TLS ClientHello (JA4)

t13d1211h2_8916083b16ab_b11bb3600f94

first seen 2026-08-18 07:40 · last seen 2026-09-25 20:38 · JSON

Decomposed attributes

Protocol	`t (TLS over TCP)`
TLS version	`13`
SNI	`d (domain)`
Cipher count	`12`
Extension count	`11`
ALPN	`h2`
Ciphers	`002f, 009d, 1301, 1302, 1303, c013, c014, c02b, c02c, c02f, cca8, cca9`
Extensions	`000a, 000b, 000d, 0015, 0017, 002b, 002d, 0033, ff01`
Signature algorithms	`0403, 0804, 0401, 0503, 0805, 0501, 0806, 0601`
JA4_r	`t13d1211h2_002f,009d,1301,1302,1303,c013,c014,c02b,c02c,c02f,cca8,cca9_000a,000b,000d,0015,0017,002b,002d,0033,ff01_0403,0804,0401,0503,0805,0501,0806,0601`
JA4_o (sample)	`t13d1211h2_fb801578640a_8ed10a38a5d2`
JA4_ro (sample)	`t13d1211h2_1301,1302,1303,002f,c013,c02b,c02f,c02c,c014,009d,cca9,cca8_002b,0000,0010,002d,000b,0033,ff01,000a,000d,0017,0015_0403,0804,0401,0503,0805,0501,0806,0601`

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)

fingerprint	co-occurrences
`ge20nn04enus_989c7cc05c9b_000000000000_000000000000`	6

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`1:65536;2:0;4:6291456;6:262144;4:1048576\|15663105\|1:0:0:256\|m,a,s,p`	6

TCP SYN (p0f)

fingerprint	co-occurrences
`4:46+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:55+9:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:52+12:0:1400:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:54+10:0:1460:32768,10:mss,nop,ws,sok,ts::0`	1
`4:52+12:0:8960:mss*7,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:48+16:0:1460:mss*44,9:mss,nop,nop,sok,nop,ws:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`64240_2-4-8-1-3_1460_7`	2
`64240_2-4-8-1-3_1400_7`	1
`62720_2-4-8-1-3_8960_7`	1
`64240_2-1-1-4-1-3_1460_9`	1
`32768_2-1-3-4-8_1460_10`	1

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.9 Safari/537.36`	6

Country

fingerprint	co-occurrences
`SE` · Sweden	2
`NL` · Netherlands	1
`CH` · Switzerland	1
`FR` · France	1
`AT` · Austria	1

Network (ASN)

fingerprint	co-occurrences
`AS198093` · Foreningen for digitala fri- och rattigheter	2
`AS53667` · FranTech Solutions	1
`AS215125` · Church of Cyberology	1
`AS208323` · Foundation for Applied Privacy	1
`AS213873` · OUIDO Hosting	1