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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

6833 fingerprints
179 curated
6654 seen live
4011 browsers
202 API clients
915 scanners

Showing all 6833 fingerprints. Page 57 of 69. JSON

Fingerprint Type Tier Class Identified as
t12d151100_8daaf6152771_ff6acf68a7b1 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_11d1cbdbfd55 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_12b57c03608b JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_139b03624716 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_2dd07853cf44 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_2dfece8704c5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_30ef54c7cff3 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_30f1155c97f6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_35f47bf3fd74 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_569b24623358 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_59523ff55795 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_59b6bdbf70a4 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_6fa7b7c5ab3c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_722609c4e077 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_72b92613dbba JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_7d660fe68177 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_8dd5c141c42c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_a27b3041de30 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_a6fa30fe45ad JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_b337454f6645 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_c072d18c18cf JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_c77bf7e4c030 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_e136dacb97e7 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1511h2_8daaf6152771_f0cac484eba8 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151200_8daaf6152771_1688fab856b5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151200_8daaf6152771_b84cfc1faec6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151200_8daaf6152771_c1d43cf48b3a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151200_8daaf6152771_c8def42c56a9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151200_8daaf6152771_d8edff1af1e6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151200_8daaf6152771_da8ae372f638 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h1_8daaf6152771_68d52e8bc0f3 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_1235052c0395 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_1da37f9aafbb JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_2170f86d61b1 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_271d61939618 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_2fd58e7266c1 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_3d832be87f33 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_4e347bfd433f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_81add266b544 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_854247e86784 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_8b5473f50f9e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_97944220f2ef JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_d2f58b9befeb JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_ebb0d8e3ac2c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1512h2_8daaf6152771_eca08b9a2194 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151300_8daaf6152771_7c17162d57c3 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151300_8daaf6152771_b09642ef1b96 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151300_8daaf6152771_d735600089ac JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151300_8daaf6152771_ee0f559d2348 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_1fc27656785e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_20aa904ea21f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_21a12b38d9f9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_2217b4dc6dd3 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_29b93b360dca JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_2c9b18a1e084 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_3e2fb2398056 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_484bdba34081 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_5c6fb5164846 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_69a0c0890ddc JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_6f5c1e5c2f55 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_7de80710b7f0 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_81a3b5c0dbca JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_861e9dcdcffc JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_a4afb8a89362 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_af2b06b918d2 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_ba3e74145d2d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_d323c33fb431 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1513h2_8daaf6152771_db19c28115c4 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151400_8daaf6152771_422c0872b983 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151400_8daaf6152771_9f86501cadc8 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151400_8daaf6152771_b0e6af452bc4 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151400_8daaf6152771_c3dd6200a952 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d151400_8daaf6152771_c6a9d134343e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_2222be3f10cd JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_22aa0ec41cc5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_2448c53f8442 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_25a14435e36a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_4906fc499ab7 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_49fb45ee539f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_793f6c46d541 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_a9de1a46c76f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_adf959c0ea83 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_b3daed529873 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_bc7d8c526a84 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_e6c9a88f42b5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1514h2_8daaf6152771_f442e4d23ff6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1515h2_8daaf6152771_03a19d5278e6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1515h2_8daaf6152771_09ce68a64ac1 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1515h2_8daaf6152771_0c4b4c30d0dd JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1515h2_8daaf6152771_0d9c62265aa3 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1515h2_8daaf6152771_37a7dc93cc8c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1515h2_8daaf6152771_5e2165e4963a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1515h2_8daaf6152771_6cbde9051cc0 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1515h2_8daaf6152771_7645b50074e1 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1515h2_8daaf6152771_7a7b06fa4164 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1515h2_8daaf6152771_c57922a65c6a JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1515h2_8daaf6152771_f6615d59cd5c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1516h2_8daaf6152771_2d9ee4d0ad3f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d1516h2_8daaf6152771_6ba66e7c09ab JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t12d160800_8cdfa2d4673b_b80abeb657b1 JA4 seen live152× 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 2026-10-07T17:30:04+00:00. Want to know your own? The Handshake Mirror reports it, along with the rest of your connection.