duolingo.com 200
🔒 SSL Valid
HTTP Status A three-digit code showing if the site loaded successfully (200), redirects (301/302), or has errors (4xx/5xx).Read more →
200
SSL Expires When the SSL certificate expires. An expired certificate causes browser security warnings.Read more →
in 126d
Domain Expires When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
N/A
Hosting The company and location where this website's server is physically located.Read more →
AWS
Security Score based on key HTTP security headers: HSTS, Content-Security-Policy, and X-Frame-Options.Read more →
1/3
IP Address The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
34.226.93.231
Tech Stack Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 3
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📊 Analytics
Google Tag Manager
☁️ Hosting
AWS
⚡ JS Framework
React
Screenshot 2026-08-20
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Captured: 2026-08-20 03:09:21 · 7.1 KB
DNS Records DNS translates domain names to IP addresses. Records control where the site, email, and services are directed.Read more →
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| A (IPv4) | 34.226.93.231107.23.49.463.88.96.65 |
| NS | ns-1904.awsdns-46.co.ukns-247.awsdns-30.comns-1020.awsdns-63.netns-1117.awsdns-11.org |
| MX | 20 alt2.aspmx.l.google.com30 aspmx2.googlemail.com30 aspmx3.googlemail.com30 aspmx4.googlemail.com30 aspmx5.googlemail.com10 aspmx.l.google.com20 alt1.aspmx.l.google.com |
| TXT | pardot_208162_*=c15d5cb1b9f31e26058e1f30bda9e5d65c57cfeea37b34af8e1dd88474460e90 MS=ms66530579 anthropic-domain-verification-z4335b=YssTBALPY7K784Sri4FjVHjd3 stripe-verification=c8d270a115adc8c5a0a84fb24e17b7d05f66aad648d01e86f15548c6d0254ff5 aliyun-site-verification=1acfc148-50be-45c8-a021-3c933fc8eff9 google-site-verification=975UaH3lkKONB88HjWDDg34p8cdCqyTVSq_KGBAXrmU openai-domain-verification=dv-ieCpefZUqvVQwb8f7o4SlFye e622flctk14s3cs3ccdauh8uth h1-domain-verification=sjPBeaGqQwEe8YhJ3W8JVNJa7WDQFAzc6AHkURoErkh324Yy rippling-domain-verification=9692f0635321f04d openai-domain-verification=dv-A4cFxdrYIEodfG6UiQU0qxnT klaviyo-site-verification=TGmZS7 slack-domain-verification=iuNWYimCCkEpnistAJvWc4YOZF8izoZ23TCDek0I pardot_208162_*=610bfb45f202232a79db94c298b30d14332a62a6894e695b025fa7949d7b03fa spacelift-domain-verification=519xtPXm klaviyo-site-verification=RKdcF3 apple-domain-verification=bMPI889zOgALUenN amazonses:+SIz2NZPqYri3C+PSIyKShZIbuI4rNpbLlES7lmvpu4= atlassian-sending-domain-verification=423a5faf-1cfa-4704-a38a-f7adae302dd6 _vg2bua41v8x489g1y55hg3hr4h3qmj0 v=spf1 ip4:100.25.59.11 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 ip4:52.73.203.75 ip4:52.70.130.33 include:amazonses.com include:_spf.google.com include:_spf.salesforce.com include:mail.zendesk.com include:aspmx.pardot.com ~all docker-verification=b4ead4c5-fd66-42a5-a684-8f2e7f4c1417 jetbrains-domain-verification=bt8q7duih10l9pmf5fo5yy8wf |
WHOIS / RDAP Public registration data: who registered the domain, when, and when it expires.Read more →
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| Registrar | N/A |
| Registered | N/A |
| Expires | N/A |
| Last Updated | N/A |
SSL Certificate Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Valid
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| Subject (CN) | duolingo.com |
| Issuer | Amazon |
| Valid From | 2025-11-25 |
| Valid Until | 2026-12-24 (126 days left) |
| SANs (1) | duolingo.com |
HTTP Headers Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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| Status | 200 |
| Server | duo-api |
| Content-Type | text/html; charset=UTF-8 |
| Final URL | https://www.duolingo.com/ |
| x-frame-options | SAMEORIGIN |
| cache-control | no-store, no-cache, must-revalidate, proxy-revalidate |
| x-cache | Miss from cloudfront |
| via | 1.1 295b916a9e7205a7661c81a0c48d031c.cloudfront.net (CloudFront) |
Security headers HTTP headers that protect visitors from attacks. HSTS forces HTTPS, CSP controls resource loading, X-Frame-Options prevents clickjacking.Read more →
Hosting Physical infrastructure: where the server is, who operates it, and what network it belongs to.Read more →
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| IP Address | 34.226.93.231 |
| Provider | AWS |
| Organization | Amazon.com, Inc. |
| ASN | AS14618 |
| Country | US |
| City | Ashburn |
Security Score
F (2/7)
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Sitemap & Robots
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| robots.txt | Found Restricted |
| Sitemap | Found 5 sitemaps (index) pages |
| Disallowed paths |
/sessions/
/extend_session/
/session_element_solutions/
/friendships/
/vocabularies/
/diagnostics/
/skills/
/translations/
/translation/
/contribute/
... +12 more |
Social & Meta Tags
Complete
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| Title | Duolingo |
| Description | Duolingo is the world |
| OG Title | Learn a language for free |
| OG Description | Learn languages by playing a game. It |
| OG Image | https://www.duolingo.com/images/facebook/duo-08523a2.jpg |
| OG Type | website |
| OG Site Name | Duolingo |
| Twitter Card | summary |
| Twitter Image | https://www.duolingo.com/images/facebook/duo200.png |
| Canonical URL | https://www.duolingo.com/ |
Mail Security Email authentication records (SPF & DMARC) that prevent spoofing and phishing from this domain.Read more →
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| SPF | ✓ Present v=spf1 ip4:100.25.59.11 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 ip4:52.73.203.75 ip4:52.70.130.33 include:amazonses.com include:_spf.google.com include:_spf.salesforce.com include:mail.zendesk.com include:aspmx.pardot.com ~all |
| DMARC | ✓ Present v=DMARC1; p=reject; sp=reject; fo=1; rua=mailto:[email protected],mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; adkim=r; aspf=r |
| MX Records | 20 → alt2.aspmx.l.google.com 30 → aspmx2.googlemail.com 30 → aspmx3.googlemail.com 30 → aspmx4.googlemail.com 30 → aspmx5.googlemail.com 10 → aspmx.l.google.com 20 → alt1.aspmx.l.google.com |