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21lessons.com Open in urlscan Pro
185.199.110.153  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://21lessons.com/
Effective URL: https://21lessons.com/
Submission: On March 15 via api from US — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 4 IPs in 2 countries across 4 domains to perform 12 HTTP transactions. The main IP is 185.199.110.153, located in United States and belongs to FASTLY, US. The main domain is 21lessons.com.
TLS certificate: Issued by R3 on March 5th 2024. Valid for: 3 months.
This is the only time 21lessons.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 1 185.199.109.153 54113 (FASTLY)
7 185.199.110.153 54113 (FASTLY)
2 2606:4700::68... 13335 (CLOUDFLAR...)
2 2a00:1450:400... 15169 (GOOGLE)
12 4
Apex Domain
Subdomains		 Transfer
8 21lessons.com
21lessons.com
189 KB
2 gstatic.com
fonts.gstatic.com
31 KB
2 cloudflare.com
cdnjs.cloudflare.com — Cisco Umbrella Rank: 253
86 KB
0 amazon-adsystem.com Failed
z-na.amazon-adsystem.com Failed
12 4
Domain Requested by
8 21lessons.com 1 redirects 21lessons.com
2 fonts.gstatic.com 21lessons.com
2 cdnjs.cloudflare.com 21lessons.com
cdnjs.cloudflare.com
0 z-na.amazon-adsystem.com Failed 21lessons.com
12 4
Subject Issuer Validity Valid
21lessons.com
R3		 2024-03-05 -
2024-06-03		 3 months crt.sh
sni.cloudflaressl.com
Cloudflare Inc ECC CA-3		 2023-07-03 -
2024-07-02		 a year crt.sh
*.gstatic.com
GTS CA 1C3		 2024-02-19 -
2024-05-13		 3 months crt.sh

This page contains 1 frames:

Primary Page: https://21lessons.com/
Frame ID: D311D53AD344B291E057403C0F29C159
Requests: 12 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

21 Lessons - What I've Learned from Falling Down the Bitcoin Rabbit Hole - 21Lessons.com

Page URL History Show full URLs

  1. http://21lessons.com/ HTTP 301
    https://21lessons.com/ Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • <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]+)?)?)|)

Page Statistics

12
Requests

92 %
HTTPS

50 %
IPv6

4
Domains

4
Subdomains

4
IPs

2
Countries

305 kB
Transfer

469 kB
Size

0
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. http://21lessons.com/ HTTP 301
    https://21lessons.com/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

12 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
21lessons.com/
Redirect Chain
  • http://21lessons.com/
  • https://21lessons.com/
8 KB
3 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://21lessons.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.110.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-110-153.github.com
Software
GitHub.com /
Resource Hash
76e93f0c2e0ad58d2b3b46eaea2bd27830a5b4699f25fc0b17c2d32c7241c2e2
Security Headers
Name Value
Strict-Transport-Security max-age=31556952

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.128 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

accept-ranges
bytes
access-control-allow-origin
*
age
0
cache-control
max-age=600
content-encoding
gzip
content-length
2618
content-type
text/html; charset=utf-8
date
Fri, 15 Mar 2024 13:13:25 GMT
etag
W/"65bb967e-2005"
expires
Fri, 15 Mar 2024 07:06:21 GMT
last-modified
Thu, 01 Feb 2024 13:02:54 GMT
server
GitHub.com
strict-transport-security
max-age=31556952
vary
Accept-Encoding
via
1.1 varnish
x-cache
HIT
x-cache-hits
1
x-fastly-request-id
ff85ec84167d9ab62a22577ee9a8e3f3bf9b3388
x-github-request-id
E9C6:0E85:25758F0:261902A:65F3F115
x-proxy-cache
MISS
x-served-by
cache-fra-etou8220115-FRA
x-timer
S1710508405.941579,VS0,VE99

Redirect headers

Accept-Ranges
bytes
Age
3008
Connection
keep-alive
Content-Length
162
Content-Type
text/html
Date
Fri, 15 Mar 2024 13:13:24 GMT
Location
https://21lessons.com/
Server
GitHub.com
Vary
Accept-Encoding
Via
1.1 varnish
X-Cache
HIT
X-Cache-Hits
1
X-Fastly-Request-ID
419e3e13b945afb872311004456ffed6b4bd3052
X-GitHub-Request-Id
DFF6:2F88A7:A8D39:AAE8B:65F43DB4
X-Served-By
cache-fra-etou8220043-FRA
X-Timer
S1710508405.818528,VS0,VE1
app.min.css
21lessons.com/assets/css/ 		43 KB
8 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://21lessons.com/assets/css/app.min.css
Requested by
Host: 21lessons.com
URL: https://21lessons.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.110.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-110-153.github.com
Software
GitHub.com /
Resource Hash
e27f5791eb8cc3d91206e36686698b3cd54d7b055c890f8770005375b0488577
Security Headers
Name Value
Strict-Transport-Security max-age=31556952

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://21lessons.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.128 Safari/537.36

Response headers

x-fastly-request-id
3c821f0e9b6f08ea77d68c1e32c6aefe3cf982e4
strict-transport-security
max-age=31556952
content-encoding
gzip
via
1.1 varnish
date
Fri, 15 Mar 2024 13:13:25 GMT
age
0
x-cache
HIT
x-cache-hits
1
x-proxy-cache
MISS
content-length
7587
x-served-by
cache-fra-etou8220115-FRA
last-modified
Thu, 01 Feb 2024 13:02:54 GMT
server
GitHub.com
x-github-request-id
D79C:0EAC:234880E:23E3FA4:65F3F3ED
x-timer
S1710508405.082634,VS0,VE102
etag
W/"65bb967e-ada8"
vary
Accept-Encoding
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
max-age=600
accept-ranges
bytes
expires
Fri, 15 Mar 2024 07:18:29 GMT
all.min.css
cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.0/css/ 		57 KB
11 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.0/css/all.min.css
Requested by
Host: 21lessons.com
URL: https://21lessons.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6811:180e , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
876d023d9d10c97941b80c3b03e2a5b94631ff7a4af9cee5604a6a2d39718d84
Security Headers
Name Value
Strict-Transport-Security max-age=15780000
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://21lessons.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.128 Safari/537.36

Response headers

date
Fri, 15 Mar 2024 13:13:25 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
147475
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
content-length
10301
last-modified
Mon, 04 May 2020 16:10:08 GMT
server
cloudflare
cf-cdnjs-via
cfworker/kv
etag
"5eb03e60-e4d2"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=fXLl%2Bs57tzTl02X8v2UJOYV%2BUz%2F20id4pBGemyPVScoC2UFb0rKk2d8acTmWDOFU1MpXYczqJL6GqPsDdYdiN9NRk9bOn6HEOiAgUZPxzuQCKymRcyvAHMhZglYiplJuWbK7Rjp3E%2B6c31ZB4JJO7E5N"}],"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
864cc2bc4e118f36-FRA
expires
Wed, 05 Mar 2025 13:13:25 GMT
avatar.jpg
21lessons.com/assets/images/ 		42 KB
42 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://21lessons.com/assets/images/avatar.jpg
Requested by
Host: 21lessons.com
URL: https://21lessons.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.110.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-110-153.github.com
Software
GitHub.com /
Resource Hash
d386aa765ad87c2b9ad87f6b09f61ba6819cc514d956b8d281816d390ac7e900
Security Headers
Name Value
Strict-Transport-Security max-age=31556952

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://21lessons.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.128 Safari/537.36

Response headers

x-fastly-request-id
9a6576da975665dd5441d7aa51199d8c05bd4e7c
strict-transport-security
max-age=31556952
date
Fri, 15 Mar 2024 13:13:25 GMT
via
1.1 varnish
x-cache-hits
1
age
0
x-cache
HIT
x-proxy-cache
MISS
content-length
43032
x-served-by
cache-fra-etou8220115-FRA
last-modified
Thu, 01 Feb 2024 13:02:53 GMT
server
GitHub.com
x-github-request-id
5C82:0E81:55FA352:57644B7:65F3E2BE
x-timer
S1710508405.082920,VS0,VE103
etag
"65bb967d-a818"
vary
Accept-Encoding
content-type
image/jpeg
access-control-allow-origin
*
cache-control
max-age=600
accept-ranges
bytes
expires
Fri, 15 Mar 2024 06:05:10 GMT
21-lessons-book-ebook-audiobook.webp
21lessons.com/assets/images/ 		84 KB
84 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://21lessons.com/assets/images/21-lessons-book-ebook-audiobook.webp
Requested by
Host: 21lessons.com
URL: https://21lessons.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.110.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-110-153.github.com
Software
GitHub.com /
Resource Hash
87dab5b4b2618536ee0eb06257c3906d77c9a85ada495bb6d88a8e8dce2586ba
Security Headers
Name Value
Strict-Transport-Security max-age=31556952

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://21lessons.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.128 Safari/537.36

Response headers

x-fastly-request-id
a0adeb1101dd1d470455e9da592056ad31dd4d90
strict-transport-security
max-age=31556952
date
Fri, 15 Mar 2024 13:13:25 GMT
via
1.1 varnish
x-cache-hits
1
age
0
x-cache
HIT
x-proxy-cache
MISS
content-length
86078
x-served-by
cache-fra-etou8220115-FRA
last-modified
Thu, 01 Feb 2024 13:02:53 GMT
server
GitHub.com
x-github-request-id
4366:0DCE:6C98BCE:6E6603C:65F402EF
x-timer
S1710508405.082809,VS0,VE98
etag
"65bb967d-1503e"
vary
Accept-Encoding
content-type
image/webp
access-control-allow-origin
*
cache-control
max-age=600
accept-ranges
bytes
x-origin-cache
HIT
expires
Fri, 15 Mar 2024 08:22:31 GMT
flags.webp
21lessons.com/assets/images/ 		5 KB
5 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://21lessons.com/assets/images/flags.webp
Requested by
Host: 21lessons.com
URL: https://21lessons.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.110.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-110-153.github.com
Software
GitHub.com /
Resource Hash
ed1ee546f9df6060ecc580c4dc1dccf5933d6a47c5ea5010eff77327e600288a
Security Headers
Name Value
Strict-Transport-Security max-age=31556952

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://21lessons.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.128 Safari/537.36

Response headers

x-fastly-request-id
bc6df145003e638f41318c9ef23fa18908143dc3
strict-transport-security
max-age=31556952
date
Fri, 15 Mar 2024 13:13:25 GMT
via
1.1 varnish
x-cache-hits
1
age
0
x-cache
HIT
x-proxy-cache
MISS
content-length
5242
x-served-by
cache-fra-etou8220115-FRA
last-modified
Thu, 01 Feb 2024 13:02:53 GMT
server
GitHub.com
x-github-request-id
6150:30B314:1DC9586:1E4408F:65F402EF
x-timer
S1710508405.083573,VS0,VE104
etag
"65bb967d-147a"
vary
Accept-Encoding
content-type
image/webp
access-control-allow-origin
*
cache-control
max-age=600
accept-ranges
bytes
expires
Fri, 15 Mar 2024 08:22:31 GMT
rabbit.png
21lessons.com/assets/images/ 		6 KB
6 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://21lessons.com/assets/images/rabbit.png
Requested by
Host: 21lessons.com
URL: https://21lessons.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.110.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-110-153.github.com
Software
GitHub.com /
Resource Hash
69ab0cab559370983fe90b8e96bb776bba14cd117d68089a84b2f2a96379c8c0
Security Headers
Name Value
Strict-Transport-Security max-age=31556952

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://21lessons.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.128 Safari/537.36

Response headers

x-fastly-request-id
6bf713d17454f889fc59b8df8175b12794844d90
strict-transport-security
max-age=31556952
date
Fri, 15 Mar 2024 13:13:25 GMT
via
1.1 varnish
x-cache-hits
1
age
0
x-cache
HIT
x-proxy-cache
MISS
content-length
5831
x-served-by
cache-fra-etou8220115-FRA
last-modified
Thu, 01 Feb 2024 13:02:53 GMT
server
GitHub.com
x-github-request-id
B02E:0E96:99F9DC:9CCE77:65F3F3ED
x-timer
S1710508405.083549,VS0,VE96
etag
"65bb967d-16c7"
vary
Accept-Encoding
content-type
image/png
access-control-allow-origin
*
cache-control
max-age=600
accept-ranges
bytes
x-origin-cache
HIT
expires
Fri, 15 Mar 2024 07:18:29 GMT
app.min.js
21lessons.com/assets/js/ 		119 KB
40 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://21lessons.com/assets/js/app.min.js
Requested by
Host: 21lessons.com
URL: https://21lessons.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.110.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-110-153.github.com
Software
GitHub.com /
Resource Hash
769813e91870ac47dbcc6943c5dd127167cb16aed527908cc1515655c1eef3c8
Security Headers
Name Value
Strict-Transport-Security max-age=31556952

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://21lessons.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.128 Safari/537.36

Response headers

x-fastly-request-id
a7e18cdbf7c7e4fa057ce15786744535aa0e7c26
strict-transport-security
max-age=31556952
content-encoding
gzip
via
1.1 varnish
date
Fri, 15 Mar 2024 13:13:25 GMT
age
0
x-cache
HIT
x-cache-hits
1
x-proxy-cache
MISS
content-length
40735
x-served-by
cache-fra-etou8220115-FRA
last-modified
Thu, 01 Feb 2024 13:02:54 GMT
server
GitHub.com
x-github-request-id
21C0:0DF2:BE2DD4:C1919B:65F3F3ED
x-timer
S1710508405.083554,VS0,VE92
etag
W/"65bb967e-1dc08"
vary
Accept-Encoding
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
max-age=600
accept-ranges
bytes
x-origin-cache
HIT
expires
Fri, 15 Mar 2024 07:18:29 GMT
onejs
z-na.amazon-adsystem.com/widgets/ 		0
0
mlTYdpdDwCepOR2s5kS2CwLUuEpTyoUstqEm5AMlJo4.woff2
fonts.gstatic.com/s/lora/v12/ 		15 KB
15 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://fonts.gstatic.com/s/lora/v12/mlTYdpdDwCepOR2s5kS2CwLUuEpTyoUstqEm5AMlJo4.woff2
Requested by
Host: 21lessons.com
URL: https://21lessons.com/assets/css/app.min.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:801::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
5c44be7bf1b0b598851d837b7c40b3f0675fe7ec8db084c11a9789ecab57bd30
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

Referer
https://21lessons.com/
Origin
https://21lessons.com
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.128 Safari/537.36

Response headers

date
Tue, 12 Mar 2024 13:08:11 GMT
x-content-type-options
nosniff
age
259514
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
15316
x-xss-protection
0
last-modified
Tue, 07 Nov 2017 15:25:14 GMT
server
sffe
cross-origin-opener-policy
same-origin; report-to="apps-themes"
report-to
{"group":"apps-themes","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/apps-themes"}]}
content-type
font/woff2
access-control-allow-origin
*
cache-control
public, max-age=31536000
accept-ranges
bytes
timing-allow-origin
*
expires
Wed, 12 Mar 2025 13:08:11 GMT
rAXKWvABQNHjPUk26ixVvvesZW2xOQ-xsNqO47m55DA.woff2
fonts.gstatic.com/s/lora/v12/ 		15 KB
15 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://fonts.gstatic.com/s/lora/v12/rAXKWvABQNHjPUk26ixVvvesZW2xOQ-xsNqO47m55DA.woff2
Requested by
Host: 21lessons.com
URL: https://21lessons.com/assets/css/app.min.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:801::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
3f275b5815ecd7259e3edc7f777fd0f51bd64f644ac361cc0cc74adc7f5807e1
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

Referer
https://21lessons.com/
Origin
https://21lessons.com
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.128 Safari/537.36

Response headers

date
Tue, 12 Mar 2024 10:11:51 GMT
x-content-type-options
nosniff
age
270094
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
15292
x-xss-protection
0
last-modified
Tue, 07 Nov 2017 15:24:37 GMT
server
sffe
cross-origin-opener-policy
same-origin; report-to="apps-themes"
report-to
{"group":"apps-themes","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/apps-themes"}]}
content-type
font/woff2
access-control-allow-origin
*
cache-control
public, max-age=31536000
accept-ranges
bytes
timing-allow-origin
*
expires
Wed, 12 Mar 2025 10:11:51 GMT
fa-brands-400.woff2
cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.0/webfonts/ 		75 KB
75 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.0/webfonts/fa-brands-400.woff2
Requested by
Host: cdnjs.cloudflare.com
URL: https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.0/css/all.min.css
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2606:4700::6811:180e , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
5d9190292acdd48ba0fc35080f7e7448f3cdf0d79199a4d23f0f49b5341fdf29
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/5.13.0/css/all.min.css
Origin
https://21lessons.com
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.128 Safari/537.36

Response headers

date
Fri, 15 Mar 2024 13:13:25 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
150738
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
content-length
76612
last-modified
Mon, 04 May 2020 16:10:08 GMT
server
cloudflare
cf-cdnjs-via
cfworker/kv
etag
"5eb03e60-12b44"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=FVNnZEXIH%2Fe8sm%2Bb4du2EhLABzH%2FQiA7Ej%2FMz8OSphlWhRDFZn5%2FBb55zAORH30lG7YC9gVqPsxMc8Mv6MzzYahgrh5%2BvTGRiZh%2FdeagTB9iu8zWicPlCnfIkJ9AUJf042M0YqJhGRfaTMIU%2FsV8MfwC"}],"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
864cc2bd7abe2bd2-FRA
expires
Wed, 05 Mar 2025 13:13:25 GMT

Failed requests

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

Domain
z-na.amazon-adsystem.com
URL
https://z-na.amazon-adsystem.com/widgets/onejs?MarketPlace=US&adInstanceId=24d60e4a-ce4c-42a0-9d88-40f766b2d4f4

Verdicts & Comments Add Verdict or Comment

2 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.

function| jQuery function| $

0 Cookies

1 Console Messages

Source Level URL
Text
network error URL: https://z-na.amazon-adsystem.com/widgets/onejs?MarketPlace=US&adInstanceId=24d60e4a-ce4c-42a0-9d88-40f766b2d4f4
Message:
Failed to load resource: net::ERR_NAME_NOT_RESOLVED

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=31556952