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unrecognised fingerprint

t12d1410h1_c866b44c5a26_f88f2b2eb673

Multiple builds

A few stable builds share this JA4 — not per-connection randomisation, and not yet a named client.

TLS 1.2ALPN http/1.12026-07-19 → 2026-07-23
JA4
JA4_r
JA3
several builds share this JA4 under different JA3s — no single value is canonical.
JA3_raw
—

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catalog identity
No ground-truth build has reproduced this hello yet — absence is not a verdict.
self-randomisation
multi-build · 3 JA3 — 3 JA3s over 35 connections, but most repeat: a handful of stable builds sharing one JA4 rather than per-connection randomisation.
reach
0.857 roams across 12 domains — spread is how evenly, not how many.

Spread measures reach, not intent: it can’t tell one scraper visiting 500 domains from 500 people visiting one each. Stability is a claim about software — whether the stack is deterministic — nothing about who runs it.

Footprint

35
observations
12
domains reached
2026-07-19
first seen
2026-07-23
last seen

ClientHello anatomy

The underscore groups of JA4_r are the raw cipher suites · extensions · signature algorithms behind the hash.

TLS version
TLS 1.2
ALPN (wire order)
http/1.1
EC point formats
0x0000
Post-quantum key share
absent

The post-quantum key share is a structural fact about the hello, not a verdict — GREASE values are flagged the same neutral way.

cipher suites(14)
  1. 00xc02bTLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
  2. 10xc02cTLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
  3. 20xcca9TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305
  4. 30xc02fTLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
  5. 40xc030TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
  6. 50xcca8TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305
  7. 60xc009TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
  8. 70xc00aTLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
  9. 80xc013TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
  10. 90xc014TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
  11. 100x009cTLS_RSA_WITH_AES_128_GCM_SHA256
  12. 110x009dTLS_RSA_WITH_AES_256_GCM_SHA384
  13. 120x002fTLS_RSA_WITH_AES_128_CBC_SHA
  14. 130x0035TLS_RSA_WITH_AES_256_CBC_SHA
extensions(10)sorted
  1. 00x0000server_name (SNI)
  2. 10x0005status_request (OCSP)
  3. 20x000asupported_groups
  4. 30x000bec_point_formats
  5. 40x000dsignature_algorithms
  6. 50x0010application_layer_protocol_negotiation (ALPN)
  7. 60x0015padding
  8. 70x0017extended_master_secret
  9. 80x0023session_ticket
  10. 90xff01renegotiation_info

Stored sorted — under one JA4 the wire order varies by construction, so no single order is “the” order.

curves / groups(3)
  1. 00x001dx25519
  2. 10x0017secp256r1 (P-256)
  3. 20x0018secp384r1 (P-384)
signature algorithms(9)
  1. 00x0403ecdsa_secp256r1_sha256
  2. 10x0804rsa_pss_rsae_sha256
  3. 20x0401rsa_pkcs1_sha256
  4. 30x0503ecdsa_secp384r1_sha384
  5. 40x0805rsa_pss_rsae_sha384
  6. 50x0501rsa_pkcs1_sha384
  7. 60x0806rsa_pss_rsae_sha512
  8. 70x0601rsa_pkcs1_sha512
  9. 80x0201rsa_pkcs1_sha1

JA3 variants

3 distinct JA3 hashes collapse into this one JA4.

#JA3JA3_rawobsshare
0771,49195-49196-52393-…29-23-24,02160%
1771,49195-49196-52393-…29-23-24,01337%
2771,52393-49195-49196-…29-23-24,012.9%

JA3 hashes preserve wire order, so a permuting client mints a new one per connection; JA4 sorts the same set, which is why they share one JA4. Every hash here belongs to this fingerprint — there is no per-JA3 page.

Reach — domains contacted

Top 12 of 12. Share is the fraction of this fingerprint’s observations reaching each name.