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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

3786 fingerprints
179 curated
3607 seen live
2032 browsers
186 API clients
602 scanners

Showing all 3786 fingerprints. Page 34 of 38. JSON

Fingerprint Type Tier Class Identified as
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_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.
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_65d7df6850db 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_ea47e43b21a4 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_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_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.
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_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_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_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_ba231424323b 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_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.
t12i1514h2_8daaf6152771_bd367129f6ad 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 live4× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12i4905ht_730fb1b0ac6a_8cd38e60fdc3 JA4 seen live38× 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 live14× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d030900_55b375c5d22e_dce569508a71 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d031000_55b375c5d22e_b5f1502c64c6 JA4 seen live40× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d031100_55b375c5d22e_635104d325f0 JA4 seen live30× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d031100_55b375c5d22e_aeb2b64a872a JA4 seen live104× 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 live38× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d041100_16476d049b0b_73702258a521 JA4 seen live42× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d0411h2_16476d049b0b_a78b9a7aa7a1 JA4 seen live114× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d050500_13f69f63e3fe_1a196bf7ea71 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d050600_13f69f63e3fe_83fe30743d85 JA4 seen live8× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d050600_75d938f10e26_827bd6fd5353 JA4 seen live38× 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.
t13d060600_a150a9413979_827bd6fd5353 JA4 seen live228× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d060600_a6485224f4b1_83fe30743d85 JA4 seen live9× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d060700_a150a9413979_241b3681de17 JA4 seen live14× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d061100_a150a9413979_ce3af45f0a37 JA4 seen live38× 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.
t13d070500_c2f3549b8eb7_1a196bf7ea71 JA4 seen live10× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070600_c2f3549b8eb7_83fe30743d85 JA4 seen live120× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070600_c2f3549b8eb7_aa419bfe26ff JA4 seen live38× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d070600_c2f3549b8eb7_b3482a6e6e3b JA4 seen live27× 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.
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_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 live27× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d101000_61a7ad8aa9b6_815af8d700c8 JA4 seen live5× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d1011h2_61a7ad8aa9b6_3d90412d0a0b JA4 seen live2× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d1011ht_61a7ad8aa9b6_723f4692b966 JA4 seen live17× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d1012ht_61a7ad8aa9b6_3ef862bd26ae JA4 seen live443× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1012ht_61a7ad8aa9b6_b38bd6d0bc9a JA4 seen live1319× 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 live19× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d121100_2fc95311a792_408777b7afc8 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1213ht_a538d02d76d5_768ed6726269 JA4 seen live2238× Unclassified Presented a User-Agent we cannot attribute to a known client.
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_4f01dca9c5c2 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.
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_f0c919a2e8f0 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.
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_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.

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 2026-09-22T08:50:02+00:00. Want to know your own? The Handshake Mirror reports it, along with the rest of your connection.