Technical Information
| HTTP Status Code | 403 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 52.20.84.62 |
| 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 52.20.84.62
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://hardcover.com:443 | 302 | HTTP/2 302 |
| 2 | https://www.atom.com/name/Hardcover | 403 | HTTP/2 403 |
#1 URL https://hardcover.com:443
HTTP Status Code 302
Status HTTP/2 302
#2 URL https://www.atom.com/name/Hardcover
HTTP Status Code 403
Status HTTP/2 403
Performance
| DNS Lookup | 13.3 ms |
| TCP Connect | 15 ms |
| TLS Handshake | 7.9 ms |
| Time To First Byte (TTFB) | 33.1 ms |
| Content Download | 0.1 ms |
| Total Response Time | 33.2 ms |
DNS Lookup 13.3 ms
TCP Connect 15 ms
TLS Handshake 7.9 ms
Time To First Byte (TTFB) 33.1 ms
Content Download 0.1 ms
Total Response Time 33.2 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000; includeSubDomains; preload |
| 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=31536000; includeSubDomains; preload
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, 27 Aug 2026 04:35:27 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-nWtQAOXq0Jto8d3HDdn1V2' '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="a3185ea19bc42a04" |
| X-content-type-options | nosniff |
| X-frame-options | SAMEORIGIN |
| Strict-transport-security | max-age=31536000; includeSubDomains; preload |
| Speculation-rules | "/cdn-cgi/speculation" |
| Vary | accept-encoding |
| Set-cookie | __cf_bm=RiD.AKcSc2Sgt.YZh5V446bZeICrQqGfPsbDhttGUjU-1787805327.612795-1.0.1.1-YyXQ0F0KVZz.AHjAfrp.yLcqMA6ewktKmDgZFxLmHlXwqy08i2u15Qtg99locFRWcwxnEhQ2fX__MW.LhLmaaBQnGZrAlMITRUvgM7dh3s_LQvOYeueaC2ROusxNjfB6; HttpOnly; SameSite=None; Secure; Path=/; Domain=atom.com; Expires=Thu, 27 Aug 2026 05:05:27 GMT |
| Content-encoding | gzip |
| Cf-ray | a3185ea19bc42a04-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-nWtQAOXq0Jto8d3HDdn1V2' '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, 27 Aug 2026 04:35:27 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-nWtQAOXq0Jto8d3HDdn1V2' '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="a3185ea19bc42a04"
X-content-type-options nosniff
X-frame-options SAMEORIGIN
Strict-transport-security max-age=31536000; includeSubDomains; preload
Speculation-rules "/cdn-cgi/speculation"
Vary accept-encoding
Set-cookie __cf_bm=RiD.AKcSc2Sgt.YZh5V446bZeICrQqGfPsbDhttGUjU-1787805327.612795-1.0.1.1-YyXQ0F0KVZz.AHjAfrp.yLcqMA6ewktKmDgZFxLmHlXwqy08i2u15Qtg99locFRWcwxnEhQ2fX__MW.LhLmaaBQnGZrAlMITRUvgM7dh3s_LQvOYeueaC2ROusxNjfB6; HttpOnly; SameSite=None; Secure; Path=/; Domain=atom.com; Expires=Thu, 27 Aug 2026 05:05:27 GMT
Content-encoding gzip
Cf-ray a3185ea19bc42a04-CDG
Alt-svc h3=":443"; ma=86400
