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Domain Due Diligence
Report for Duolingo.com

Report Date January 3, 2026
Recommendation
Proceed
Overall Summary
Safe
Why we think so

Duolingo.com is a well-established language-learning platform with about 54 million monthly visits and a strong global ranking (#599). The site uses trusted infrastructure such as Amazon Web Services and employs recognized marketing and analytics tools. Trademark filings confirm ownership by Duolingo, Inc., based in Pittsburgh, USA. While the domain is clean from blacklists and Google Safe Browsing finds no threats, user reviews reveal complaints mainly about customer service, billing issues, and app glitches. Reports mention external scams exploiting the Duolingo brand, but no evidence shows the company itself engaging in fraudulent activities. Recent news highlights Duolingo's continued growth, product updates, and some public criticism related to its shift to AI-first operations. Overall, duolingo.com presents low technical and business risk but moderate reputation concerns due to external scam attempts and customer service reports.

Confidence Score
88%

Risk Insights

✅

Strong Brand and Ownership

Duolingo, Inc. owns trademarks registered from 2014 onward.
Legal filings show consistent corporate addresses in Pittsburgh, PA.
Registered trademarks cover language software and apparel.
🌐

High Web Traffic and User Base

About 54 million monthly visits with top users in the US and Brazil.
Site ranks #599 globally and #25 in education category.
Direct and search traffic make up 98% of visits.
⚠️

User Complaints and Scam Risks

Common complaints focus on billing issues and poor support.
Phishing scams exploit leaked user emails from 2023 breach.
Company not responsible, but users should remain cautious.

Contradictory Signals

Technical authenticity contrasts with reputation challenges caused by customer service and phishing scams.

Signal A: Safe technical and legal indicators

Signal B: Moderate user complaints and external scam exploitation

Category Scores

Identity 90/100
Reputation 60/100
Technical 90/100
Content 85/100
Legal 80/100
Business Validity 90/100

Red Flags & Warnings

  • Frequent customer complaints about poor support and billing issues indicate reputation risks.
  • External scams exploiting the Duolingo brand create potential user risk despite the domain's safety.

🔎 Detailed Checks & Analysis

Domain and Traffic Analysis

Score: 90/100
Passed

"Uses verified traffic sources and ranking data from SimilarTech and SimilarWeb."

Reason: High monthly traffic and strong domain ranking indicate a legitimate and popular site.

Ownership and Trademark Verification

Score: 85/100
Passed

"Includes clear registrant info and active trademark statuses."

Reason: USPTO trademark records confirm ownership by Duolingo, Inc., establishing authentic branding.

Technical Security Review

Score: 90/100
Passed

"DNS records and security measures conform to standards."

Reason: SSL certificates are valid and infrastructure is hosted by reputable providers like Amazon AWS.

Blacklist and Phishing Status

Score: 100/100
Passed

"Indicates no detected large-scale abuse or phishing activity using domain itself."

Reason: No listings on crypto scam blacklists or Google Safe Browsing warnings.

Reputation and User Feedback

Score: 60/100
Failed

"External actors misuse brand in phishing scams, diluting reputation."

Reason: User reports point to issues with customer support, billing disputes, and app functionality problems.

Legal and Dispute Review

Score: 80/100
Passed

"Active trademark protection and no fraudulent claims against the domain found."

Reason: No direct lawsuits or legal disputes target duolingo.com, but some industry-related challenges are noted.

Your Next Steps

  • 1
    Use duolingo.com as a legitimate source for language learning, but stay cautious of phishing attempts via email or social media impersonations.
  • 2
    Verify all communications come from official duolingo.com domains especially before sharing personal or payment information.
  • 3
    Monitor for updates on user support improvements and keep an eye on possible billing issues if subscribing.
  • 4
    Avoid third-party crypto offerings or promotions claiming association with Duolingo without clear verification.

Evidence & Citations

🕵🏻 Keep investigating

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