duolingo.com

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duolingo.com is ranked #451 in the Tranco list of the world's most popular websites (list of Oct 13, 2026), up 26 places in four weeks. The domain was registered on Jan 26, 2010, 16 years, 8 months ago, through Amazon Registrar, Inc., and is paid up until Jan 26, 2027. Its homepage uses reCAPTCHA. It is served through Amazon CloudFront by Envoy.

Global rank

#451

▲ 6 this week

Domain age

16 years

since Jan 26, 2010

Technologies

detected on the homepage

SEO score

73/100

homepage checks

Popularity rank

#451 of the top 1 million sites in the Tranco research ranking, which averages several traffic and DNS sources over 30 days. Best rank in the period shown: #444.

Weekly Tranco rank (lower is more popular).

See where duolingo.com sits in the top 10,000

Domain registration

Registered: Jan 26, 2010 (16 years, 8 months ago)
Expires: Jan 26, 2027
Registrar: Amazon Registrar, Inc.
Name servers: ns-1020.awsdns-63.net, ns-1117.awsdns-11.org, ns-1904.awsdns-46.co.uk, ns-247.awsdns-30.com
DNSSEC: Not signed

From the registry's public RDAP record, checked Oct 1, 2026.

Technology stack

Security

reCAPTCHA

CDN

Amazon CloudFront

Web servers

Envoy

Detected from the homepage HTML and response headers on Oct 14, 2026. Tools loaded only after scripts run (or after consent banners) may be missing.

Homepage SEO check

Checked from the HTML our scanner received on Oct 14, 2026. Content added later by JavaScript isn't counted.

73/100

https://www.duolingo.com/

Duolingo

Duolingo is the world's most popular way to learn a language. It's 100% free, fun and science-based. Practice online on duolingo.com or on the apps!

12 passed · 8 warnings · 2 failed

Content

!Title8 characters — aim for 15–65
✓Meta description148 characters
✕H1 headingMissing in the served HTML
!SubheadingsNo H2 headings in the served HTML
iImage alt textNo images in the served HTML
✕Content lengthAbout 0 words in the served HTML

Indexing

✓IndexableNo noindex directive
✓Canonical URLhttps://www.duolingo.com/
✓robots.txtFound
✓XML sitemapFound
!Language attributeMissing
ihreflang34 language alternates
!Structured dataNo JSON-LD or microdata

Social sharing

✓Open GraphTitle, description and image set
✓Twitter / X cardsummary

Technical

✓HTTPSServed over HTTPS
✓Mobile viewportFound
✓FaviconFound
✓Character encodingutf-8

Security headers

!Strict-Transport-SecurityNot set
!Content-Security-PolicyNot set
✓Clickjacking protectionSet
!X-Content-Type-OptionsNot set
!Referrer-PolicyNot set

Server response

Final URL: https://www.duolingo.com/
HTTP status: 200
Server: duo-api
Response time: 92 ms (first byte 92 ms, from our scanner in a US data centre)
HTML size: 11 KB
Compression: gzip

Sites ranked near duolingo.com

Rank	Website	Registered	Built with
#446	vecdnlb.com	2021	—
#447	taobao.com	2003	Alibaba Cloud CDN
#448	media.net	1998	Webflow, WordPress, Cloudflare
#449	awsglobalaccelerator.com	2018	—
#450	firetvcaptiveportal.com	2020	—
#452	fandom.com	1996	Cloudflare
#453	g.page	2018	Google Analytics
#454	adobe.net	1997	—
#455	aol.com	1995	Next.js, React, Amazon CloudFront
#456	businessinsider.com	1998	Fastly, Google Tag Manager

Questions about duolingo.com

How popular is duolingo.com?

duolingo.com is #451 worldwide in the Tranco list published Oct 13, 2026.

How old is duolingo.com?

duolingo.com was registered on Jan 26, 2010, which makes the domain 16 years, 8 months old.

What is duolingo.com built with?

We detected reCAPTCHA, Amazon CloudFront and Envoy on its homepage.

Who is the registrar of duolingo.com?

Amazon Registrar, Inc., according to the registry's RDAP record.