TLS ClientHello (JA4)

t12d2808h1_d943125447b4_31a554a9d3e9

first seen 2026-10-13 17:54 · last seen 2026-10-13 17:54 · JSON

Distinct clients per day (last 30 days, peak 1/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

Protocolt (TLS over TCP)
TLS version12
SNId (domain)
Cipher count28
Extension count8
ALPNh1
Ciphers002f, 0033, 0035, 0039, 003c, 003d, 0067, 006b, 009c, 009d, 009e, 009f, 00ff, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030, cca8, cca9, ccaa
Extensions0005, 000a, 000b, 000d, 0017, 0023
Signature algorithms0601, 0602, 0603, 0501, 0502, 0503, 0401, 0402, 0403, 0301, 0302, 0303, 0201, 0202, 0203
JA4_rt12d2808h1_002f,0033,0035,0039,003c,003d,0067,006b,009c,009d,009e,009f,00ff,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030,cca8,cca9,ccaa_0005,000a,000b,000d,0017,0023_0601,0602,0603,0501,0502,0503,0401,0402,0403,0301,0302,0303,0201,0202,0203
JA4_o (sample)t12d2808h1_fb9300bf4368_d538458b0a7e
JA4_ro (sample)t12d2808h1_c02c,c030,009f,cca9,cca8,ccaa,c02b,c02f,009e,c024,c028,006b,c023,c027,0067,c00a,c014,0039,c009,c013,0033,009d,009c,003d,003c,0035,002f,00ff_0000,000b,000a,0023,0005,0010,0017,000d_0601,0602,0603,0501,0502,0503,0401,0402,0403,0301,0302,0303,0201,0202,0203

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr06enus_a89d28968959_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:114+14:0:1440:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1440_81

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:157.0) Gecko/20100101 Firefox/157.01

Country

fingerprintco-occurrences
RU · Russia1

Network (ASN)

fingerprintco-occurrences
AS39028 · JSC ER-Telecom Holding1