Available Reports
Last Update
April, 2024
Security Profile
- Live site
- Secure connection (HTTPS)
- Certificate valid
- No outdated techologies detected
en.duolingo.com
website information and technology stack| Web technologies detected on this domain | 31 technologies |
| Web technologies detected across all duolingo.com subdomains | 129 technologies |
| Advertisers detected on this domain | 1 technology |
| Website rank | 161,603 |
| Website Location |  United States |
| Language | English |
| Last technology update | April, 2024 |
| Dropped technologies in the last 3 months | 2 |
| Total duolingo.com subdomain count | 86 subdomains |
| Top ranking subdomain | |
| IP Address | 34.231.154.170 |
| IP Lookup | 2 websites share 34.231.154.170 IP address. |
| Autonomous System Number (ASN) | AS14618 (AMAZON-AES) |
| Total linking domains | 18 domains |
| Total linking IP | 18 IPs |
| Certificate Issuer | GoDaddy.com, Inc. |
| Certificate Expiration Date | December, 2024 (Valid ) |
| Tag Ids | GTM-TX6Z97C |
Technology Stack
List of 10 detected technologies used on the website (out of 31 total).| Technology | Technology Type | Version | First detected | |
|---|---|---|---|---|
| | Fraud Detection and Prevention | December, 2023 | ||
 Amazon ALB | Load Balancer | December, 2023 | ||
 Amazon Hosting | Web Hosting | December, 2023 | ||
 AWS | Platform as a Service | December, 2023 | ||
| | Mobile | December, 2023 | ||
 Cart Functionality | Ecommerce | December, 2023 | ||
| Description Meta | Document Standards | December, 2023 | ||
 DoubleClick Floodlight | Advertising Networks | December, 2023 | ||
 Envoy | Reverse Proxy | December, 2023 | ||
 Facebook Domain Verification | Domain Verification | December, 2023 |
Change History
List of 6 detected changes in the website technology stack within the last 3 months (out of 2 total).| Technology | Technology Type | Version | Change | Date |
|---|---|---|---|---|
 Polyfill | JavaScript Libraries | Dropped | Apr, 2024 | |
 Google AdWords Conversion | Advertiser Tracking | Dropped | Feb, 2024 |
Advertisers
List of detected advertisers used on the website.| Technology | Technology Type | Version | First detected | |
|---|---|---|---|---|
| | Ads.txt | December, 2023 |
Uncommon response headers
List of uncommon response headers that were used by the website.| Header | Value |
|---|---|
| no-retry | 1 |
| Server | duo-api |
| Surrogate-Control | no-store |
| x-duo-request-host | www.duolingo.com |
| x-envoy-upstream-service-time | 45 |
| x-runtime | 0.04220 |
| X-TID | ffff025a660b13690333 |
| x-ws | UK |