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unrecognised fingerprint

t13d491300_bd868743f55c_8a76144d8b8e

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 ALPN2026-07-19 → 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 39 connections: a deterministic stack. Libraries and command-line clients look like this.
reach
0.291 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

39
observations
3
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 1.3
ALPN (wire order)
—
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(49)
  1. 00x1302TLS_AES_256_GCM_SHA384
  2. 10x1301TLS_AES_128_GCM_SHA256
  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. 70xcca8TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305
  9. 80xc02fTLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
  10. 90x009fTLS_DHE_RSA_WITH_AES_256_GCM_SHA384
  11. 100xccaaTLS_DHE_RSA_WITH_CHACHA20_POLY1305
  12. 110x00a3TLS_DHE_DSS_WITH_AES_256_GCM_SHA384
  13. 120x009eTLS_DHE_RSA_WITH_AES_128_GCM_SHA256
  14. 130x00a2TLS_DHE_DSS_WITH_AES_128_GCM_SHA256
  15. 140xc024TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
  16. 150xc028TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
  17. 160xc023TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
  18. 170xc027TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
  19. 180x006bTLS_DHE_RSA_WITH_AES_256_CBC_SHA256
  20. 190x006aTLS_DHE_DSS_WITH_AES_256_CBC_SHA256
  21. 200x0067TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
  22. 210x0040TLS_DHE_DSS_WITH_AES_128_CBC_SHA256
  23. 220xc02eunknown (0xc02e)
  24. 230xc032unknown (0xc032)
  25. 240xc02dunknown (0xc02d)
  26. 250xc031unknown (0xc031)
  27. 260xc026unknown (0xc026)
  28. 270xc02aunknown (0xc02a)
  29. 280xc025unknown (0xc025)
  30. 290xc029unknown (0xc029)
  31. 300xc00aTLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
  32. 310xc014TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
  33. 320xc009TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
  34. 330xc013TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
  35. 340x0039TLS_DHE_RSA_WITH_AES_256_CBC_SHA
  36. 350x0038TLS_DHE_DSS_WITH_AES_256_CBC_SHA
  37. 360x0033TLS_DHE_RSA_WITH_AES_128_CBC_SHA
  38. 370x0032TLS_DHE_DSS_WITH_AES_128_CBC_SHA
  39. 380xc005unknown (0xc005)
  40. 390xc00funknown (0xc00f)
  41. 400xc004unknown (0xc004)
  42. 410xc00eunknown (0xc00e)
  43. 420x009dTLS_RSA_WITH_AES_256_GCM_SHA384
  44. 430x009cTLS_RSA_WITH_AES_128_GCM_SHA256
  45. 440x003dTLS_RSA_WITH_AES_256_CBC_SHA256
  46. 450x003cTLS_RSA_WITH_AES_128_CBC_SHA256
  47. 460x0035TLS_RSA_WITH_AES_256_CBC_SHA
  48. 470x002fTLS_RSA_WITH_AES_128_CBC_SHA
  49. 480x00ffTLS_EMPTY_RENEGOTIATION_INFO
extensions(13)sorted
  1. 00x0000server_name (SNI)
  2. 10x0005status_request (OCSP)
  3. 20x000asupported_groups
  4. 30x000bec_point_formats
  5. 40x000dsignature_algorithms
  6. 50x0011unknown (0x0011)
  7. 60x0017extended_master_secret
  8. 70x0023session_ticket
  9. 80x0029unknown (0x0029)
  10. 90x002bsupported_versions
  11. 100x002dpsk_key_exchange_modes
  12. 110x0032unknown (0x0032)
  13. 120x0033key_share

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

curves / groups(10)
  1. 00x001dx25519
  2. 10x0017secp256r1 (P-256)
  3. 20x0018secp384r1 (P-384)
  4. 30x0019secp521r1 (P-521)
  5. 40x001ex448
  6. 50x0100ffdhe2048
  7. 60x0101ffdhe3072
  8. 70x0102ffdhe4096
  9. 80x0103ffdhe6144
  10. 90x0104ffdhe8192
signature algorithms(19)
  1. 00x0403ecdsa_secp256r1_sha256
  2. 10x0503ecdsa_secp384r1_sha384
  3. 20x0603ecdsa_secp521r1_sha512
  4. 30x0807ed25519
  5. 40x0808ed448
  6. 50x0804rsa_pss_rsae_sha256
  7. 60x0805rsa_pss_rsae_sha384
  8. 70x0806rsa_pss_rsae_sha512
  9. 80x0809rsa_pss_pss_sha256
  10. 90x080arsa_pss_pss_sha384
  11. 100x080brsa_pss_pss_sha512
  12. 110x0401rsa_pkcs1_sha256
  13. 120x0501rsa_pkcs1_sha384
  14. 130x0601rsa_pkcs1_sha512
  15. 140x0402rsa_pkcs1_sha384
  16. 150x0203ecdsa_sha1
  17. 160x0201rsa_pkcs1_sha1
  18. 170x0202unknown (0x0202)
  19. 180x0101unknown (0x0101)

Reach — domains contacted

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