TLS ClientHello (JA4)

t13i170900_5b57614c22b0_78e6aca7449b

first seen 2026-06-11 04:20 · last seen 2026-09-15 21:45 · JSON

Last 7 days (36 observations)

Distinct clients per day (last 30 days, peak 5/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

Protocol	`t (TLS over TCP)`
TLS version	`13`
SNI	`i (no SNI / IP)`
Cipher count	`17`
Extension count	`9`
ALPN	`00`
Ciphers	`002f, 0035, 009c, 009d, 1301, 1302, 1303, c009, c00a, c013, c014, c02b, c02c, c02f, c030, cca8, cca9`
Extensions	`000a, 000b, 000d, 0017, 0023, 002b, 002d, 0033, ff01`
Signature algorithms	`0403, 0804, 0401, 0503, 0805, 0501, 0806, 0601, 0201`
JA4_r	`t13i170900_002f,0035,009c,009d,1301,1302,1303,c009,c00a,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_000a,000b,000d,0017,0023,002b,002d,0033,ff01_0403,0804,0401,0503,0805,0501,0806,0601,0201`
JA4_o (sample)	`t13i170900_bbc337f0a232_ca0042101dff`
JA4_ro (sample)	`t13i170900_1301,1302,1303,c02b,c02f,c02c,c030,cca9,cca8,c009,c013,c00a,c014,009c,009d,002f,0035_0017,ff01,000a,000b,0023,000d,0033,002d,002b_0403,0804,0401,0503,0805,0501,0806,0601,0201`

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)

fingerprint	co-occurrences
`ge11nn070000_d0d63ed74832_000000000000_000000000000`	31
`ge11nn050000_c71bbc472f37_000000000000_000000000000`	29
`po11nn060000_8c1b2e3f6532_000000000000_000000000000`	10
`ge11nn070000_f395b2c4bb38_000000000000_000000000000`	10
`ge11nn050000_e81ae831f766_000000000000_000000000000`	10
`ge11nn070000_07b5c846fda8_000000000000_000000000000`	8
`ge11nn050000_0c34b9a6def6_000000000000_000000000000`	8
`ge11nn070000_ca40d4d1460e_000000000000_000000000000`	8
`ge11nn050000_889622e8388c_000000000000_000000000000`	7
`ge11nn070000_f1c095c421c4_000000000000_000000000000`	6

TCP SYN (p0f)

fingerprint	co-occurrences
`4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	12
`4:48+16:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	11
`4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	9
`4:54+10:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	9
`4:43+21:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	9
`4:53+11:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	8
`4:46+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	8
`4:50+14:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	6
`4:49+15:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	5
`4:41+23:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	5

TCP SYN (JA4T)

fingerprint	co-occurrences
`64240_2-4-8-1-3_1460_7`	92
`29200_2-4-8-1-3_1460_7`	8
`32120_2-4-8-1-3_1460_7`	6
`64240_2-4-8-1-3_1424_7`	6
`64952_2-4-8-1-3_1412_7`	6
`64240_2-4-8-1-3_1460_10`	4
`65280_2-4-8-1-3_1360_7`	4
`29200_2-4-8-1-3_1400_7`	4
`64240_2-4-8-1-3_1436_7`	2
`64240_2-4-8-1-3_1380_7`	2

User-Agent

fingerprint	co-occurrences
`libredtail-http`	160
`Custom-AsyncHttpClient`	6

Country

fingerprint	co-occurrences
`US` · United States	35
`VN` · Vietnam	14
`PK` · Pakistan	13
`SG` · Singapore	12
`CN` · China	10
`ID` · Indonesia	9
`TH` · Thailand	9
`FR` · France	7
`HK` · Hong Kong SAR China	6
`DE` · Germany	5

Network (ASN)

fingerprint	co-occurrences
`AS45102` · Alibaba (US) Technology Co., Ltd.	18
`AS59257` · CMPak Limited	11
`AS150862` · VPSTTT COMPUTER COMPANY LIMITED	8
`AS51167` · Contabo GmbH	7
`AS45090` · Shenzhen Tencent Computer Systems Company Limited	6
`AS135377` · UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED	6
`AS174` · Cogent Communications, LLC	6
`AS36352` · HostPapa	6
`AS9009` · M247 Europe SRL	4
`AS53667` · FranTech Solutions	4