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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

6830 fingerprints
179 curated
6651 seen live
4009 browsers
202 API clients
914 scanners

Showing all 6830 fingerprints. Page 64 of 69. JSON

Fingerprint Type Tier Class Identified as
t13d1512h2_8daaf6152771_5a415f903d87 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_69246b9177b2 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_6d26050cdaea JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_6fbe34c1acfd JA4 seen live1× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d1512h2_8daaf6152771_7fb00e9fe513 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_804c960ca71a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_8440df823685 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_9935525ff374 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_a19a424f63ee JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_a5de9422fa47 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_a71492b5696b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_aee53cadf675 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_bb441081aa5e JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_bd45082d1033 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_be227514bd13 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_c01db1d521db JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_c0fd8175705a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_c7baa7822bb8 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_cb08d5a7b0e5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_d930c2e1b39e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_e6e29218be51 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_f25f363ac0af JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_f428ebd3c10f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_f65758e190dc JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1512h2_8daaf6152771_f66a660c0717 JA4 seen live1× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d151300_8daaf6152771_01328193b9a6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151300_8daaf6152771_0a4375ee5e06 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151300_8daaf6152771_0d655e8d227e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151300_8daaf6152771_37fcc8874765 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151300_8daaf6152771_43ff45d779ab JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151300_8daaf6152771_57714f41eb6a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151300_8daaf6152771_62849d7b598e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151300_8daaf6152771_674734105b11 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151300_8daaf6152771_8bb3bd8e047d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h1_8daaf6152771_53c10a979e33 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_00d42c2875f9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_068cde9bf35a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_0a5575733548 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_10d1ef184d7a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_122f37b7d0da JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_1f15a2f366ce JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_1f80e2ffbb11 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_21993be0489e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_2230ef5936ce JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_2a8c770be80b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_2ad79bace647 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_2bc18b8a38f2 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_2ffb8507abbc JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_31b45bfc656d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_3e6a6200e4fc JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_3ec8dad22576 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_3fc315e4bc1c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_476f68342dd8 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_4c655465a530 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_53c10a979e33 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_5486a096c1ff JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_5c9fde24ac23 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_5d1f5ba895ca JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_6eceb7bc6142 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_721588076027 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_872b9934ebb9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_8a0e6fd4ad7e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_9420bc7b8960 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_94e6b60455fb JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_a3828233643d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_a48629524374 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_a6618a8735e6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_abf3d86cf300 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_afc567c59ad3 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_bb01b04abb11 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_bb1c65e6d82f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_c4af766dfd46 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_cd3755d40a5b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_d244ae6727c6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_d8c832cb6800 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_e2c5acc2f924 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_e99adb098657 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_f506c3f3b897 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_fcefb0f2f38d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151400_8daaf6152771_084528d10652 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151400_8daaf6152771_149dc003db50 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151400_8daaf6152771_1c6ca80a981f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151400_8daaf6152771_5236248dd448 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151400_8daaf6152771_590ae4078159 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151400_8daaf6152771_b3e6a62c5873 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151400_8daaf6152771_b9099a179302 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151400_8daaf6152771_bcc0eb56b5e7 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151400_8daaf6152771_da48514c4592 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151400_8daaf6152771_dc122331f557 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151400_8daaf6152771_de3031f27d8b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151400_8daaf6152771_f77074818dd4 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_00bedd1f76ff JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_019d7df28e7a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_0b92f9e8525e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_0d29295bbda6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_0d4f88983ce4 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_13faa61246a3 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_149bbda496cb JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_1d574a431466 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_1de850e75304 JA4 seen live1× 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 2026-10-07T15:20:03+00:00. Want to know your own? The Handshake Mirror reports it, along with the rest of your connection.