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el.quizlet.com Open in urlscan Pro
104.16.133.27  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://el.quizlet.com/
Effective URL: https://el.quizlet.com/
Submission: On September 13 via api from GB — Scanned from GB
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 4 IPs in 1 countries across 2 domains to perform 7 HTTP transactions. The main IP is 104.16.133.27, located in and belongs to CLOUDFLARENET, US. The main domain is el.quizlet.com. The Cisco Umbrella rank of the primary domain is 30145.
TLS certificate: Issued by WE1 on August 12th 2024. Valid for: 3 months.
This is the only time el.quizlet.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
3 104.16.133.27 13335 (CLOUDFLAR...)
1 104.18.94.41 13335 (CLOUDFLAR...)
1 104.18.95.41 13335 (CLOUDFLAR...)
7 4
Apex Domain
Subdomains		 Transfer
3 quizlet.com
el.quizlet.com — Cisco Umbrella Rank: 30145
188 KB
2 cloudflare.com
challenges.cloudflare.com — Cisco Umbrella Rank: 3877
16 KB
7 2
Domain Requested by
3 el.quizlet.com el.quizlet.com
2 challenges.cloudflare.com el.quizlet.com
challenges.cloudflare.com
7 2

This site contains no links.

Subject Issuer Validity Valid
quizlet.com
WE1		 2024-08-12 -
2024-11-10		 3 months crt.sh
challenges.cloudflare.com
WE1		 2024-09-05 -
2024-12-04		 3 months crt.sh

This page contains 2 frames:

Primary Page: https://el.quizlet.com/
Frame ID: 538035D90AC9A49A9AF8429B7658C48C
Requests: 5 HTTP requests in this frame

Frame: https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/turnstile/if/ov2/av0/rcv0/0/b78z3/0x4AAAAAAADnPIDROrmt1Wwj/light/fbE/normal/auto/
Frame ID: 369960293D3081CAF31C85C70391111C
Requests: 1 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Captcha Challenge…

Page URL History Show full URLs

  1. http://el.quizlet.com/ HTTP 307
    https://el.quizlet.com/ Page URL

Page Statistics

7
Requests

71 %
HTTPS

0 %
IPv6

2
Domains

2
Subdomains

4
IPs

1
Countries

219 kB
Transfer

393 kB
Size

1
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://el.quizlet.com/ HTTP 307
    https://el.quizlet.com/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

7 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
el.quizlet.com/
Redirect Chain
  • http://el.quizlet.com/
  • https://el.quizlet.com/
163 KB
120 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://el.quizlet.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
104.16.133.27 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
345230a49c9a25eaddb1233672f4cf7868f3dda1ea8ef102cecf54e440fee426
Security Headers
Name Value
X-Frame-Options SAMEORIGIN

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Response headers

accept-ch
Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
cache-control
private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
cf-chl-out
jG8uIFYlKrb/dG/wqD7ruFreSdS7xbNRNuN3xAv4Fn3mqr9n8xJkfAE9LjqP2BnpuhpNFMhXdmscpXCarAzhfBat1DgbSZbmFhU7Wq3NtdZ7Rs0YPGZuCYBBCSRATSzzCQ0H8Apt8jR+JyDbMTE3zg==$uh+GQMhhb48wwD0gRtNzrA==
cf-mitigated
challenge
cf-ray
8c270f421dcd71ed-LHR
content-encoding
br
content-type
text/html; charset=UTF-8
critical-ch
Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
cross-origin-embedder-policy
require-corp
cross-origin-opener-policy
same-origin
cross-origin-resource-policy
same-origin
date
Fri, 13 Sep 2024 09:20:08 GMT
expires
Thu, 01 Jan 1970 00:00:01 GMT
origin-agent-cluster
?1
permissions-policy
accelerometer=(),autoplay=(),browsing-topics=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),interest-cohort=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=()
referrer-policy
same-origin
server
cloudflare
vary
Accept-Encoding
x-content-options
nosniff
x-frame-options
SAMEORIGIN

Redirect headers

Location
https://el.quizlet.com/
Non-Authoritative-Reason
HttpsUpgrades
v1
el.quizlet.com/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/ 		151 KB
55 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://el.quizlet.com/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=8c270f421dcd71ed
Requested by
Host: el.quizlet.com
URL: https://el.quizlet.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
104.16.133.27 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
9a052a033cc4254ae4cea23bb69a2ce77c82d5b5d8923a2ec40f72cff53f2dee

Request headers

Referer
https://el.quizlet.com/?__cf_chl_rt_tk=Hwzx.7NOLPFiEOduFJZxUuvxskml2tQe3hstV7sSC5k-1726219208-0.0.1.1-7039
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Response headers

date
Fri, 13 Sep 2024 09:20:08 GMT
cache-control
private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
content-encoding
br
server
cloudflare
cf-ray
8c270f432f1771ed-LHR
content-type
application/javascript; charset=UTF-8
truncated
/ 		15 KB
15 KB 		Font
General
Check archive.org
Download Go to
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
5db26503a3336280116147a376dd473723d641bfbc4296df1dea107765509e50

Request headers

Referer
Origin
https://el.quizlet.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Response headers

Content-Type
application/font-woff2;charset=utf-8
0dab1525-093e-4ad5-9101-4232100aace7
https://el.quizlet.com/ Frame 		0
0
api.js
challenges.cloudflare.com/turnstile/v0/b/388c99dd0998/ 		46 KB
16 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://challenges.cloudflare.com/turnstile/v0/b/388c99dd0998/api.js?onload=tmrM1&render=explicit
Requested by
Host: el.quizlet.com
URL: https://el.quizlet.com/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=8c270f421dcd71ed
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.94.41 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
8eae5159c56bf66c17e0cb002b25fc2e343f3e009dc2a39a7e230f08b7b8c672

Request headers

Referer
Origin
https://el.quizlet.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Response headers

date
Fri, 13 Sep 2024 09:20:08 GMT
content-encoding
br
last-modified
Wed, 11 Sep 2024 15:58:53 GMT
server
cloudflare
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
max-age=31536000, stale-if-error=10800, stale-while-revalidate=31536000, public
cross-origin-resource-policy
cross-origin
cf-ray
8c270f43da4e6549-LHR
alt-svc
h3=":443"; ma=86400
eccf03a5b0f394d
el.quizlet.com/cdn-cgi/challenge-platform/h/b/flow/ov1/691690744:1726215203:Ki-_yM3-9bNY2TWwDqIHjfN3vE-iyP7t6rwuN1opN0E/8c270f421dcd71ed/ 		17 KB
13 KB 		XHR
General
Check archive.org
Download Go to
Full URL
https://el.quizlet.com/cdn-cgi/challenge-platform/h/b/flow/ov1/691690744:1726215203:Ki-_yM3-9bNY2TWwDqIHjfN3vE-iyP7t6rwuN1opN0E/8c270f421dcd71ed/eccf03a5b0f394d
Requested by
Host: el.quizlet.com
URL: https://el.quizlet.com/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=8c270f421dcd71ed
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
104.16.133.27 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
93f9d2fb622e8354e87303df691afc9ee78a62dc6e2a67c1ce646c1f06736738

Request headers

Referer
https://el.quizlet.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36
CF-Challenge
eccf03a5b0f394d
Content-type
application/x-www-form-urlencoded

Response headers

content-type
text/plain; charset=UTF-8
date
Fri, 13 Sep 2024 09:20:08 GMT
content-encoding
br
server
cloudflare
cf-ray
8c270f44583271ed-LHR
cf-chl-gen
bda8G7KFKNuD7JsuhA9WV0OWvsvanCJOtIts/zMvQurFHo3yWjiURVkr3OHH7rq3/214lhq42w==$tdq/WdaSBnYk/8Px
0afcbe97-29bb-4d4c-ae8f-b84c7fcdb1d8
https://el.quizlet.com/ Frame 		0
0
/
challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/turnstile/if/ov2/av0/rcv0/0/b78z3/0x4AAAAAAADnPIDROrmt1Wwj/light/fbE/normal/auto/ Frame 3699 		0
0 		Document
General
Check archive.org
Download Go to
Full URL
https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/b/turnstile/if/ov2/av0/rcv0/0/b78z3/0x4AAAAAAADnPIDROrmt1Wwj/light/fbE/normal/auto/
Requested by
Host: challenges.cloudflare.com
URL: https://challenges.cloudflare.com/turnstile/v0/b/388c99dd0998/api.js?onload=tmrM1&render=explicit
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.95.41 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
Security Headers
Name Value
Content-Security-Policy frame-src https://challenges.cloudflare.com/ blob:; base-uri 'self'

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Response headers

accept-ch
Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
alt-svc
h3=":443"; ma=86400
cache-control
private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
cf-ray
8c270f456b308879-LHR
content-encoding
br
content-security-policy
frame-src https://challenges.cloudflare.com/ blob:; base-uri 'self'
content-type
text/html; charset=UTF-8
critical-ch
Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
cross-origin-embedder-policy
require-corp
cross-origin-opener-policy
same-origin
cross-origin-resource-policy
cross-origin
date
Fri, 13 Sep 2024 09:20:08 GMT
document-policy
js-profiling
origin-agent-cluster
?1
permissions-policy
accelerometer=(),autoplay=(),browsing-topics=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),interest-cohort=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=()
referrer-policy
same-origin
server
cloudflare

Failed requests

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

Domain
el.quizlet.com
URL
blob:https://el.quizlet.com/0dab1525-093e-4ad5-9101-4232100aace7
Domain
el.quizlet.com
URL
blob:https://el.quizlet.com/0afcbe97-29bb-4d4c-ae8f-b84c7fcdb1d8

Verdicts & Comments Add Verdict or Comment

18 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.

object| _cf_chl_opt function| tmrM1 boolean| NfjDe3 function| WEkH5 function| aFPe5 function| fVlBp1 function| JJRHZ6 function| ciUn6 object| twswo3 object| DaPX4 function| WgoI3 object| dNWjt8 number| XVGd6 object| angular object| turnstile boolean| yTUQp3 string| UOFVA0 boolean| XMQxS5

1 Cookies

Domain/Path Name / Value
.quizlet.com/ Name: __cf_bm
Value: uorlgIUH89EUo1l2JMIxU13VKXKNFzNg6094I2pkPTg-1726219208-1.0.1.1-nGlTmqF0KstAb39f2zxTdg6E_jLwu5NKO1JfF_IzopOGb2TeEu2uuWN3KotZ54EBwUomxr.YQEhrqH8XyA92Qw

1 Console Messages

Source Level URL
Text
network error URL: https://el.quizlet.com/
Message:
Failed to load resource: the server responded with a status of 403 ()

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
X-Frame-Options SAMEORIGIN