server name
a-api.anthropic.com
Too few observations
Too little traffic to read — a spread of 1.0 over three connections is noise; the same over sixty thousand is worth a look.
- domain
Read
client diversity
3 distinct client stacks reach this name.
concentration
0.803 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
15
observations
3
distinct clients
2026-07-19
first seen
2026-07-23
last seen
Client stacks reaching this name
- 53%
- 40%
- Mozilla Firefoxfixed6.7%
Busiest 3 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 |
|---|---|---|---|---|---|---|
| Android (Conscrypt) / Flutter (BoringSSL) mobile-BoringSSL cipher-suite signature — Android system TLS (Play Services, Firebase, OkHttp apps) and Flutter/Dart; any ALPN | c67e9dc2…670c21 | fixed | 8 | 53% | 2026-07-22 | 2026-07-23 |
| Android — Firebase / Google services (Conscrypt) Android system TLS (Conscrypt/BoringSSL); h1 — firebaseinstallations, clientservices | 9b02ebd3…621dc8 | fixed | 6 | 40% | 2026-07-22 | 2026-07-23 |
| Mozilla Firefox Firefox cipher-suite signature — also forks (Zen, LibreWolf, Tor Browser); any extension permutation or version | f19d54c8…7448e9 | fixed | 1 | 6.7% | 2026-07-19 | 2026-07-19 |