first seen 2026-06-22 13:37 · last seen 2026-11-01 00:09 · JSON
Distinct clients per day (last 30 days, peak 1/day)
Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.
Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.
TLS ClientHello (JA4)
fingerprint
co-occurrences
q13d0311h3_55b375c5d22e_f2a83c8e78aeMatch?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, urlsession 6.1.2, urlsession 6.3.3, +6 more.The fingerprint page shows the full measured match list. More on the catalog.
0a0a,001d,0017,0018,0019Match?Exact match in Thumbprint's published controlled catalog captures: urlsession 6.1.2, safari 27.2.The fingerprint page shows the full measured match list. More on the catalog.
3
Cross-transport links
TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).