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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 61 of 69. JSON

Fingerprint Type Tier Class Identified as
t13d0107h2_ee47968ec53b_e2515e582fb5 JA4 seen live207× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d011000_ee47968ec53b_b3d208934f58 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d011100_0f2cb44170f4_aeb2b64a872a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d011100_58070c528ac8_aeb2b64a872a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d011100_ee47968ec53b_aeb2b64a872a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d0207h2_fffbd61365f3_e2515e582fb5 JA4 seen live194× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d0307h2_55b375c5d22e_2b813b6b2cb5 JA4 seen live3× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d030900_55b375c5d22e_3fb7e35edb64 JA4 seen live22× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d030900_55b375c5d22e_dce569508a71 JA4 seen live6× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d031000_55b375c5d22e_b5f1502c64c6 JA4 seen live44× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d031000_55b375c5d22e_c99e22d5336f JA4 seen live5× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d031000_5d5efb78cdb0_b5f1502c64c6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d031100_55b375c5d22e_635104d325f0 JA4 seen live45× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d031100_55b375c5d22e_6f9e2867e4b9 JA4 seen live194× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d031100_55b375c5d22e_aeb2b64a872a JA4 seen live119× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d0312h2_55b375c5d22e_16d5fd281d0e JA4 seen live100× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d040600_f03b13587ee1_827bd6fd5353 JA4 seen live57× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d041000_ed60d9558351_b5f1502c64c6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d041100_16476d049b0b_73702258a521 JA4 seen live63× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d0411h2_16476d049b0b_a78b9a7aa7a1 JA4 seen live171× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d050600_13f69f63e3fe_83fe30743d85 JA4 seen live26× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d050600_75d938f10e26_827bd6fd5353 JA4 seen live57× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d050700_fe8b0b18143e_2f3d4148c47a JA4 seen live46× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d051000_d55e91d5c3b2_cc96517400c0 JA4 seen live3× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d051000_fe8b0b18143e_b5f1502c64c6 JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d060500_a6485224f4b1_7f4491e7bc3b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d060600_a150a9413979_827bd6fd5353 JA4 seen live357× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d060600_a6485224f4b1_83fe30743d85 JA4 seen live21× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d060700_a150a9413979_241b3681de17 JA4 seen live27× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d061100_a150a9413979_ce3af45f0a37 JA4 seen live57× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d061100_da75d768228b_408777b7afc8 JA4 seen live4× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070400_c2f3549b8eb7_d8799e1c6a2a JA4 seen live4× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070500_c2f3549b8eb7_7f4491e7bc3b JA4 seen live13× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070600_c2f3549b8eb7_4043a812f115 JA4 seen live12× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070600_c2f3549b8eb7_83fe30743d85 JA4 seen live241× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070600_c2f3549b8eb7_b3482a6e6e3b JA4 seen live63× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070600_c2f3549b8eb7_ec5015a3aa28 JA4 seen live71× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070700_c2f3549b8eb7_042c22f55c40 JA4 seen live3× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070700_c2f3549b8eb7_41917e49ace6 JA4 seen live8× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070700_c2f3549b8eb7_789c7f32381e JA4 seen live8× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070700_c2f3549b8eb7_78f1cb93ff72 JA4 seen live9× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070700_c2f3549b8eb7_f704dab46ad1 JA4 seen live107× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d0707h2_c2f3549b8eb7_e2515e582fb5 JA4 seen live13840× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070800_c2f3549b8eb7_f9f33d96b593 JA4 seen live8× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070900_c2f3549b8eb7_94c5e2e22320 JA4 seen live3× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070900_c2f3549b8eb7_bf114986101a JA4 seen live2823× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d080500_9a5205a0092a_7f4491e7bc3b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d080600_9a5205a0092a_ec5015a3aa28 JA4 seen live8× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d090900_f91f431d341e_543460421724 JA4 seen live43× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d091000_f91f431d341e_0e0b92dd4b31 JA4 seen live7× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d091000_f91f431d341e_978abd8b448c JA4 seen live69× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d091000_f91f431d341e_f6d7ce0f4a3c JA4 seen live80× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d0911h1_f91f431d341e_fe5d0254026e JA4 seen live121× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1010h1_61a7ad8aa9b6_9984e387be52 JA4 seen live1× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d1011h2_61a7ad8aa9b6_3d90412d0a0b JA4 seen live26× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d1012h1_61a7ad8aa9b6_5461484b2bee JA4 seen live108× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1012h1_61a7ad8aa9b6_8f8fab9fb325 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d111300_c5d436628c5c_d0a5066ca47b JA4 seen live1× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d1115h2_c5d436628c5c_9d2f91cd20f0 JA4 seen live52× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d121100_2fc95311a792_408777b7afc8 JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1213ht_a538d02d76d5_768ed6726269 JA4 seen live2388× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d130600_f6a34bea2645_910bb7675965 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d130900_be732f438736_53d4e768415e JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1311h2_a44d0ee8b3cc_480c14b18160 JA4 seen live2× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d1312h2_f57a46bbacb6_a986e7d46cbf JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1314h2_f57a46bbacb6_80a565061df8 JA4 seen live1× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d1410h2_f98f5dc5c741_ee7d08cce510 JA4 seen live5× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150400_8daaf6152771_3bd6c5ce4416 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150400_8daaf6152771_4c3dd6207bcf JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150500_8daaf6152771_1bb5de40f69a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150500_8daaf6152771_391ba1f0e679 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150500_8daaf6152771_5e21bc867bec JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150500_8daaf6152771_6057223aca2e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150500_8daaf6152771_a5981f5ff601 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150500_8daaf6152771_aa7ad8ad0bef JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150500_8daaf6152771_ffa773eb06e4 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1505h2_8daaf6152771_7cf1c60686f3 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150600_8daaf6152771_411f8ac64ede JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150600_8daaf6152771_58b6c6ce6ae2 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150600_8daaf6152771_688629f82b44 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150600_8daaf6152771_76c7973ea616 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150600_8daaf6152771_7fbae1976b3c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150600_8daaf6152771_94a2796ae212 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150600_8daaf6152771_d56370aaf737 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150600_8daaf6152771_d88e2aa8351a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150600_8daaf6152771_ddc3546c1667 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150600_8daaf6152771_fc0dbf8bd3da JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1506h2_8daaf6152771_7a3cf4f1c66e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1506h2_8daaf6152771_a9e04bb141e9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1506h2_8daaf6152771_b8c5baf5bfc8 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150700_8daaf6152771_268c334f7201 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150700_8daaf6152771_36825d3488d7 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150700_8daaf6152771_423a721297e2 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150700_8daaf6152771_6c17e5da15d3 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150700_8daaf6152771_b0ca107e30de JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150700_8daaf6152771_ba26d0319553 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150700_8daaf6152771_c56da6ed1177 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150700_8daaf6152771_d392a8dd072a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150700_8daaf6152771_dc3a3a0b5a7f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d150700_8daaf6152771_e05705feb738 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 2026-10-07T16:00:03+00:00. Want to know your own? The Handshake Mirror reports it, along with the rest of your connection.