Technical Information
| HTTP Status Code | 406 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 151.101.1.55 |
| CDN | CDN (MISS) |
|
🚫 🟡 HTTP 406 Error | The server returned a 406 error. Check the access configuration. |
|
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 406
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 151.101.1.55
CDN CDN (MISS)
🚫 🟡 HTTP 406 Error The server returned a 406 error. Check the access configuration.
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).
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://cargurus.com:443 | 301 | HTTP/2 301 |
| 2 | https://www.cargurus.com/ | 406 | HTTP/2 406 |
#1 URL https://cargurus.com:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.cargurus.com/
HTTP Status Code 406
Status HTTP/2 406
Performance
| DNS Lookup | 7.4 ms |
| TCP Connect | 8.5 ms |
| TLS Handshake | 4.8 ms |
| Time To First Byte (TTFB) | 43.9 ms |
| Content Download | 0 ms |
| Total Response Time | 43.9 ms |
DNS Lookup 7.4 ms
TCP Connect 8.5 ms
TLS Handshake 4.8 ms
Time To First Byte (TTFB) 43.9 ms
Content Download 0 ms
Total Response Time 43.9 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
HTTP Headers
| Cache-control | private, no-store |
| Accept-ranges | bytes |
| Date | Thu, 20 Aug 2026 10:32:15 GMT |
| Via | 1.1 varnish |
| X-served-by | cache-par-lfpb1150057-PAR, cache-par-lfpb1150057-PAR |
| X-cache | MISS |
| X-cache-hits | 0 |
| X-timer | S1787221935.280132,VS0,VE29 |
| Alt-svc | h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400 |
Cache-control private, no-store
Accept-ranges bytes
Date Thu, 20 Aug 2026 10:32:15 GMT
Via 1.1 varnish
X-served-by cache-par-lfpb1150057-PAR, cache-par-lfpb1150057-PAR
X-cache MISS
X-cache-hits 0
X-timer S1787221935.280132,VS0,VE29
Alt-svc h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
