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⟨ QUANTUM ERROR PORTAL ⟩

Navigate the Error Dimensions

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JA4 Fingerprint Directory

What this edge classifies traffic against, plus what it actually sees — decoded and named, not just listed

6832 fingerprints
179 curated
6653 seen live
4010 browsers
202 API clients
915 scanners

Showing all 6832 fingerprints. Page 60 of 69. JSON

Fingerprint Type Tier Class Identified as
t12i1508h2_8daaf6152771_6b60287f541d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_6cc87a9df605 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_7027c4f4131a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_75d1f9c55191 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_7aac7e436890 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_960578f014b5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_9b566607c4f6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_a0711822b781 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_a1d79d390f9f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_ad4e5ebcc3e0 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_afb4dcb7f981 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_d57df442efa3 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_d8c55735d155 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_eac087866b28 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_f1a111b46443 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_f2f9bc6a6b49 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1508h2_8daaf6152771_f4ef2db0f9ee JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h1_8daaf6152771_4ddd4d84542c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_0de19ea910aa JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_0faf7d3e4c5a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_11b3671e67a5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_1849556a3e6a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_31c443769eb5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_61b428ce7a46 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_64279d7341cc JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_65d7df6850db JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_6d1b2207b01c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_70eb9d457524 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_81b23e1cfe8b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_8720c114d136 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_baf35259f0a3 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_bd11714b9262 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_c9ac86013c8a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_e72a096aeedc JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_e760ec0b3a69 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1509h2_8daaf6152771_ea47e43b21a4 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h1_8daaf6152771_b65bc14d537d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_0f1c0d585a59 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_1adffa8f8dd6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_3fe0579d3ed7 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_55f57fe9406a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_8b729da37de9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_8d28cf51bedc JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_980bfa27ccb2 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_ae700b083824 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_b8465e333ec7 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_b9ac5e6308c2 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_c094ecaabaea JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_d7ec8b2f1aa4 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_dfd4d69e6341 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_e0f54a189e7d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_eb82186874a9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_f386194d7ef6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1510h2_8daaf6152771_f922a566b475 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_0968e040be30 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_320e343aa6dc JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_52a5af5f622d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_55869acab536 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_5b88218b99ac JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_63e75f0e92ac JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_6581f3800b87 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_6801fe325ac5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_79cfec709a48 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_7be8703dfe02 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_7f120964cd27 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_8934c96212b8 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_8bfd182cf565 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_af22d0c84162 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_cfcd491eb659 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_d70f2e40ee3b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1511h2_8daaf6152771_f185fa46ae68 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1512h2_8daaf6152771_67a5bdf8c29a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1512h2_8daaf6152771_73bb0cafcabc JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1512h2_8daaf6152771_8423e8b48f42 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1512h2_8daaf6152771_96935d829e54 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1512h2_8daaf6152771_aa634d860130 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1512h2_8daaf6152771_b964f4d6f061 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1512h2_8daaf6152771_ba231424323b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1512h2_8daaf6152771_bdae94000642 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1512h2_8daaf6152771_c3b22e90674a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1512h2_8daaf6152771_cfdf6605d3a5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1513h2_8daaf6152771_21d4bdf9bf46 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1513h2_8daaf6152771_235c36c1b92e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1513h2_8daaf6152771_451efbc968e6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1513h2_8daaf6152771_46542c49e17c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1513h2_8daaf6152771_8c32e6731cf9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1513h2_8daaf6152771_a4c022edbcae JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1513h2_8daaf6152771_cfc5794f8f3d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1513h2_8daaf6152771_fc34bed59d22 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1514h2_8daaf6152771_bd367129f6ad JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i1515h2_8daaf6152771_5873aad116a0 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i2108ht_76e208dd3e22_09f609c8facd JA4 seen live7× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i4905ht_730fb1b0ac6a_8cd38e60fdc3 JA4 seen live75× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d000500_e3b0c44298fc_7f4491e7bc3b JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d010500_a21e9f97bdf3_7f4491e7bc3b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d010600_a21e9f97bdf3_ec5015a3aa28 JA4 seen live15× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d0107h2_019185d5a21d_e2515e582fb5 JA4 seen live206× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d0107h2_0f2cb44170f4_e2515e582fb5 JA4 seen live206× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d0107h2_58070c528ac8_e2515e582fb5 JA4 seen live399× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d0107h2_8ecb5bcd8cd8_e2515e582fb5 JA4 seen live206× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.

JA3 and JA4, and why the difference matters here

A TLS fingerprint identifies a client by how it is built, not by anything it claims. The cipher suites it offers, the extensions it sends, the order they appear in — all of that is decided by the TLS library and its configuration, and none of it is affected by changing a User-Agent string.

JA3 hashes the whole ClientHello into one MD5. It works, but it throws away every bit of structure: two fingerprints that differ by one cipher look no more related than two from unrelated software.

JA4 keeps the structure. The first component is plain text you can read without a lookup table — transport, TLS version, whether a server name was sent, how many ciphers and extensions, which ALPN. The second and third hash the ciphers and the extensions separately. That separation is what lets this directory group a scanner's twelve fingerprints into one family, because they share an extension hash while their cipher hashes differ.

How this database is used

It is not a reference list. The proxy loads it at startup and consults it on every TLS handshake, matching JA4 first and falling back to JA3, and the classification it returns feeds blocking, rate limiting and per-route allowlists. Two further checks run alongside it:

Replay detection flags one fingerprint appearing from many addresses inside a window — a single client build spread across a botnet. Drift detection flags a fingerprint whose cipher or extension composition changes while its hash stays put, which is the signature of something trying to wear another client's identity.

Directory generated 2026-10-07T16:50:03+00:00. Want to know your own? The Handshake Mirror reports it, along with the rest of your connection.