Información Técnica
| Código de estado HTTP | 200 |
| Versión HTTP | HTTP/1.1 |
| HTTPS | ✔ Disponible |
| Dirección IP | 104.18.16.28 |
| Software del servidor | cloudflare |
| CDN | Cloudflare |
| Compresión | gzip |
Código de estado HTTP 200
Versión HTTP HTTP/1.1
HTTPS ✔ Disponible
Dirección IP 104.18.16.28
Software del servidor cloudflare
CDN Cloudflare
Compresión gzip
Rendimiento
| Resolución DNS | 4.1 ms |
| Conexión TCP | 6.2 ms |
| Negociación TLS | 6.3 ms |
| Tiempo hasta el primer byte (TTFB) | 316.2 ms |
| Descarga de contenido | 2.4 ms |
| Tiempo total de respuesta | 318.6 ms |
Resolución DNS 4.1 ms
Conexión TCP 6.2 ms
Negociación TLS 6.3 ms
Tiempo hasta el primer byte (TTFB) 316.2 ms
Descarga de contenido 2.4 ms
Tiempo total de respuesta 318.6 ms
Seguridad
| HTTPS | ✔ Activado |
| HSTS | ✔ max-age=31536000; preload |
| CSP | ✔ Configurado |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Activado
HSTS ✔ max-age=31536000; preload
CSP ✔ Configurado
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
HTTP/2 ⚠ HTTP/1.1
Comprobación SEO
| Título | Free Online Courses & Online Learning | Alison |
| Meta descripción | Free online courses with certificates. Join 15 million graduates and empower your career. Study, learn, certify, upskill with free online learning and training |
| Canonical | https://alison.com |
| Título Open Graph | Free Online Courses & Online Learning | Alison |
| Descripción Open Graph | Free online courses with certificates. Join 15 million graduates and empower your career. Study, learn, certify, upskill with free online learning and training |
| Imagen Open Graph | https://cdn01.alison-static.net/public/html/site/img/shar... |
| Twitter Card | summary |
| Título Twitter | Free Online Courses & Online Learning | Alison |
| Descripción Twitter | Free online courses with certificates. Join 15 million graduates and empower your career. Study, learn, certify, upskill with free online learning and training |
| Imagen Twitter | https://cdn01.alison-static.net/public/html/site/img/shar... |
Título Free Online Courses & Online Learning | Alison Meta descripción Free online courses with certificates. Join 15 million graduates and empower your career. Study, learn, certify, upskill with free online learning and training Canonical https://alison.com Título Open Graph Free Online Courses & Online Learning | Alison Descripción Open Graph Free online courses with certificates. Join 15 million graduates and empower your career. Study, learn, certify, upskill with free online learning and training Imagen Open Graph https://cdn01.alison-static.net/public/html/site/img/shar... Twitter Card summary Título Twitter Free Online Courses & Online Learning | Alison Descripción Twitter Free online courses with certificates. Join 15 million graduates and empower your career. Study, learn, certify, upskill with free online learning and training Imagen Twitter https://cdn01.alison-static.net/public/html/site/img/shar... Tecnologías Detectadas
| Tecnología | Bootstrap jQuery Google Analytics Google Tag Manager Cloudflare Intercom |
Tecnología Bootstrap jQuery Google Analytics Google Tag Manager Cloudflare Intercom
Cabeceras HTTP
| Date
| Thu, 20 Aug 2026 05:52:13 GMT |
| Content-type
| text/html; charset=utf-8 |
| Set-cookie
| _cfuvid=NoMnkodxGuszGKiuiZgMdtJrVigVE7FHK9PuM48rCqE-1787205133.430295-1.0.1.1-lROAet5209x2folo7joauHqguw.jj.WexsS0RggZCnY; HttpOnly; SameSite=None; Secure; Path=/; Domain=alison.com |
| Cf-ray
| a2df2173eee2f590-CDG |
| Cf-cache-status
| DYNAMIC |
| Access-control-allow-origin
| * |
| Cache-control
| no-cache, private |
| Server
| cloudflare |
| X-xss-protection
| 1; mode=block |
| Strict-transport-security
| max-age=31536000; preload |
| Vary
| Accept-Encoding |
| Access-control-allow-headers
| x-requested-with, Content-Type, origin, authorization, accept, client-security-token |
| Access-control-allow-methods
| PUT, GET, POST, DELETE, OPTIONS, PATCH |
| Access-control-max-age
| 1000 |
| Content-security-policy
| frame-ancestors 'self'; |
| Cross-origin-opener-policy
| same-origin-allow-popups |
| X-content-type-options
| nosniff |
| X-frame-options
| SAMEORIGIN |
| Server-timing
| cfEdge;dur=294,cfOrigin;dur=0 |
| Content-encoding
| gzip |
Meta Tags
| Keywords | alison courses |
| Description | Free online courses with certificates. Join 15 million graduates and empower your career. Study, learn, certify, upskill with free online learning and training |
| Csrf-token | g5L0Yk5mo5ofTDorIj0kbBCJxzgZ26ydjNHscPdg |
| Viewport | width=device-width, initial-scale=1 |
| Theme-color | #ffffff |
Date Thu, 20 Aug 2026 05:52:13 GMT
Content-type text/html; charset=utf-8
Set-cookie _cfuvid=NoMnkodxGuszGKiuiZgMdtJrVigVE7FHK9PuM48rCqE-1787205133.430295-1.0.1.1-lROAet5209x2folo7joauHqguw.jj.WexsS0RggZCnY; HttpOnly; SameSite=None; Secure; Path=/; Domain=alison.com
Cf-ray a2df2173eee2f590-CDG
Cf-cache-status DYNAMIC
Access-control-allow-origin *
Cache-control no-cache, private
Server cloudflare
X-xss-protection 1; mode=block
Strict-transport-security max-age=31536000; preload
Vary Accept-Encoding
Access-control-allow-headers x-requested-with, Content-Type, origin, authorization, accept, client-security-token
Access-control-allow-methods PUT, GET, POST, DELETE, OPTIONS, PATCH
Access-control-max-age 1000
Content-security-policy frame-ancestors 'self';
Cross-origin-opener-policy same-origin-allow-popups
X-content-type-options nosniff
X-frame-options SAMEORIGIN
Server-timing cfEdge;dur=294,cfOrigin;dur=0
Content-encoding gzip
