Technical Information
| HTTP Status Code | 403 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 104.18.153.95 |
| Server Software | cloudflare |
| CDN | Cloudflare |
| Compression | gzip |
|
🚫 🟡 HTTP 403 Error | The server returned a 403 error. Check the access configuration. |
HTTP Status Code 403
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 104.18.153.95
Server Software cloudflare
CDN Cloudflare
Compression gzip
🚫 🟡 HTTP 403 Error The server returned a 403 error. Check the access configuration.
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://alibris.com:443 | 301 | HTTP/2 301 |
| 2 | https://www.alibris.com/ | 403 | HTTP/2 403 |
#1 URL https://alibris.com:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.alibris.com/
HTTP Status Code 403
Status HTTP/2 403
Performance
| DNS Lookup | 8.3 ms |
| TCP Connect | 10 ms |
| TLS Handshake | 17.1 ms |
| Time To First Byte (TTFB) | 42.1 ms |
| Content Download | 0.1 ms |
| Total Response Time | 42.3 ms |
DNS Lookup 8.3 ms
TCP Connect 10 ms
TLS Handshake 17.1 ms
Time To First Byte (TTFB) 42.1 ms
Content Download 0.1 ms
Total Response Time 42.3 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=2592000 |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | same-origin |
| Permissions Policy | ✔ Configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=2592000
CSP ✔ Configured
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
Referrer Policy same-origin
Permissions Policy ✔ Configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Just a moment... |
| Robots Meta | noindex,nofollow |
Title Just a moment...
Robots Meta noindex,nofollow
Detected Technologies
| Technology | Google Analytics Cloudflare |
Technology Google Analytics Cloudflare
HTTP Headers
| Date | Thu, 20 Aug 2026 13:41:17 GMT |
| Content-type | text/html; charset=UTF-8 |
| Accept-ch | Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA |
| Cf-mitigated | challenge |
| Content-security-policy | default-src 'none'; script-src 'nonce-hUNnlPAZU98WmCHIz3aWMA' 'unsafe-eval' https://challenges.cloudflare.com; script-src-attr 'none'; style-src 'unsafe-inline'; img-src 'self' https://challenges.cloudflare.com; connect-src 'self' https://challenges.cloudflare.com; frame-src 'self' https://challenges.cloudflare.com blob:; child-src 'self' https://challenges.cloudflare.com blob:; worker-src blob:; form-action http: https:; base-uri 'self' |
| Server | cloudflare |
| Critical-ch | Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA |
| Cross-origin-embedder-policy | require-corp |
| Cross-origin-opener-policy | same-origin |
| Cross-origin-resource-policy | same-origin |
| Origin-agent-cluster | ?1 |
| Permissions-policy | accelerometer=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=(),xr-spatial-tracking=* |
| Referrer-policy | same-origin |
| Server-timing | chlray;desc="a2e1d08f1c0a6f58" |
| X-content-type-options | nosniff |
| X-frame-options | SAMEORIGIN |
| Strict-transport-security | max-age=2592000 |
| Content-encoding | gzip |
| Cf-ray | a2e1d08f1c0a6f58-CDG |
| Alt-svc | h3=":443"; ma=86400 |
Meta Tags
| Content-Type | text/html; charset=UTF-8 |
| X-UA-Compatible | IE=Edge |
| Robots | noindex,nofollow |
| Viewport | width=device-width,initial-scale=1 |
| Content-security-policy | default-src 'none'; script-src 'nonce-hUNnlPAZU98WmCHIz3aWMA' 'unsafe-eval' https://challenges.cloudflare.com; script-src-attr 'none'; style-src 'unsafe-inline'; img-src 'self' https://challenges.cloudflare.com; connect-src 'self' https://challenges.cloudflare.com; frame-src 'self' https://challenges.cloudflare.com blob:; child-src 'self' https://challenges.cloudflare.com blob:; worker-src blob:; form-action http: https:; base-uri 'self' |
| Refresh | 360 |
Date Thu, 20 Aug 2026 13:41:17 GMT
Content-type text/html; charset=UTF-8
Accept-ch Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
Cf-mitigated challenge
Content-security-policy default-src 'none'; script-src 'nonce-hUNnlPAZU98WmCHIz3aWMA' 'unsafe-eval' https://challenges.cloudflare.com; script-src-attr 'none'; style-src 'unsafe-inline'; img-src 'self' https://challenges.cloudflare.com; connect-src 'self' https://challenges.cloudflare.com; frame-src 'self' https://challenges.cloudflare.com blob:; child-src 'self' https://challenges.cloudflare.com blob:; worker-src blob:; form-action http: https:; base-uri 'self'
Server cloudflare
Critical-ch Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
Cross-origin-embedder-policy require-corp
Cross-origin-opener-policy same-origin
Cross-origin-resource-policy same-origin
Origin-agent-cluster ?1
Permissions-policy accelerometer=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=(),xr-spatial-tracking=*
Referrer-policy same-origin
Server-timing chlray;desc="a2e1d08f1c0a6f58"
X-content-type-options nosniff
X-frame-options SAMEORIGIN
Strict-transport-security max-age=2592000
Content-encoding gzip
Cf-ray a2e1d08f1c0a6f58-CDG
Alt-svc h3=":443"; ma=86400
