Security Analysis Results

www.duolingo.com

Comprehensive domain security and infrastructure analysis

Live Website Preview

website screenshot of https://www.duolingo.com/

No Security Risks Detected

This domain appears to be safe and secure

100%
Score

Disclaimer: This assessment is based on automated analysis of publicly available information. Results are for informational purposes only. For critical applications, consult security professionals.

Scan Information

Last checked:July 23, 2025 08:53:34
Scan Complete

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for updated results

Page Information

Target URL
https://www.duolingo.com/
Page Title
Duolingo - The world's best way to learn a language
www.duolingo.com faviconSite Favicon
Status
Active

Host Information

Domain
www.duolingo.com
Server
duo-api
Country
United States
IP Address
3.211.55.167
ASN Information
14618
AMAZON-AES

Technologies

Google Sign-in logo
Google Sign-in
Authentication
Envoy logo
Envoy
Reverse proxies
React logo
React
JavaScript frameworks
reCAPTCHA logo
reCAPTCHA
Security
OneTrust logo
OneTrust
Cookie compliance
Google Tag Manager logo
Google Tag Manager
Tag managers

SSL Certificate

HTTPS Enabled
Secure
Certificate Issuer
49m377 Gateway Proxy BISO MITM CA
Valid From
2025-07-19 06:38:09
Valid Until
2025-08-18 06:38:39
Subject Name
www.duolingo.com

Performance Statistics

90
Total Requests
9
Domains
9
IP Addresses
1.32 MB
Transfer Size
Content Size5.35 MB

HTTP Headers

cache-control
no-store, no-cache, must-revalidate, proxy-revalidate
cf-team
28d8162e700001002ca656d400000001
content-encoding
gzip
content-type
text/html; charset=UTF-8
date
Wed, 23 Jul 2025 08:53:46 GMT
expires
0
no-retry
1
pragma
no-cache
server
duo-api
server-timing
cfReqDur;dur=2386.846
surrogate-control
no-store
x-duo-request-host
www.duolingo.com
x-envoy-upstream-service-time
72
x-frame-options
SAMEORIGIN
x-runtime
0.07031
x-tid
ffff05236880a1140bf8
x-ws
UK
17 headers detected

Technology Stack Analysis

Google Sign-in

Google Sign-in

Authentication

Google Sign-In is a secure authentication system that reduces the burden of login for users, by enabling them to sign in with their Google account.

Envoy

Envoy

Reverse proxies

Envoy is an open-source edge and service proxy, designed for cloud-native applications.

React

React

JavaScript frameworks

React is an open-source JavaScript library for building user interfaces or UI components.

reCAPTCHA

reCAPTCHA

Security

reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.

OneTrust

OneTrust

Cookie compliance

OneTrust is a cloud-based data privacy management compliance platform.

Google Tag Manager

Google Tag Manager

Tag managers

Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.

Website Cookies 10

AWSALB

www.duolingo.com

Value
QImZw+gKloFJVQiJf3Z/3s0OoOUnYeL3uQsUP128uvHx1wL3m4c2ziVJOoD69TlSOtKRbONyiiNZ4rJHnG9MArkeyK3KmrQ7ReiA4sc3TQccrfb7zveQqGrChC3f
Expires:7/30/2025

initial_referrer

.duolingo.com

Value
$direct
Expires:7/23/2026

lr

.duolingo.com

Value
Expires:7/23/2026

lu

.duolingo.com

Value
https://www.duolingo.com/
Expires:7/23/2026

wuuid

www.duolingo.com

Value
c2c942db-2155-4af3-8947-14a566c1e10e
Expires:Session

tsl

.duolingo.com

Value
1753260833663
Expires:7/23/2026

AWSALBCORS

www.duolingo.com

Secure None
Value
QImZw+gKloFJVQiJf3Z/3s0OoOUnYeL3uQsUP128uvHx1wL3m4c2ziVJOoD69TlSOtKRbONyiiNZ4rJHnG9MArkeyK3KmrQ7ReiA4sc3TQccrfb7zveQqGrChC3f
Expires:7/30/2025

lp

.duolingo.com

Value
splash
Expires:7/23/2026

lang

.duolingo.com

Value
en
Expires:7/23/2026

logged_out_uuid

.duolingo.com

Value
3f1f7ddc-6ff7-4d16-8c6f-c8a46b7b4a26
Expires:7/23/2026

External Links 20

Duolingo English Test

englishtest.duolingo.com

Analyze
Target URL
https://englishtest.duolingo.com/en

Get your class started

schools.duolingo.com

Analyze
Target URL
https://schools.duolingo.com

Get better at Math

blog.duolingo.com

Analyze
Target URL
https://blog.duolingo.com/duolingo-launches-math-app

Duolingo Handbook

duolingo.com

Analyze
Target URL
https://duolingo.com/handbook

Research

research.duolingo.com

Analyze
Target URL
https://research.duolingo.com

Careers

careers.duolingo.com

Analyze
Target URL
https://careers.duolingo.com/#careers

Brand guidelines

design.duolingo.com

Analyze
Target URL
https://design.duolingo.com

Store

store.duolingo.com

Analyze
Target URL
https://store.duolingo.com/

Press

press.duolingo.com

Analyze
Target URL
https://press.duolingo.com

Investors

investors.duolingo.com

Analyze
Target URL
https://investors.duolingo.com

Schools FAQs

duolingoschools.zendesk.com

Analyze
Target URL
https://duolingoschools.zendesk.com/hc/en-us

Duolingo English Test FAQs

englishtest.duolingo.com

Analyze
Target URL
https://englishtest.duolingo.com/faq

Status

status.duolingo.com

Analyze
Target URL
https://status.duolingo.com/

Podcast

podcast.duolingo.com

Analyze
Target URL
https://podcast.duolingo.com

Duolingo Max

blog.duolingo.com

Analyze
Target URL
https://blog.duolingo.com/duolingo-max/

Blog

blog.duolingo.com

Analyze
Target URL
https://blog.duolingo.com

Instagram

www.instagram.com

Analyze
Target URL
https://www.instagram.com/duolingo

TikTok

www.tiktok.com

Analyze
Target URL
https://www.tiktok.com/@duolingo

Twitter

twitter.com

Analyze
Target URL
https://twitter.com/duolingo

YouTube

www.youtube.com

Analyze
Target URL
https://www.youtube.com/user/duolingo

Requested Domains 9

accounts.google.com

Unknown Type
No category information available

cdn.cookielaw.org

Unknown Type
No category information available

d35aaqx5ub95lt.cloudfront.net

Unknown Type
No category information available

excess.duolingo.com

Unknown Type
No category information available

www.duolingo.com

Subdomain
Categories
EducationEducationTranslatorTechnology

www.googletagmanager.com

Unknown Type
No category information available

www.gstatic.com

Unknown Type
No category information available

www.recaptcha.net

Unknown Type
No category information available

zombie.duolingo.com

Unknown Type
No category information available
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