Información Técnica
| Código de estado HTTP | 200 |
| Versión HTTP | HTTP/1.1 |
| HTTPS | ✔ Disponible |
| Dirección IP | 75.2.60.5 |
| Software del servidor | Netlify |
| Compresión | gzip |
|
🔒 🟡 Mixed Content (2 recursos HTTP) | La página se sirve por HTTPS pero carga 2 recurso(s) por HTTP. Esto puede bloquearse en navegadores modernos. |
|
ℹ 🔵 Falta Content Security Policy | No se ha configurado CSP. Ayuda a prevenir ataques XSS e inyección de contenido. |
|
ℹ 🔵 Falta X-Frame-Options | El sitio puede ser incrustado en iframes por terceros (riesgo de clickjacking). |
Código de estado HTTP 200
Versión HTTP HTTP/1.1
HTTPS ✔ Disponible
Dirección IP 75.2.60.5
Software del servidor Netlify
Compresión gzip
🔒 🟡 Mixed Content (2 recursos HTTP) La página se sirve por HTTPS pero carga 2 recurso(s) por HTTP. Esto puede bloquearse en navegadores modernos.
ℹ 🔵 Falta Content Security Policy No se ha configurado CSP. Ayuda a prevenir ataques XSS e inyección de contenido.
ℹ 🔵 Falta X-Frame-Options El sitio puede ser incrustado en iframes por terceros (riesgo de clickjacking).
Cadena de Redirecciones
| # | URL | Código de estado HTTP | Estado |
| 1 | https://tefl.org:443 | 301 | HTTP/2 301 |
| 2 | https://www.tefl.org/ | 200 | HTTP/2 200 |
#1 URL https://tefl.org:443
Código de estado HTTP 301
Estado HTTP/2 301
#2 URL https://www.tefl.org/
Código de estado HTTP 200
Estado HTTP/2 200
Rendimiento
| Resolución DNS | 22.8 ms |
| Conexión TCP | 23.5 ms |
| Negociación TLS | 24.6 ms |
| Tiempo hasta el primer byte (TTFB) | 67.4 ms |
| Descarga de contenido | 34.7 ms |
| Tiempo total de respuesta | 102 ms |
Resolución DNS 22.8 ms
Conexión TCP 23.5 ms
Negociación TLS 24.6 ms
Tiempo hasta el primer byte (TTFB) 67.4 ms
Descarga de contenido 34.7 ms
Tiempo total de respuesta 102 ms
Seguridad
| HTTPS | ✔ Activado |
| HSTS | ✔ max-age=31536000 |
| CSP | ⚠ No configurado |
| X-Frame-Options | ⚠ No configurado |
| X-Content-Type-Options | ⚠ No configurado |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Activado
HSTS ✔ max-age=31536000
CSP ⚠ No configurado
X-Frame-Options ⚠ No configurado
X-Content-Type-Options ⚠ No configurado
HTTP/2 ⚠ HTTP/1.1
Comprobación SEO
| Título | The TEFL Org | Accredited TEFL Certification | Jobs Worldwide |
| Meta descripción | TEFL - Teaching English as a foreign language at home, online, abroad. Globally recognised TEFL Certificates from the most accredited TEFL course provider |
| Canonical | https://www.tefl.org/ |
| Robots Meta | index, follow |
| Título Open Graph | The TEFL Org | Accredited TEFL Certification | Jobs Worldwide |
| Descripción Open Graph | TEFL - Teaching English as a foreign language at home, online, abroad. Globally recognised TEFL Certificates from the most accredited TEFL course provider |
| Twitter Card | summary_large_image |
Título The TEFL Org | Accredited TEFL Certification | Jobs Worldwide
Meta descripción TEFL - Teaching English as a foreign language at home, online, abroad. Globally recognised TEFL Certificates from the most accredited TEFL course provider
Canonical https://www.tefl.org/
Robots Meta index, follow
Título Open Graph The TEFL Org | Accredited TEFL Certification | Jobs Worldwide
Descripción Open Graph TEFL - Teaching English as a foreign language at home, online, abroad. Globally recognised TEFL Certificates from the most accredited TEFL course provider
Twitter Card summary_large_image
Tecnologías Detectadas
| Tecnología | WordPress Vue.js Google Analytics Nuxt.js |
Tecnología WordPress Vue.js Google Analytics Nuxt.js
Cabeceras HTTP
| Accept-ranges
| bytes |
| Access-control-allow-origin
| * |
| Age
| 2554 |
| Cache-control
| public,max-age=0,must-revalidate |
| Cache-status
| "Netlify Edge"; hit; ttl=31533446 |
| Content-encoding
| gzip |
| Content-type
| text/html; charset=UTF-8 |
| Date
| Thu, 20 Aug 2026 01:56:53 GMT |
| Etag
| W/"ccfa008c6911b0fee465158d4b5ce15c-ssl-df" |
| Server
| Netlify |
| Set-cookie
| tefl_geolocation_timezone=Europe%2FParis |
| Strict-transport-security
| max-age=31536000 |
| Vary
| Accept-Encoding |
| X-nf-request-id
| 01M0EE5C0SABSQDHQVFDVVC493 |
Meta Tags
| Viewport | width=device-width,initial-scale=1 |
| Msapplication-TileColor | #ffffff |
| Theme-color | #309db6 |
| Facebook-domain-verification | 0lpmiu3g903imomm4hejvvh2hptkvv |
| Description | TEFL - Teaching English as a foreign language at home, online, abroad. Globally recognised TEFL Certificates from the most accredited TEFL course provider |
| Article:publisher | https://www.facebook.com/teflorg |
| Article:modified_time | 2025-04-29T13:08:02+00:00 |
| Robots | index, follow |
Accept-ranges bytes
Access-control-allow-origin *
Age 2554
Cache-control public,max-age=0,must-revalidate
Cache-status "Netlify Edge"; hit; ttl=31533446
Content-encoding gzip
Content-type text/html; charset=UTF-8
Date Thu, 20 Aug 2026 01:56:53 GMT
Etag W/"ccfa008c6911b0fee465158d4b5ce15c-ssl-df"
Server Netlify
Set-cookie tefl_geolocation_timezone=Europe%2FParis
Strict-transport-security max-age=31536000
Vary Accept-Encoding
X-nf-request-id 01M0EE5C0SABSQDHQVFDVVC493
