Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 211.9.58.184 |
| Server Software | nginx/1.24.0 (Ubuntu) |
| Compression | gzip |
|
🔒 🟡 Mixed Content (14 HTTP resources) | The page is served over HTTPS but loads 14 resource(s) over HTTP. This may be blocked in modern browsers. |
|
🕐 🟡 Slow Response (1073 ms) | Response time exceeds 1 second. Consider optimizing the server or using caching. |
|
ℹ 🔵 Missing HSTS | HTTP Strict Transport Security is not configured. Recommended for HTTPS sites. |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
|
ℹ 🔵 Missing X-Frame-Options | The site can be embedded in iframes by third parties (clickjacking risk). |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 211.9.58.184
Server Software nginx/1.24.0 (Ubuntu)
Compression gzip
🔒 🟡 Mixed Content (14 HTTP resources) The page is served over HTTPS but loads 14 resource(s) over HTTP. This may be blocked in modern browsers.
🕐 🟡 Slow Response (1073 ms) Response time exceeds 1 second. Consider optimizing the server or using caching.
ℹ 🔵 Missing HSTS HTTP Strict Transport Security is not configured. Recommended for HTTPS sites.
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Performance
| DNS Lookup | 1.7 ms |
| TCP Connect | 267.7 ms |
| TLS Handshake | 537.6 ms |
| Time To First Byte (TTFB) | 1073.1 ms |
| Content Download | 0.1 ms |
| Total Response Time | 1073.2 ms |
DNS Lookup 1.7 ms
TCP Connect 267.7 ms
TLS Handshake 537.6 ms
Time To First Byte (TTFB) 1073.1 ms
Content Download 0.1 ms
Total Response Time 1073.2 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✘ Not configured |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | C comunity Home Page |
| Meta Description | N. Luhmann, D. Engelbart C community and AB activities for better social behavior.頭脳の延長としての情報システム augmentation of human intellectual capability |
| Robots Meta | ALL |
Title C comunity Home Page
Meta Description N. Luhmann, D. Engelbart C community and AB activities for better social behavior.頭脳の延長としての情報システム augmentation of human intellectual capability
Robots Meta ALL
Detected Technologies
| Technology | Bootstrap Google Analytics Nginx |
Technology Bootstrap Google Analytics Nginx
HTTP Headers
| Server
| nginx/1.24.0 (Ubuntu) |
| Date
| Thu, 20 Aug 2026 06:58:16 GMT |
| Content-Type
| text/html |
| Transfer-Encoding
| chunked |
| Connection
| keep-alive |
| Last-Modified
| Wed, 14 Sep 2016 07:59:59 GMT |
| ETag
| W/"4c5089-3bd9-1d989dc0" |
| Content-Language
| ja |
| Content-Encoding
| gzip |
Meta Tags
| Robots | ALL |
| Keywords | Hirohide Yamada |
| Description | N. Luhmann, D. Engelbart C community and AB activities for better social behavior.頭脳の延長としての情報システム augmentation of human intellectual capability |
Server nginx/1.24.0 (Ubuntu)
Date Thu, 20 Aug 2026 06:58:16 GMT
Content-Type text/html
Transfer-Encoding chunked
Connection keep-alive
Last-Modified Wed, 14 Sep 2016 07:59:59 GMT
ETag W/"4c5089-3bd9-1d989dc0"
Content-Language ja
Content-Encoding gzip
