Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 3.219.152.91 |
| Server Software | nginx/1.6.0 |
|
🔒 🟡 Mixed Content (8 HTTP resources) | The page is served over HTTPS but loads 8 resource(s) over HTTP. This may be blocked in modern browsers. |
|
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). |
|
ℹ 🔵 No Compression | The server does not use Gzip or Brotli. Enable compression to reduce bandwidth usage. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 3.219.152.91
Server Software nginx/1.6.0
🔒 🟡 Mixed Content (8 HTTP resources) The page is served over HTTPS but loads 8 resource(s) over HTTP. This may be blocked in modern browsers.
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).
ℹ 🔵 No Compression The server does not use Gzip or Brotli. Enable compression to reduce bandwidth usage.
Performance
| DNS Lookup | 13.5 ms |
| TCP Connect | 96.2 ms |
| TLS Handshake | 169.3 ms |
| Time To First Byte (TTFB) | 379.5 ms |
| Content Download | 247.5 ms |
| Total Response Time | 627 ms |
DNS Lookup 13.5 ms
TCP Connect 96.2 ms
TLS Handshake 169.3 ms
Time To First Byte (TTFB) 379.5 ms
Content Download 247.5 ms
Total Response Time 627 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 | Holt McDougal Online |
Title Holt McDougal Online
Detected Technologies
| Technology | jQuery Google Analytics Nginx |
Technology jQuery Google Analytics Nginx
HTTP Headers
| Cache-control
| no-cache="set-cookie" |
| Cache-Control
| no-cache, no-store, must-revalidate |
| Content-Type
| text/html;charset=ISO-8859-1 |
| Date
| Wed, 19 Aug 2026 22:04:40 GMT |
| Expires
| 0 |
| Pragma
| no-cache |
| Server
| nginx/1.6.0 |
| Transfer-encoding
| chunked |
| Connection
| keep-alive |
Meta Tags
| Cache-Control | no-cache |
| Pragma | no-cache |
| Refresh | 0;URL= |
Cache-control no-cache="set-cookie"
Cache-Control no-cache, no-store, must-revalidate
Content-Type text/html;charset=ISO-8859-1
Date Wed, 19 Aug 2026 22:04:40 GMT
Expires 0
Pragma no-cache
Server nginx/1.6.0
Transfer-encoding chunked
Connection keep-alive
