TLS ClientHello (JA4)

t12d430700_1ce71f0edbb1_269097225c9f

first seen 2026-06-17 15:34 · last seen 2026-09-15 12:39 · JSON

Last 7 days (1 observations)

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 count43
Extension count7
ALPN00
Ciphers002f, 0032, 0033, 0035, 0038, 0039, 003c, 003d, 0040, 0067, 006a, 006b, 009c, 009d, 009e, 009f, 00a2, 00a3, 00ff, c004, c005, c009, c00a, c00e, c00f, c013, c014, c023, c024, c025, c026, c027, c028, c029, c02a, c02b, c02c, c02d, c02e, c02f, c030, c031, c032
Extensions000a, 000b, 000d, 0017, 002b, 0032
Signature algorithms0403, 0503, 0603, 0804, 0805, 0806, 0809, 080a, 080b, 0401, 0501, 0601, 0402, 0303, 0301, 0302, 0203, 0201, 0202
JA4_rt12d430700_002f,0032,0033,0035,0038,0039,003c,003d,0040,0067,006a,006b,009c,009d,009e,009f,00a2,00a3,00ff,c004,c005,c009,c00a,c00e,c00f,c013,c014,c023,c024,c025,c026,c027,c028,c029,c02a,c02b,c02c,c02d,c02e,c02f,c030,c031,c032_000a,000b,000d,0017,002b,0032_0403,0503,0603,0804,0805,0806,0809,080a,080b,0401,0501,0601,0402,0303,0301,0302,0203,0201,0202
JA4_o (sample)t12d430700_99f670e6aff1_2145654cd2a0
JA4_ro (sample)t12d430700_c02c,c02b,c030,009d,c02e,c032,009f,00a3,c02f,009c,c02d,c031,009e,00a2,c024,c028,003d,c026,c02a,006b,006a,c00a,c014,0035,c005,c00f,0039,0038,c023,c027,003c,c025,c029,0067,0040,c009,c013,002f,c004,c00e,0033,0032,00ff_0000,000a,000b,000d,0032,0017,002b_0403,0503,0603,0804,0805,0806,0809,080a,080b,0401,0501,0601,0402,0303,0301,0302,0203,0201,0202

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
he11nn030000_72be10f4ec6f_000000000000_0000000000001
ge11nn04engl_63707e660d1b_000000000000_0000000000001
he11nn040000_5192a00d9159_000000000000_0000000000001
ge11nn05engl_2b07ea22e586_000000000000_0000000000001
ge11nn060000_fdf37930e045_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:39+25:0:1460:mss*44,9:mss,sok,ts,nop,ws:df,id+:02
4:47+17:0:1460:mss*44,9:mss,sok,ts,nop,ws:df,id+:02
4:33+31:0:1460:65535,10:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_92
65535_2-4-8-1-3_1460_101

User-Agent

fingerprintco-occurrences
Java/1.8.0_3222
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5; Android) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.3895.54 Safari/537.36 HuaweiCrawler1
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; WOW64; Android) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.4636.89 Safari/537.36 HuaweiCrawler1

Country

fingerprintco-occurrences
HK · Hong Kong SAR China4
CN · China1

Network (ASN)

fingerprintco-occurrences
AS136907 · HUAWEI CLOUDS4
AS23724 · IDC, China Telecommunications Corporation1