Technical Information
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| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 141.193.213.10 |
| Server Software | cloudflare |
| CDN | Cloudflare |
| Compression | gzip |
|
🔒 🟡 Mixed Content (1 HTTP resources) | The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 141.193.213.10
Server Software cloudflare
CDN Cloudflare
Compression gzip
🔒 🟡 Mixed Content (1 HTTP resources) The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers.
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://www.landmarks-stl.org:443 | 301 | HTTP/2 301 |
| 2 | http://landmarks-stl.org/ | 301 | HTTP/1.1 301 Moved Permanently |
| 3 | https://landmarks-stl.org/ | 200 | HTTP/2 200 |
#1 URL https://www.landmarks-stl.org:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL http://landmarks-stl.org/
HTTP Status Code 301
Status HTTP/1.1 301 Moved Permanently
#3 URL https://landmarks-stl.org/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 0.8 ms |
| TCP Connect | 2.7 ms |
| TLS Handshake | 8.7 ms |
| Time To First Byte (TTFB) | 36.3 ms |
| Content Download | 4.6 ms |
| Total Response Time | 40.8 ms |
DNS Lookup 0.8 ms
TCP Connect 2.7 ms
TLS Handshake 8.7 ms
Time To First Byte (TTFB) 36.3 ms
Content Download 4.6 ms
Total Response Time 40.8 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=63072000; includeSubDomains; preload |
| CSP | ✔ Configured |
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| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=63072000; includeSubDomains; preload
CSP ✔ Configured
X-Frame-Options ✔ SAMEORIGIN
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Referrer Policy origin
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Landmarks Association of St. Louis | Preserving St. Louis' Architectural Heritage |
| Meta Description | A public, not-for-profit organization. Incorporated in 1959, its mission is to preserve, enhance, and promote St. Louis' architectural heritage. |
| Canonical | https://landmarks-stl.org/ |
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| Open Graph Description | A public, not-for-profit organization. Incorporated in 1959, its mission is to preserve, enhance, and promote St. Louis' architectural heritage. |
| Open Graph Image | https://landmarks-stl.org/wp-content/uploads/2025/08/scho... |
| Twitter Card | summary_large_image |
Title Landmarks Association of St. Louis | Preserving St. Louis' Architectural Heritage Meta Description A public, not-for-profit organization. Incorporated in 1959, its mission is to preserve, enhance, and promote St. Louis' architectural heritage. Canonical https://landmarks-stl.org/ Robots Meta index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 Open Graph Title Landmarks Association of St. Louis | Preserving St. Louis' Architectural Heritage Open Graph Description A public, not-for-profit organization. Incorporated in 1959, its mission is to preserve, enhance, and promote St. Louis' architectural heritage. Open Graph Image https://landmarks-stl.org/wp-content/uploads/2025/08/scho... Twitter Card summary_large_image Detected Technologies
| Technology | WordPress WooCommerce jQuery Google Analytics Google Tag Manager Cloudflare PHP |
Technology WordPress WooCommerce jQuery Google Analytics Google Tag Manager Cloudflare PHP
HTTP Headers
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| Tue, 28 Jul 2026 01:53:07 GMT |
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| Description | A public, not-for-profit organization. Incorporated in 1959, its mission is to preserve, enhance, and promote St. Louis' architectural heritage. |
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