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unrecognised fingerprint

t13d241100_df98b6d6dfe4_d8929e3a3a62

Deterministic client

One JA3 across every connection — a deterministic stack, the shape of a library or command-line client, with no catalogue name yet.

TLS 1.3no ALPN2026-07-22 → 2026-07-23
JA4
JA4_r
JA3
JA3_raw

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catalog identity
No ground-truth build has reproduced this hello yet — absence is not a verdict.
self-randomisation
fixed — one JA3 across 131 connections: a deterministic stack. Libraries and command-line clients look like this.
reach
0.600 roams across 3 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

131
observations
3
domains reached
2026-07-22
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 1.3
ALPN (wire order)
—
EC point formats
0x0000, 0x0001, 0x0002
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(24)
  1. 00x1301TLS_AES_128_GCM_SHA256
  2. 10x1302TLS_AES_256_GCM_SHA384
  3. 20x1303TLS_CHACHA20_POLY1305_SHA256
  4. 30xc02cTLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
  5. 40xc02bTLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
  6. 50xcca9TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305
  7. 60xc030TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
  8. 70xc02fTLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
  9. 80xcca8TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305
  10. 90xc024TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
  11. 100xc023TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
  12. 110xc00aTLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
  13. 120xc009TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
  14. 130xc028TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
  15. 140xc027TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
  16. 150xc014TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
  17. 160xc013TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
  18. 170x009dTLS_RSA_WITH_AES_256_GCM_SHA384
  19. 180x009cTLS_RSA_WITH_AES_128_GCM_SHA256
  20. 190x003dTLS_RSA_WITH_AES_256_CBC_SHA256
  21. 200x003cTLS_RSA_WITH_AES_128_CBC_SHA256
  22. 210x0035TLS_RSA_WITH_AES_256_CBC_SHA
  23. 220x002fTLS_RSA_WITH_AES_128_CBC_SHA
  24. 230x00ffTLS_EMPTY_RENEGOTIATION_INFO
extensions(11)sorted
  1. 00x0000server_name (SNI)
  2. 10x0005status_request (OCSP)
  3. 20x000asupported_groups
  4. 30x000bec_point_formats
  5. 40x000dsignature_algorithms
  6. 50x0015padding
  7. 60x0017extended_master_secret
  8. 70x0023session_ticket
  9. 80x002bsupported_versions
  10. 90x002dpsk_key_exchange_modes
  11. 100x0033key_share

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

curves / groups(4)
  1. 00x001dx25519
  2. 10x0017secp256r1 (P-256)
  3. 20x0018secp384r1 (P-384)
  4. 30x0019secp521r1 (P-521)
signature algorithms(8)
  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

Reach — domains contacted

Top 3 of 3. Share is the fraction of this fingerprint’s observations reaching each name.