TLS ClientHello (JA4)

t13d0710h2_ac681801c278_560390466015

first seen 2026-10-10 08:16 · last seen 2026-10-11 00:38 · JSON

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	`7`
Extension count	`10`
ALPN	`h2`
Ciphers	`002f, 1301, 1302, 1303, c02b, c02c, c030`
Extensions	`000a, 000b, 000d, 0017, 002b, 002d, 0033, ff01`
Signature algorithms	`0403, 0804, 0401, 0503, 0805, 0501, 0806, 0601`
JA4_r	`t13d0710h2_002f,1301,1302,1303,c02b,c02c,c030_000a,000b,000d,0017,002b,002d,0033,ff01_0403,0804,0401,0503,0805,0501,0806,0601`
JA4_o (sample)	`t13d0710h2_75c85ccc89e4_00da0d52bc4e`
JA4_ro (sample)	`t13d0710h2_1301,1302,1303,002f,c02c,c030,c02b_000b,0010,000d,002b,0017,000a,ff01,0000,002d,0033_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`	2

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`	2

TCP SYN (p0f)

fingerprint	co-occurrences
`4:50+14:0:1460:mss*29,11:mss,sok,ts,nop,ws:df,id+:0`	1
`4:50+14:0:1460:65535,9:mss,sok,ts,nop,ws:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-4-8-1-3_1460_9`	1
`42340_2-4-8-1-3_1460_11`	1

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (X11; CrOS x86_64 14541.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.4 Safari/537.36`	2

Country

fingerprint	co-occurrences
`DE` · Germany	2

Network (ASN)

fingerprint	co-occurrences
`AS60729` · Stiftung Erneuerbare Freiheit	2