TLS ClientHello (JA4)

t13d1410h2_f4af447d284d_560390466015

first seen 2026-08-17 22:06 · last seen 2026-10-12 13:20 · 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	`14`
Extension count	`10`
ALPN	`h2`
Ciphers	`002f, 0035, 009c, 009d, 1301, 1302, 1303, c013, c014, c02b, c02c, c02f, c030, cca8`
Extensions	`000a, 000b, 000d, 0017, 002b, 002d, 0033, ff01`
Signature algorithms	`0403, 0804, 0401, 0503, 0805, 0501, 0806, 0601`
JA4_r	`t13d1410h2_002f,0035,009c,009d,1301,1302,1303,c013,c014,c02b,c02c,c02f,c030,cca8_000a,000b,000d,0017,002b,002d,0033,ff01_0403,0804,0401,0503,0805,0501,0806,0601`
JA4_o (sample)	`t13d1410h2_b1c4604d756c_d2893abad49d`
JA4_ro (sample)	`t13d1410h2_1301,1302,1303,c02f,c013,009d,cca8,c030,c014,c02c,c02b,002f,0035,009c_000b,0010,002b,000a,002d,0033,0017,ff01,0000,000d_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`	11

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`	11

TCP SYN (p0f)

fingerprint	co-occurrences
`4:46+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	2
`4:55+9:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	2
`4:50+14:0:1460:65535,9:mss,sok,ts,nop,ws:df,id+:0`	2
`4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:50+14:0:1460:mss*29,11:mss,nop,nop,sok,nop,ws:df,id+:0`	1
`4:54+10:0:1460:32768,10:mss,nop,ws,sok,ts::0`	1
`4:52+12:0:1460:mss*29,11:mss,sok,ts,nop,ws:df,id+:0`	1
`4:48+16:0:1460:mss*44,9:mss,nop,nop,sok,nop,ws:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`64240_2-4-8-1-3_1460_7`	5
`65535_2-4-8-1-3_1460_9`	2
`42340_2-4-8-1-3_1460_11`	1
`64240_2-1-1-4-1-3_1460_9`	1
`42340_2-1-1-4-1-3_1460_11`	1
`32768_2-1-3-4-8_1460_10`	1

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.2 Safari/537.36`	3
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36`	1
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.7 Safari/537.36`	1
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.1 Safari/537.36`	1
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.6 Safari/537.36`	1
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.2 Safari/537.36`	1
`Mozilla/5.0 (X11; CrOS x86_64 14541.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.5 Safari/537.36`	1
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.9 Safari/537.36`	1
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.9 Safari/537.36`	1

Country

fingerprint	co-occurrences
`SE` · Sweden	4
`DE` · Germany	3
`NL` · Netherlands	2
`US` · United States	1
`AT` · Austria	1

Network (ASN)

fingerprint	co-occurrences
`AS198093` · Foreningen for digitala fri- och rattigheter	4
`AS60729` · Stiftung Erneuerbare Freiheit	3
`AS215125` · Church of Cyberology	1
`AS208323` · Foundation for Applied Privacy	1
`AS60404` · Liteserver	1
`AS62744` · Quintex Alliance Consulting	1