Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 23.185.0.1 |
| Server Software | nginx |
| CDN | CDN (HIT, HIT) |
| Compression | gzip |
|
🔒 🟡 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 Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 23.185.0.1
Server Software nginx
CDN CDN (HIT, HIT)
Compression gzip
🔒 🟡 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 Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
Performance
| DNS Lookup | 14.1 ms |
| TCP Connect | 15.3 ms |
| TLS Handshake | 5.5 ms |
| Time To First Byte (TTFB) | 25.6 ms |
| Content Download | 0.3 ms |
| Total Response Time | 25.9 ms |
DNS Lookup 14.1 ms
TCP Connect 15.3 ms
TLS Handshake 5.5 ms
Time To First Byte (TTFB) 25.6 ms
Content Download 0.3 ms
Total Response Time 25.9 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=300 |
| CSP | ⚠ Not configured |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=300
CSP ⚠ Not configured
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Welcome | Open Yale Courses |
| Canonical | https://oyc.yale.edu/node/3 |
Title Welcome | Open Yale Courses
Canonical https://oyc.yale.edu/node/3
Detected Technologies
| Technology | Drupal Google Analytics Nginx |
Technology Drupal Google Analytics Nginx
HTTP Headers
| Cache-control
| max-age=3600, public |
| Content-encoding
| gzip |
| Content-language
| en |
| Content-type
| text/html; charset=UTF-8 |
| Etag
| W/"1784928228" |
| Expires
| Sun, 19 Nov 1978 05:00:00 GMT |
| Last-modified
| Fri, 24 Jul 2026 21:23:48 GMT |
| Server
| nginx |
| Strict-transport-security
| max-age=300 |
| X-content-type-options
| nosniff |
| X-drupal-cache
| HIT |
| X-drupal-dynamic-cache
| MISS |
| X-frame-options
| SAMEORIGIN |
| X-generator
| Drupal 10 (https://www.drupal.org) |
| X-pantheon-styx-hostname
| styx-us-a-7ffbcf568d-n52cn |
| X-styx-req-id
| 919e85a7-87a6-11f1-9673-1a8faa3b089b |
| Date
| Sat, 25 Jul 2026 06:40:40 GMT |
| X-served-by
| cache-chi-kmdw8640027-CHI, cache-par-lfpb1150085-PAR |
| X-cache
| HIT, HIT |
| X-cache-hits
| 14, 0 |
| X-timer
| S1784961640.105756,VS0,VE3 |
| Vary
| Accept-Encoding, Cookie, Cookie, Cookie |
| Age
| 577 |
| Accept-ranges
| bytes |
| Via
| 1.1 varnish, 1.1 varnish |
| Content-length
| 6818 |
Meta Tags
| Generator | Drupal 10 (https://www.drupal.org) |
| MobileOptimized | width |
| HandheldFriendly | true |
| Viewport | width=device-width, initial-scale=1.0 |
Cache-control max-age=3600, public
Content-encoding gzip
Content-language en
Content-type text/html; charset=UTF-8
Etag W/"1784928228"
Expires Sun, 19 Nov 1978 05:00:00 GMT
Last-modified Fri, 24 Jul 2026 21:23:48 GMT
Server nginx
Strict-transport-security max-age=300
X-content-type-options nosniff
X-drupal-cache HIT
X-drupal-dynamic-cache MISS
X-frame-options SAMEORIGIN
X-generator Drupal 10 (https://www.drupal.org)
X-pantheon-styx-hostname styx-us-a-7ffbcf568d-n52cn
X-styx-req-id 919e85a7-87a6-11f1-9673-1a8faa3b089b
Date Sat, 25 Jul 2026 06:40:40 GMT
X-served-by cache-chi-kmdw8640027-CHI, cache-par-lfpb1150085-PAR
X-cache HIT, HIT
X-cache-hits 14, 0
X-timer S1784961640.105756,VS0,VE3
Vary Accept-Encoding, Cookie, Cookie, Cookie
Age 577
Accept-ranges bytes
Via 1.1 varnish, 1.1 varnish
Content-length 6818
