineeringlibrary.org/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Safari/537.36

Response headers

date: Fri, 16 Feb 2024 18:01:09 GMT
content-encoding: br
x-content-type-options: nosniff
cf-cache-status: HIT
nel: {"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
strict-transport-security: max-age=15780000
age: 5562489
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=86400
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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: ws-na.amazon-adsystem.com
URL: https://ws-na.amazon-adsystem.com/widgets/q?ServiceVersion=20070822&OneJS=1&Operation=GetAdHtml&MarketPlace=US&source=ss&ref=as_ss_li_til&ad_type=product_link&tracking_id=mechanicalc-20&marketplace=amazon&region=US&placement=0073398209&asins=0073398209&linkId=10598bc018bf539d5cf22411ae1484b1&show_border=true&link_opens_in_new_window=true

Domain: ws-na.amazon-adsystem.com
URL: https://ws-na.amazon-adsystem.com/widgets/q?ServiceVersion=20070822&OneJS=1&Operation=GetAdHtml&MarketPlace=US&source=ss&ref=as_ss_li_til&ad_type=product_link&tracking_id=mechanicalc-20&marketplace=amazon&region=US&placement=1118324579&asins=1118324579&linkId=a06a9c20fc871a8aa174a0d0ec4b4ecc&show_border=true&link_opens_in_new_window=true

Verdicts & Comments Add Verdict or Comment

17 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

4 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.

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.engineeringlibrary.org/	1970-01-21 04:04:26	Name: _ga Value: GA1.2.691665447.1708106470
.engineeringlibrary.org/	1970-01-20 18:29:52	Name: _gid Value: GA1.2.1332248353.1708106470
.engineeringlibrary.org/	1970-01-20 18:28:26	Name: _gat_gtag_UA_58508834_2 Value: 1

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.

cdnjs.cloudflare.com
engineeringlibrary.org
region1.google-analytics.com
ws-na.amazon-adsystem.com
www.google-analytics.com
www.googletagmanager.com
ws-na.amazon-adsystem.com
104.17.24.14
142.250.185.72
172.217.18.14
216.239.34.36
23.20.92.111
2812de4afb7e58f67d69d89d9316532314d31bece865077f6f758f25db75986c
2adefcbc041e7d18fcf2d417879dc5a09997aa64d675b7a3c4b6ce33da13f3fe
2cf985fbe70694eda52314ccab5a052a177691e05d90c0be44d05e57da22d001
405bc07eb007823119fad6cff9e62546f325ed5ef6bd524c920db9396243dfe7
48344fd55558bbeb600062a175d052979f9ece87c7299788f8ecf16a46c87bf6
55c77dfef369aee9bf4058c15f01b7d8c245177cd0e2a6ecb1d1ae71a7443d6f
586a974a90a41951fbb85eaac2cee05e06216868b69dc5d18d9995e530aa2675
62123ecf5a8f56ebd0638c8457038a5e1b261f46dc93cb27e761e0cd9ccb53d3
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
799aeb25cc0373fdee0e1b1db7ad6c2f6a0e058dfadaa3379689f583213190bd
83dae0116a15e94672f1b83fbaeee964420c201b4f7ed8b857d53a24e839822d
85fd9464dc77800e3e2023c5ab0f2072f206d80bd655542e0cfc0566e148b2e6
8db815a915b38f569e5c06686cae5489a9a396607915fdc21eeb052e61d6c27c
8df260b35bb9f49c0d937fcbf0ec13fb661b0d281528aec977aee6a8c3f83688
d56751df76e01b7817d3e78d493ef4b0947e468eb9706eb378bd75f59b787a3a
de36e50194320a7d3ef1ace9bd34a875a8bd458b253c061979dd628e9bf49afd
e1facdadce31eff1fa9d4b6b7399f4762659334112f86b912a4032ed20d866ae
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

engineeringlibrary.org Open in urlscan Pro 23.20.92.111 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

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Detected technologies

Page Statistics

20 Requests

90 %HTTPS

0 %IPv6

5 Domains

6 Subdomains

6 IPs

2 Countries

484 kBTransfer

1190 kBSize

4 Cookies

7 Outgoing links

Redirected requests

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

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Failed requests

Verdicts & Comments Add Verdict or Comment

17 JavaScript Global Variables

4 Cookies

Indicators

engineeringlibrary.org Open in urlscan Pro
23.20.92.111 Public Scan

Screenshot
Live screenshot

Full Image

20
Requests

90 %
HTTPS

0 %
IPv6

5
Domains

6
Subdomains

6
IPs

2
Countries

484 kB
Transfer

1190 kB
Size

4
Cookies

20 HTTP transactions
0 data transactions