TLS ClientHello (JA4)

t12d1814h2_29a2cd9e9f10_d267a5f792d4

first seen 2026-06-29 23:11 · last seen 2026-06-29 23:11 · JSON

Decomposed attributes

Protocolt (TLS over TCP)
TLS version12
SNId (domain)
Cipher count18
Extension count14
ALPNh2
Ciphers000a, 002f, 0033, 0035, 0039, 1301, 1302, 1303, c009, c00a, c013, c014, c02b, c02c, c02f, c030, cca8, cca9
Extensions0005, 000a, 000b, 000d, 0015, 0017, 001c, 0023, 002b, 002d, 0033, ff01
Signature algorithms0403, 0503, 0603, 0804, 0805, 0806, 0401, 0501, 0601, 0203, 0201
JA4_rt12d1814h2_000a,002f,0033,0035,0039,1301,1302,1303,c009,c00a,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0015,0017,001c,0023,002b,002d,0033,ff01_0403,0503,0603,0804,0805,0806,0401,0501,0601,0203,0201
JA4_o (sample)t12d1814h2_2284be7361e5_05c2ba565d2b
JA4_ro (sample)t12d1814h2_1301,1303,1302,c02b,c02f,cca9,cca8,c02c,c030,c00a,c009,c013,c014,0033,0039,002f,0035,000a_0000,0017,ff01,000a,000b,0023,0010,0005,0033,002b,000d,002d,001c,0015_0403,0503,0603,0804,0805,0806,0401,0501,0601,0203,0201

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
ge20nn020000_ac270bc2c19a_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;4:131072;5:16384|12517377|3:0:0:201,5:0:0:101,7:0:0:1,9:0:7:1,11:0:3:1,13:0:0:241|m,p,a,s1

TCP SYN (p0f)

fingerprintco-occurrences
4:47+17:0:1460:mss*44,11:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_111

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Firefox/128.01

Country

fingerprintco-occurrences
DE · Germany1

Network (ASN)

fingerprintco-occurrences
AS24940 · Hetzner Online GmbH1