TLS ClientHello (JA4)

t12d1515h2_8daaf6152771_4d8a99c1bc01

first seen 2026-07-18 08:00 · last seen 2026-09-08 13:37 · JSON

Decomposed attributes

Protocolt (TLS over TCP)
TLS version12
SNId (domain)
Cipher count15
Extension count15
ALPNh2
Ciphers002f, 0035, 009c, 009d, 1301, 1302, 1303, c013, c014, c02b, c02c, c02f, c030, cca8, cca9
Extensions0005, 000a, 000b, 000d, 0012, 0017, 001b, 0023, 002b, 002d, 0033, 4469, ff01
Signature algorithms0403, 0503, 0603, 0804, 0805, 0806, 0401, 0501, 0601, 0203, 0201
JA4_rt12d1515h2_002f,0035,009c,009d,1301,1302,1303,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0012,0017,001b,0023,002b,002d,0033,4469,ff01_0403,0503,0603,0804,0805,0806,0401,0501,0601,0203,0201
JA4_o (sample)t12d1515h2_acb858a92679_e084ef78cf74
JA4_ro (sample)t12d1515h2_1301,1302,1303,c02b,c02f,c02c,c030,cca9,cca8,c013,c014,009c,009d,002f,0035_0000,0017,ff01,000a,000b,0023,0010,0005,000d,0012,0033,002d,002b,001b,4469_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
ge20nn05enus_f649ff7cdbc1_000000000000_0000000000009
ge20nr09zhcn_4886f2cdeb15_000000000000_0000000000002
ge20nr010000_a510e5066512_000000000000_0000000000002
ge20nr08zhcn_429dfdb82413_000000000000_0000000000001
ge20nr09enus_4886f2cdeb15_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;3:1000;4:6291456;5:16384;6:262144|15663105|0|m,a,s,p15

TCP SYN (p0f)

fingerprintco-occurrences
6:48+16:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:03
4:53+11:0:1460:65535,10:mss,sok,ts,nop,ws:df,id+:03
6:54+10:0:8440:mss*7,7:mss,sok,ts,nop,ws:flow:02
6:52+12:0:1404:mss*45,7:mss,sok,ts,nop,ws:flow:02
6:49+15:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:01
6:54+10:0:1440:65535,10:mss,sok,ts,nop,ws:flow:01
6:48+16:0:1432:65535,8:mss,nop,ws,sok,ts:flow:01
4:114+14:0:1452:65535,8:mss,nop,ws,sok,ts:df,id+:01
6:51+13:0:1440:mss*45,9:mss,sok,ts,nop,ws:flow:01

TCP SYN (JA4T)

fingerprintco-occurrences
64800_2-4-8-1-3_1440_74
65535_2-4-8-1-3_1460_103
59080_2-4-8-1-3_8440_72
64800_2-4-8-1-3_1404_72
64800_2-4-8-1-3_1440_91
65535_2-4-8-1-3_1440_101
65535_2-1-3-4-8_1432_81
65535_2-1-3-4-8_1452_81

User-Agent

fingerprintco-occurrences
Adnet-Proxy-Verification/1.09
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.365
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36 Edg/146.0.0.01

Country

fingerprintco-occurrences
US · United States10
CN · China4
HK · Hong Kong SAR China1

Network (ASN)

fingerprintco-occurrences
AS46997 · Black Mesa Corporation4
AS63949 · Akamai Connected Cloud2
AS14061 · DigitalOcean, LLC2
AS132203 · Tencent Building, Kejizhongyi Avenue2
AS45102 · Alibaba (US) Technology Co., Ltd.2
AS4134 · CHINANET BACKBONE2
AS153771 · Heptasky Hong Kong Limited1