Información Técnica
| Código de estado HTTP | 200 |
| Versión HTTP | HTTP/1.1 |
| HTTPS | ✔ Disponible |
| Dirección IP | 44.218.123.247 |
| Software del servidor | duo-api |
| CDN | CDN (Miss from cloudfront) |
| Compresión | gzip |
|
ℹ 🔵 Falta HSTS | No se ha configurado HTTP Strict Transport Security. Recomendado para sitios HTTPS. |
|
ℹ 🔵 Falta Content Security Policy | No se ha configurado CSP. Ayuda a prevenir ataques XSS e inyección de contenido. |
Código de estado HTTP 200
Versión HTTP HTTP/1.1
HTTPS ✔ Disponible
Dirección IP 44.218.123.247
Software del servidor duo-api
CDN CDN (Miss from cloudfront)
Compresión gzip
ℹ 🔵 Falta HSTS No se ha configurado HTTP Strict Transport Security. Recomendado para sitios HTTPS.
ℹ 🔵 Falta Content Security Policy No se ha configurado CSP. Ayuda a prevenir ataques XSS e inyección de contenido.
Cadena de Redirecciones
| # | URL | Código de estado HTTP | Estado |
| 1 | https://support.duolingo.com:443 | 301 | HTTP/2 301 |
| 2 | https://www.duolingo.com/help | 200 | HTTP/2 200 |
#1 URL https://support.duolingo.com:443
Código de estado HTTP 301
Estado HTTP/2 301
#2 URL https://www.duolingo.com/help
Código de estado HTTP 200
Estado HTTP/2 200
Rendimiento
| Resolución DNS | 1.7 ms |
| Conexión TCP | 2.6 ms |
| Negociación TLS | 3.6 ms |
| Tiempo hasta el primer byte (TTFB) | 268.7 ms |
| Descarga de contenido | 0.1 ms |
| Tiempo total de respuesta | 268.8 ms |
Resolución DNS 1.7 ms
Conexión TCP 2.6 ms
Negociación TLS 3.6 ms
Tiempo hasta el primer byte (TTFB) 268.7 ms
Descarga de contenido 0.1 ms
Tiempo total de respuesta 268.8 ms
Seguridad
| HTTPS | ✔ Activado |
| HSTS | ✘ No configurado |
| CSP | ⚠ No configurado |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ⚠ No configurado |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Activado
HSTS ✘ No configurado
CSP ⚠ No configurado
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ⚠ No configurado
HTTP/2 ⚠ HTTP/1.1
Comprobación SEO
Tecnologías Detectadas
| Tecnología | Google Tag Manager |
Tecnología Google Tag Manager
Cabeceras HTTP
| Content-type
| text/html; charset=UTF-8 |
| Date
| Fri, 24 Jul 2026 20:44:34 GMT |
| X-envoy-upstream-service-time
| 8 |
| X-duo-request-host
| www.duolingo.com |
| Set-cookie
| wuuid=03c6cb9a-51d6-4530-8bbd-e82a3914c9e1 |
| Server
| duo-api |
| No-retry
| 1 |
| Cache-control
| no-store, no-cache, must-revalidate, proxy-revalidate |
| Expires
| 0 |
| Pragma
| no-cache |
| Surrogate-control
| no-store |
| X-frame-options
| SAMEORIGIN |
| X-tid
| fffff16c6a63ad642d6e |
| X-ws
| UK |
| X-runtime
| 0.00608 |
| Content-encoding
| gzip |
| X-cache
| Miss from cloudfront |
| Via
| 1.1 e83a5bd987930b8174cef95bb293f2c2.cloudfront.net (CloudFront) |
| X-amz-cf-pop
| CDG54-P1 |
| X-amz-cf-id
| 60p0zyX9saB1K4gr4NwkE5mWy1c8luR36a2ckCADA2U37GooRb4q2Q== |
Meta Tags
| Viewport | width=device-width,initial-scale=1,user-scalable=no |
| Robots | NOODP |
| Refresh | 0; url=/nojs/splash |
| Apple-mobile-web-app-capable | yes |
| Apple-mobile-web-app-status-bar-style | black |
| Apple-mobile-web-app-title | Duolingo |
| Google | notranslate |
| Mobile-web-app-capable | yes |
| Apple-itunes-app | app-id=570060128 |
| Facebook-domain-verification | mwudgypvvgl4fekxjk5rpk3eqg7ykt |
| Fb:app_id | 234536436609303 |
| Keywords | learn, spanish, german, french, portuguese, italian, english, free, lessons, course, language, study, flashcards |
| Description | Duolingo is the world |
Content-type text/html; charset=UTF-8
Date Fri, 24 Jul 2026 20:44:34 GMT
X-envoy-upstream-service-time 8
X-duo-request-host www.duolingo.com
Set-cookie wuuid=03c6cb9a-51d6-4530-8bbd-e82a3914c9e1
Server duo-api
No-retry 1
Cache-control no-store, no-cache, must-revalidate, proxy-revalidate
Expires 0
Pragma no-cache
Surrogate-control no-store
X-frame-options SAMEORIGIN
X-tid fffff16c6a63ad642d6e
X-ws UK
X-runtime 0.00608
Content-encoding gzip
X-cache Miss from cloudfront
Via 1.1 e83a5bd987930b8174cef95bb293f2c2.cloudfront.net (CloudFront)
X-amz-cf-pop CDG54-P1
X-amz-cf-id 60p0zyX9saB1K4gr4NwkE5mWy1c8luR36a2ckCADA2U37GooRb4q2Q==
