Información Técnica
| Código de estado HTTP | 200 |
| Versión HTTP | HTTP/1.1 |
| HTTPS | ✔ Disponible |
| Dirección IP | 157.245.120.212 |
| Software del servidor | BitNinja-WafPro |
| Compresión | gzip |
|
🔒 🟡 Mixed Content (3 recursos HTTP) | La página se sirve por HTTPS pero carga 3 recurso(s) por HTTP. Esto puede bloquearse en navegadores modernos. |
Código de estado HTTP 200
Versión HTTP HTTP/1.1
HTTPS ✔ Disponible
Dirección IP 157.245.120.212
Software del servidor BitNinja-WafPro
Compresión gzip
🔒 🟡 Mixed Content (3 recursos HTTP) La página se sirve por HTTPS pero carga 3 recurso(s) por HTTP. Esto puede bloquearse en navegadores modernos.
Rendimiento
| Resolución DNS | 109.4 ms |
| Conexión TCP | 201.3 ms |
| Negociación TLS | 103.8 ms |
| Tiempo hasta el primer byte (TTFB) | 591.5 ms |
| Descarga de contenido | 92.5 ms |
| Tiempo total de respuesta | 684 ms |
Resolución DNS 109.4 ms
Conexión TCP 201.3 ms
Negociación TLS 103.8 ms
Tiempo hasta el primer byte (TTFB) 591.5 ms
Descarga de contenido 92.5 ms
Tiempo total de respuesta 684 ms
Seguridad
| HTTPS | ✔ Activado |
| HSTS | ✔ max-age=31536000; includeSubDomains |
| CSP | ✔ Configurado |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| Política de Referrer | strict-origin-when-cross-origin |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Activado
HSTS ✔ max-age=31536000; includeSubDomains
CSP ✔ Configurado
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
Política de Referrer strict-origin-when-cross-origin
HTTP/2 ⚠ HTTP/1.1
Comprobación SEO
| Título | Networked Digital Library of Theses and Dissertations - NDLTD is an international organization dedicated to promoting the adoption, creation, use, dissemination, and preservation of electronic theses and dissertations (ETDs). |
| Meta descripción | NDLTD is an international organization dedicated to promoting the adoption, creation, use, dissemination, and preservation of electronic theses and dissertations (ETDs). |
| Canonical | https://ndltd.org/ |
| Robots Meta | index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 |
| Título Open Graph | Networked Digital Library of Theses and Dissertations |
| Descripción Open Graph | NDLTD is an international organization dedicated to promoting the adoption, creation, use, dissemination, and preservation of electronic theses and dissertations (ETDs). |
| Twitter Card | summary_large_image |
Título Networked Digital Library of Theses and Dissertations - NDLTD is an international organization dedicated to promoting the adoption, creation, use, dissemination, and preservation of electronic theses and dissertations (ETDs).
Meta descripción NDLTD is an international organization dedicated to promoting the adoption, creation, use, dissemination, and preservation of electronic theses and dissertations (ETDs).
Canonical https://ndltd.org/
Robots Meta index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Título Open Graph Networked Digital Library of Theses and Dissertations
Descripción Open Graph NDLTD is an international organization dedicated to promoting the adoption, creation, use, dissemination, and preservation of electronic theses and dissertations (ETDs).
Twitter Card summary_large_image
Tecnologías Detectadas
| Tecnología | WordPress jQuery Google Analytics PHP |
Tecnología WordPress jQuery Google Analytics PHP
Cabeceras HTTP
| Alt-svc
| h3=":60413"; ma=2592000,h3=":60414"; ma=2592000,h3=":60418"; ma=2592000 |
| Cache-control
| max-age=3, must-revalidate |
| Content-encoding
| gzip |
| Content-security-policy
| upgrade-insecure-requests |
| Content-type
| text/html; charset=UTF-8 |
| Date
| Fri, 28 Aug 2026 13:22:02 GMT |
| Last-modified
| Fri, 28 Aug 2026 13:15:40 GMT |
| Referrer-policy
| strict-origin-when-cross-origin |
| Server
| BitNinja-WafPro |
| Strict-transport-security
| max-age=31536000; includeSubDomains |
| Vary
| Accept-Encoding,Cookie |
| Via
| 1.1 Caddy |
| X-content-type-options
| nosniff |
| X-frame-options
| SAMEORIGIN |
| X-xss-protection
| 1; mode=block |
Meta Tags
| Robots | index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 |
| Viewport | width=device-width, initial-scale=1 |
| Description | NDLTD is an international organization dedicated to promoting the adoption, creation, use, dissemination, and preservation of electronic theses and dissertations (ETDs). |
| Google-site-verification | MHt8RT3jq0M51ER1mluZuTX5WfFWaWeAZcxNk48xRCE |
| Generator | WordPress 7.1 |
| Tec-api-version | v1 |
| Tec-api-origin | https://ndltd.org |
| Msapplication-TileImage |  |
Alt-svc h3=":60413"; ma=2592000,h3=":60414"; ma=2592000,h3=":60418"; ma=2592000
Cache-control max-age=3, must-revalidate
Content-encoding gzip
Content-security-policy upgrade-insecure-requests
Content-type text/html; charset=UTF-8
Date Fri, 28 Aug 2026 13:22:02 GMT
Last-modified Fri, 28 Aug 2026 13:15:40 GMT
Referrer-policy strict-origin-when-cross-origin
Server BitNinja-WafPro
Strict-transport-security max-age=31536000; includeSubDomains
Vary Accept-Encoding,Cookie
Via 1.1 Caddy
X-content-type-options nosniff
X-frame-options SAMEORIGIN
X-xss-protection 1; mode=block
