server name
claude.ai
Mixed audience
A mix of client stacks reach this name, none dominating.
- domain
Read
client diversity
8 distinct client stacks reach this name.
concentration
0.751 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
36
observations
8
distinct clients
2026-07-19
first seen
2026-07-23
last seen
Client stacks reaching this name
- Google Chrome / Chromiumrandomising47%
- Google Chrome / Chromiumrandomising22%
- 8.3%
- Google Chrome / Chromiumrandomising8.3%
- 5.6%
- t12d120700_d34…09cd1eadunclassified2.8%
- Google Chrome / Chromiummulti-build2.8%
- Node.js fetch / undicimulti-build2.8%
Busiest 8 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 | 17 | 47% | 2026-07-22 | 2026-07-22 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 8 | 22% | 2026-07-19 | 2026-07-23 |
| t13d141100_cbb20…8521abd4 | 6fcb7aa1…478ab4 | fixed | 3 | 8.3% | 2026-07-19 | 2026-07-19 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | randomising | 3 | 8.3% | 2026-07-19 | 2026-07-19 |
| curl / libcurl (curl, PHP ext-curl, Guzzle) libcurl + OpenSSL 3, Debian-family build; h2 | 32e4b881…92a769 | fixed | 2 | 5.6% | 2026-07-20 | 2026-07-20 |
| t12d120700_d34a8…09cd1ead | 6c0f0a34…2c53fd | unclassified | 1 | 2.8% | 2026-07-19 | 2026-07-19 |
| Google Chrome / Chromium Chromium cipher-suite signature — Chrome, Edge, Brave, Opera; any extension permutation or version | — | multi-build | 1 | 2.8% | 2026-07-19 | 2026-07-19 |
| Node.js fetch / undici Node 22 — bundled OpenSSL 3 (newer) | — | multi-build | 1 | 2.8% | 2026-07-20 | 2026-07-20 |