TLS ClientHello (JA4)

t13d1011h1_61a7ad8aa9b6_f9531d972513

first seen 2026-07-01 14:33 · last seen 2026-09-14 11:22 · 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

Protocol	`t (TLS over TCP)`
TLS version	`13`
SNI	`d (domain)`
Cipher count	`10`
Extension count	`11`
ALPN	`h1`
Ciphers	`00ff, 1301, 1302, 1303, c02b, c02c, c02f, c030, cca8, cca9`
Extensions	`0005, 000a, 000b, 000d, 0017, 0023, 002b, 002d, 0033`
Signature algorithms	`0503, 0403, 0603, 0807, 0806, 0805, 0804, 0601, 0501, 0401`
JA4_r	`t13d1011h1_00ff,1301,1302,1303,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0017,0023,002b,002d,0033_0503,0403,0603,0807,0806,0805,0804,0601,0501,0401`
JA4_o (sample)	`t13d1011h1_b9b30c653583_6352ac4b19c8`
JA4_ro (sample)	`t13d1011h1_1302,1301,1303,c02c,c02b,cca9,c030,c02f,cca8,00ff_002b,000b,000d,0017,0023,0005,0010,002d,0033,0000,000a_0503,0403,0603,0807,0806,0805,0804,0601,0501,0401`

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
`ge11nn030000_341eb0d8946c_000000000000_000000000000`	2
`ge11nn040000_cf1edba2959c_000000000000_000000000000`	1

TCP SYN (p0f)

fingerprint	co-occurrences
`4:49+15:0:1410:mss*46,10:mss,sok,ts,nop,ws:df,id+:0`	1
`4:50+14:0:1452:mss*29,11:mss,sok,ts,nop,ws::0`	1
`4:112+16:0:1452:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`64860_2-4-8-1-3_1410_10`	1
`42340_2-4-8-1-3_1452_11`	1
`64240_2-1-3-1-1-4_1452_8`	1

User-Agent

fingerprint	co-occurrences
`SoftNews/0.1 (+https://github.com/softnews)`	2
`GitHubCopilotRuntime-WebFetch`	1

Country

fingerprint	co-occurrences
`DE` · Germany	1
`CN` · China	1
`IT` · Italy	1

Network (ASN)

fingerprint	co-occurrences
`AS4134` · CHINANET BACKBONE	1
`AS3209` · Vodafone GmbH	1
`AS3269` · Telecom Italia S.p.A.	1