Informations Techniques
| Code de Statut HTTP | 200 |
| Version HTTP | HTTP/1.1 |
| HTTPS | ✔ Disponible |
| Adresse IP | 104.18.17.28 |
| Logiciel Serveur | cloudflare |
| CDN | Cloudflare |
| Compression | gzip |
Code de Statut HTTP 200
Version HTTP HTTP/1.1
HTTPS ✔ Disponible
Adresse IP 104.18.17.28
Logiciel Serveur cloudflare
CDN Cloudflare
Compression gzip
Performance
| Résolution DNS | 8.4 ms |
| Connexion TCP | 9.7 ms |
| Négociation TLS | 7.8 ms |
| Temps Jusqu'au Premier Octet (TTFB) | 350.1 ms |
| Téléchargement du Contenu | 1.8 ms |
| Temps de Réponse Total | 351.9 ms |
Résolution DNS 8.4 ms
Connexion TCP 9.7 ms
Négociation TLS 7.8 ms
Temps Jusqu'au Premier Octet (TTFB) 350.1 ms
Téléchargement du Contenu 1.8 ms
Temps de Réponse Total 351.9 ms
Sécurité
| HTTPS | ✔ Activé |
| HSTS | ✔ max-age=31536000; preload |
| CSP | ✔ Configuré |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Activé
HSTS ✔ max-age=31536000; preload
CSP ✔ Configuré
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
HTTP/2 ⚠ HTTP/1.1
Vérification SEO Rapide
| Titre | Free Online Courses & Online Learning | Alison |
| Meta Description | Free online courses with certificates. Join 15 million graduates and empower your career. Study, learn, certify, upskill with free online learning and training |
| Canonique | https://alison.com |
| Titre Open Graph | Free Online Courses & Online Learning | Alison |
| Description 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 |
| Image Open Graph | https://cdn01.alison-static.net/public/html/site/img/shar... |
| Twitter Card | summary |
| Titre Twitter | Free Online Courses & Online Learning | Alison |
| Description Twitter | Free online courses with certificates. Join 15 million graduates and empower your career. Study, learn, certify, upskill with free online learning and training |
| Image Twitter | https://cdn01.alison-static.net/public/html/site/img/shar... |
Titre Free Online Courses & Online Learning | Alison Meta Description Free online courses with certificates. Join 15 million graduates and empower your career. Study, learn, certify, upskill with free online learning and training Canonique https://alison.com Titre Open Graph Free Online Courses & Online Learning | Alison Description 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 Image Open Graph https://cdn01.alison-static.net/public/html/site/img/shar... Twitter Card summary Titre Twitter Free Online Courses & Online Learning | Alison Description Twitter Free online courses with certificates. Join 15 million graduates and empower your career. Study, learn, certify, upskill with free online learning and training Image Twitter https://cdn01.alison-static.net/public/html/site/img/shar... Technologies Détectées
| Technologie | Bootstrap jQuery Google Analytics Google Tag Manager Cloudflare Intercom |
Technologie Bootstrap jQuery Google Analytics Google Tag Manager Cloudflare Intercom
En-têtes HTTP
| Date
| Thu, 20 Aug 2026 07:39:14 GMT |
| Content-type
| text/html; charset=utf-8 |
| Set-cookie
| _cfuvid=cmHOqhBm58mkS6cqX3OTKWnCLlqZL.wVwhjcDu8eud8-1787211554.613316-1.0.1.1-4dtc_73jlFqYUbDgpwBM6vopiSo6tZX6Do0I1aI8PgE; HttpOnly; SameSite=None; Secure; Path=/; Domain=alison.com |
| Cf-ray
| a2dfbe385e9f3cd7-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=320,cfOrigin;dur=0 |
| Content-encoding
| gzip |
Balises Meta
| 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 | 7GHk4DYjzZUsW0Yhzj2ilrXqNLaduxXbQHawIZnc |
| Viewport | width=device-width, initial-scale=1 |
| Theme-color | #ffffff |
Date Thu, 20 Aug 2026 07:39:14 GMT
Content-type text/html; charset=utf-8
Set-cookie _cfuvid=cmHOqhBm58mkS6cqX3OTKWnCLlqZL.wVwhjcDu8eud8-1787211554.613316-1.0.1.1-4dtc_73jlFqYUbDgpwBM6vopiSo6tZX6Do0I1aI8PgE; HttpOnly; SameSite=None; Secure; Path=/; Domain=alison.com
Cf-ray a2dfbe385e9f3cd7-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=320,cfOrigin;dur=0
Content-encoding gzip
