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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

6829 fingerprints
179 curated
6650 seen live
4009 browsers
202 API clients
914 scanners

Showing all 6829 fingerprints. Page 66 of 69. JSON

Fingerprint Type Tier Class Identified as
t13d1515h2_8daaf6152771_fee7349fb889 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_adb48eee9fdd 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 live2× 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_18202f497713 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_1bc2137c6720 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_23c0c426964a 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 live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_479e70ed1a91 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_702a8e37e392 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_757e7cbf1563 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_841ced489e53 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_8eab51d747d1 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_8f97fa7637ac JA4 seen live1× 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.
t13d1516h2_8daaf6152771_a13c1e3390d8 JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_a48c93702c46 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_a4aaaa739397 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_aa65eb61695f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_b204b28ef744 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_b3d3ac4dbbfd JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_d109364f852d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1516h2_8daaf6152771_eb3f4f7706fd JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1517h2_8daaf6152771_15cadc52a526 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1517h2_8daaf6152771_18cb75aa8097 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1517h2_8daaf6152771_29e459b1510e JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1517h2_8daaf6152771_3840b61cd663 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1517h2_8daaf6152771_4cb6c97dc859 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1517h2_8daaf6152771_60dbb3a1db10 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1517h2_8daaf6152771_836209a337de JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1517h2_8daaf6152771_929279cec7b9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1517h2_8daaf6152771_cf425ff07b50 JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1517h2_8daaf6152771_e7f01c9c10c3 JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1518h2_8daaf6152771_a41cfd0d7ccb JA4 seen live4× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1519h2_8daaf6152771_b1f7e646b769 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1610h2_46e7e9700bed_34c01d0633e5 JA4 seen live342× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d161200_ab7c39c05d37_c2e98932a8c7 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1612h2_bd0db5e96f7f_a96f78ab38f2 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1613h2_1711a4c0508c_d9f1b18a60e3 JA4 seen live6× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1613h2_381e52ff873f_6067a83c28d3 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1613h2_8b7ed0b7403b_277dd3cf83a4 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1614h2_9e7ea7ef26e6_5e84a08b8441 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d171000_5b57614c22b0_56fbe12fd207 JA4 seen live8× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d171100_5b57614c22b0_6b891f5cadd1 JA4 seen live8× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d1713h2_6c438ad0f6f9_4291a918cdf1 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1713ht_5b57614c22b0_73c8ae8dda93 JA4 seen live29× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d1714h1_ab0a1bf427ad_ed8524ea7a97 JA4 seen live3× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d1810h2_29a2cd9e9f10_4a1f08c76dc1 JA4 seen live57× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1810h2_b672a73b9056_50fe97754b19 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1812h2_2b16edd4e08c_98a1ca769b00 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1813h2_b672a73b9056_5426470b89c9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1814h2_29a2cd9e9f10_84f228ded5bd JA4 seen live11× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1814h2_f408b8ac563e_e1cce271c5f5 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1815h2_9c6c53ab7e3e_5c81a89c5e8e JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d191100_0682645293b3_665d9ee1cc2f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1911h2_11bd188f2ca6_bf209d6362ca JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d1913h2_81b38ba04ab7_661bee32bcd9 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d2011h2_d71cdf2c13a7_70bf55093985 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d2014h2_a09f3c656075_cbe3c5c47ebd JA4 seen live1× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d2015h2_17e9a8af7860_380c79957f8f JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d210800_bb0fcf8f19ae_565c6736bc0c JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d2111h2_27eb464290be_7e6ea3086605 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d211200_cbb8954facf6_8a58e916c4e1 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d2112h2_ec0dba2c1a22_6fccd2e4d827 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d2113h2_84d092389717_687dbf40044d JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d2212h2_231e334592e8_ce35c396a636 JA4 seen live7× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d2309h2_bc6434d430c8_2977e3beeb43 JA4 seen live123× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d2410h2_d7cd690ac7b2_4e19d925c509 JA4 seen live16× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d241100_df98b6d6dfe4_5e24af367e18 JA4 seen live5× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d251100_b78ed14e2fd0_4ecd95ca9718 JA4 seen live20× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d2610h2_2802a3db6c62_af16a61e292d JA4 seen live114× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d291200_dc38afafcfec_55ac72f97122 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d2912h2_723694b0fccc_62e135c949f9 JA4 seen live3× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d291300_723694b0fccc_610fde5e45f0 JA4 seen live5× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d2914h2_723694b0fccc_eb2f5f0023c9 JA4 seen live2× Unclassified Presented a User-Agent we cannot attribute to a known client.
t13d301000_1d37bd780c83_f6ff4d51d997 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d301100_128a2ad15645_dd22a05640e6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d301100_1d37bd780c83_270ffd6f0af9 JA4 seen live7× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d301100_1d37bd780c83_61f00507a320 JA4 seen live4× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d301300_1d37bd780c83_d0a5066ca47b JA4 seen live7616× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d3013h2_1d37bd780c83_f823e3592142 JA4 seen live3× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d3014h2_1d37bd780c83_17ac7a7984ce JA4 seen live2187× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d310700_e8f1e7e78f70_9b05390bb1b0 JA4 seen live57× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d310900_e8f1e7e78f70_47d8a05ee563 JA4 seen live2× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d3109h1_e8f1e7e78f70_34f3f84e03b6 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d311000_1d947a95fc68_3d8249404ed1 JA4 seen live1× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d311100_e8f1e7e78f70_dd22a05640e6 JA4 seen live13× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d311200_e8f1e7e78f70_47129f976243 JA4 seen live13× Unclassified Completed a TLS handshake but never an HTTP request, so no User-Agent was ever presented.
t13d311200_e8f1e7e78f70_8f5ca734410c JA4 seen live8× Unclassified Presented a User-Agent we cannot attribute to a known client.

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 2026-10-07T14:30:03+00:00. Want to know your own? The Handshake Mirror reports it, along with the rest of your connection.