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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

3778 fingerprints
179 curated
3599 seen live
2029 browsers
186 API clients
601 scanners

Showing all 3778 fingerprints. Page 36 of 38. JSON

Fingerprint Type Tier Class Identified as
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_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_abf3d86cf300 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513h2_8daaf6152771_c4af7d3108f3 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_e99adb098657 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513ht_8daaf6152771_61f45fc2c1c9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513ht_8daaf6152771_b20fa589102b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513ht_8daaf6152771_c11b6b55509d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1513ht_8daaf6152771_cb4983541e2c 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_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_de3031f27d8b 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_1de850e75304 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_215ce841d4c9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_23ba5db65186 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_35f54e0b1a82 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_4f3cc336e3ee JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_5156df582fb1 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_603ccdb91e3a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_62a27464bde7 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_64e6dc6d1f26 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_71a288ae58df JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_7f1550c5568a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_810a15a332c1 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_836cd95ea05e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_8468d7ade12c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_865757d90d4e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_87766c1a4490 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_8bafa0803767 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_8be788a27918 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_8f1a84465d36 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_99e3259a919e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_9f508d7910ef JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_afe36b7eeadd JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_bffd00849e05 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_cb1e12ca09f6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_cebf58402f4f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_d0956fc89721 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_d1ba522d23d4 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_d34fad65fa15 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_de538a954cf5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_deb1cd3d2020 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_ed8858f9260b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_fea9d9e3b931 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1514h2_8daaf6152771_ff51abce5dce JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151500_8daaf6152771_09c52da4402a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151500_8daaf6152771_3ea848142ccb JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151500_8daaf6152771_730db0fdce76 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151500_8daaf6152771_8b387726ad91 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151500_8daaf6152771_8deda503e862 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_04db9f4cbeef JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_06d0a3ff5c2c JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_104436a1aaef JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_171db593f1f5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_2b66d956728c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_3241686c8acb JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_32f48254f361 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_61c29ddb3825 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_63b09f26f246 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_7bfca9a91c1b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_824e585b2b31 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_8e6441488796 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_91e7438793ab JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_968165097b0e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_9c9bbf113d65 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_a54f389dc709 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_a80335266c50 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_ac9cb79ee855 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_b97abf3585a2 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_bbebbf6fcd10 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_cb5aba928501 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_e0cddad42026 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_f6d0a1d840c6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_f7e764339e63 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_fe64589bb50b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1515h2_8daaf6152771_ff5ce3736216 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151600_8daaf6152771_71c124bd0b40 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151600_8daaf6152771_bf8d9114bb09 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151600_8daaf6152771_c0c477cde423 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d151600_8daaf6152771_d9d40f4a71d6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_0840309269b6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_0c586802a5fa JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_12b110271bcc JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_14256baa9601 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_27b64e10e4de JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_49b3eecc765b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_6a83e66a3bc9 JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_9338e1cc4b02 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_9bfd97c2868e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_9e3709048d71 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 2026-09-22T07:50:02+00:00. Want to know your own? The Handshake Mirror reports it, along with the rest of your connection.