server name
api.hcaptcha.com
Mixed audience
A mix of client stacks reach this name, none dominating.
- domain
Read
client diversity
9 distinct client stacks reach this name.
concentration
0.633 traffic splits near-evenly across many unrelated stacks.
Spread is entropy over the fingerprints reaching this domain, not over the domains a fingerprint reaches. It can’t distinguish one scraper from many people — it measures the mix of software, not who runs it.
Footprint
329
observations
9
distinct clients
2026-07-19
first seen
2026-07-23
last seen
Client stacks reaching this name
- Google Chrome / Chromiumrandomising40%
- Google Chrome / Chromiumrandomising38%
- Google Chrome / Chromiumrandomising9.4%
- Apple Safari / WebKitmulti-build6.4%
- 3.0%
- Google Chrome / Chromiummulti-build1.8%
- Google Chrome / Chromiumrandomising0.6%
- Google Chrome / Chromiumrandomising0.6%
- Google Chrome / Chromiumrandomising0.3%
Busiest 9 client stacks on this page. Share is the fraction of this name’s observations. Many distinct fingerprints on a low-traffic name is itself worth a look; a blank JA3 is a permuting client — open the fingerprint for its variants.
| client | JA3 | stability | count | share | first seen | last seen |
|---|---|---|---|---|---|---|
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 132 | 40% | 2026-07-19 | 2026-07-23 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 124 | 38% | 2026-07-19 | 2026-07-22 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 31 | 9.4% | 2026-07-19 | 2026-07-22 |
| Apple Safari / WebKit Apple SecureTransport cipher-suite signature — Safari (macOS/iOS), WKWebView, and native URLSession apps; the 3DES legacy tail (0xC008/0xC012/0x000A) is Apple's tell, no other modern stack carries it. Platform entry like Android's Conscrypt: Apple system TLS legitimately offers any ALPN (h2, http/1.1, dot, none), so the cipher list alone is the signature — not ALPN-gated | — | multi-build | 21 | 6.4% | 2026-07-20 | 2026-07-20 |
| Apple Safari / WebKit Apple SecureTransport cipher-suite signature — Safari (macOS/iOS), WKWebView, and native URLSession apps; the 3DES legacy tail (0xC008/0xC012/0x000A) is Apple's tell, no other modern stack carries it. Platform entry like Android's Conscrypt: Apple system TLS legitimately offers any ALPN (h2, http/1.1, dot, none), so the cipher list alone is the signature — not ALPN-gated | ecdf4f49…186671 | fixed | 10 | 3.0% | 2026-07-20 | 2026-07-20 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | multi-build | 6 | 1.8% | 2026-07-21 | 2026-07-23 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 2 | 0.6% | 2026-07-21 | 2026-07-21 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 2 | 0.6% | 2026-07-23 | 2026-07-23 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 1 | 0.3% | 2026-07-22 | 2026-07-22 |