server name
www.booking.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
0.446one client stack dominates — normal for an API or a CDN origin.
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
1,307
observations
9
distinct clients
2026-07-19
first seen
2026-07-23
last seen
Client stacks reaching this name
- t13d1516h1_8da…da3f94cdrandomising71%
- Python requests / urllib3multi-build15%
- Google Chrome / Chromiumrandomising5.9%
- Google Chrome / Chromiumrandomising4.8%
- Google Chrome / Chromiumrandomising2.6%
- 0.3%
- t13d1513h2_8da…ead5a15bmulti-build0.2%
- <0.1%
- Google Chrome / Chromiumrandomising<0.1%
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 |
|---|---|---|---|---|---|---|
| t13d1516h1_8daaf…da3f94cd | — | randomising | 927 | 71% | 2026-07-23 | 2026-07-23 |
| Python requests / urllib3 official CPython build (OpenSSL 3.0.x — Windows / macOS / uv); ja4_b is the build, ja4_c b26ce05bbdd6 is urllib3's own SSLContext (post_handshake_auth, no session ticket) — httpx on the same build differs by that one extension. First seen as Windows 10, Python 3.14. | — | multi-build | 197 | 15% | 2026-07-19 | 2026-07-23 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 77 | 5.9% | 2026-07-19 | 2026-07-23 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 63 | 4.8% | 2026-07-20 | 2026-07-23 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 34 | 2.6% | 2026-07-19 | 2026-07-23 |
| t13d5212h2_b262b…362c5eac | d67b0948…14309f | fixed | 4 | 0.3% | 2026-07-19 | 2026-07-19 |
| t13d1513h2_8daaf…ead5a15b | — | multi-build | 3 | 0.2% | 2026-07-19 | 2026-07-19 |
| t13d2313h2_24fc4…ead5a15b | 3d88ffaf…38a0b7 | fixed | 1 | <0.1% | 2026-07-19 | 2026-07-19 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 1 | <0.1% | 2026-07-19 | 2026-07-19 |