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 | 102.3 ms |
| TCP Connect | 196.5 ms |
| TLS Handshake | 103.6 ms |
| Time To First Byte (TTFB) | 581.7 ms |
| Content Download | 93.9 ms |
| Total Response Time | 675.6 ms |
DNS Lookup 102.3 ms
TCP Connect 196.5 ms
TLS Handshake 103.6 ms
Time To First Byte (TTFB) 581.7 ms
Content Download 93.9 ms
Total Response Time 675.6 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
| Sat, 29 Aug 2026 08:00:30 GMT |
| Last-modified
| Sat, 29 Aug 2026 07:49:14 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 Sat, 29 Aug 2026 08:00:30 GMT
Last-modified Sat, 29 Aug 2026 07:49:14 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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