server name
b1sync.outbrain.com
Mixed audience
A mix of client stacks reach this name, none dominating.
- domain
Read
client diversity
6 distinct client stacks reach this name.
concentration
0.815 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
29
observations
6
distinct clients
2026-07-19
first seen
2026-07-23
last seen
Client stacks reaching this name
- Google Chrome / Chromiumrandomising41%
- Google Chrome / Chromiumrandomising28%
- Google Chrome / Chromiumrandomising14%
- Google Chrome / Chromiumrandomising10%
- Google Chrome / Chromiumrandomising3.4%
- Google Chrome / Chromiumrandomising3.4%
Busiest 6 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 | 12 | 41% | 2026-07-19 | 2026-07-23 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 8 | 28% | 2026-07-20 | 2026-07-23 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 4 | 14% | 2026-07-22 | 2026-07-23 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 3 | 10% | 2026-07-22 | 2026-07-23 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 1 | 3.4% | 2026-07-20 | 2026-07-20 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 1 | 3.4% | 2026-07-20 | 2026-07-20 |