Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 157.245.120.212 |
| Server Software | BitNinja-WafPro |
| Compression | gzip |
|
🔒 🟡 Mixed Content (3 HTTP resources) | The page is served over HTTPS but loads 3 resource(s) over HTTP. This may be blocked in modern browsers. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 157.245.120.212
Server Software BitNinja-WafPro
Compression gzip
🔒 🟡 Mixed Content (3 HTTP resources) The page is served over HTTPS but loads 3 resource(s) over HTTP. This may be blocked in modern browsers.
Performance
| DNS Lookup | 101.2 ms |
| TCP Connect | 196.1 ms |
| TLS Handshake | 105.4 ms |
| Time To First Byte (TTFB) | 617.4 ms |
| Content Download | 95 ms |
| Total Response Time | 712.5 ms |
DNS Lookup 101.2 ms
TCP Connect 196.1 ms
TLS Handshake 105.4 ms
Time To First Byte (TTFB) 617.4 ms
Content Download 95 ms
Total Response Time 712.5 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000; includeSubDomains |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | strict-origin-when-cross-origin |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000; includeSubDomains
CSP ✔ Configured
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
Referrer Policy strict-origin-when-cross-origin
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | 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 Description | 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 |
| Open Graph Title | Networked Digital Library of Theses and Dissertations |
| Open Graph Description | 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 |
Title 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 Description 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
Open Graph Title Networked Digital Library of Theses and Dissertations
Open Graph Description 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
Detected Technologies
| Technology | WordPress jQuery Google Analytics PHP |
Technology WordPress jQuery Google Analytics PHP
HTTP Headers
| 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 12:00:22 GMT |
| Last-modified
| Fri, 28 Aug 2026 11:44:17 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 12:00:22 GMT
Last-modified Fri, 28 Aug 2026 11:44:17 GMT
Referrer-policy strict-origin-when-cross-origin
Server BitNinja-WafPro
Strict-transport-security max-age=31536000; includeSubDomains
Vary Accept-Encoding,Cookie
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