TLS ClientHello (JA4)

t13d1313h2_f57a46bbacb6_9249cab70c77

first seen 2026-07-30 13:06 · last seen 2026-09-15 21:59 · JSON

Last 7 days (11 observations)

Distinct clients per day (last 30 days, peak 3/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	`13`
Extension count	`13`
ALPN	`h2`
Ciphers	`1301, 1302, 1303, c009, c00a, c013, c014, c02b, c02c, c02f, c030, cca8, cca9`
Extensions	`0005, 000a, 000b, 000d, 0012, 0017, 0023, 002b, 002d, 0033, ff01`
Signature algorithms	`0804, 0403, 0807, 0805, 0806, 0401, 0501, 0601, 0503, 0603, 0201, 0203`
JA4_r	`t13d1313h2_1301,1302,1303,c009,c00a,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0012,0017,0023,002b,002d,0033,ff01_0804,0403,0807,0805,0806,0401,0501,0601,0503,0603,0201,0203`
JA4_o (sample)	`t13d1313h2_45672f90a73c_0a7bd12b93ac`
JA4_ro (sample)	`t13d1313h2_c02b,c02f,c02c,c030,cca9,cca8,c009,c013,c00a,c014,1301,1302,1303_0000,000b,0023,ff01,0017,0012,0005,000a,000d,0010,002b,0033,002d_0804,0403,0807,0805,0806,0401,0501,0601,0503,0603,0201,0203`

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
`ge20nr020000_fb4f949fd323_000000000000_000000000000`	38
`ge20nn020000_fb4f949fd323_000000000000_000000000000`	26

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`1:65536;2:0;3:1000;4:6291456;6:262144\|15663105\|1:1:0:256\|m,a,s,p`	64

TCP SYN (p0f)

fingerprint	co-occurrences
`4:42+22:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	21
`4:43+21:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	18
`4:42+22:0:1460:35844,10:mss,sok,ts,nop,ws:df,id+:0`	5
`4:49+15:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	3
`4:46+18:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	3
`4:50+14:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	2
`4:115+13:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0`	1
`4:51+13:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	1
`4:47+17:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:43+21:0:1460:35844,10:mss,sok,ts,nop,ws:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`42340_2-4-8-1-3_1460_10`	48
`35844_2-4-8-1-3_1460_10`	7
`64240_2-1-3-1-1-4_1460_8`	2
`65535_2-1-3-1-1-8-4-0-0_1452_5`	2
`29200_2-4-8-1-3_1460_7`	1
`42340_2-4-8-1-3_1460_13`	1
`29200_2-4-8-1-3_1460_10`	1
`8192_2-1-3-1-1-4_1460_14`	1
`64240_2-4-8-1-3_1300_7`	1

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_2 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Version/7.0 Mobile Safari/537.36 (compatible; Bytespider; https://bytedance.sg.larkoffice.com/docx/K5bxdypulop3IIxrJb0lOjLVgFe)`	49
`Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Bytespider;https://zhanzhang.toutiao.com/`	4
`Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)`	2
`Mozilla/5.0 (iPad; CPU OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.1`	2
`Mozilla/5.0 (iPad; CPU OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/124.0.6367.111 Mobile/15E148 Safari/604.1`	1
`Mozilla/5.0 (Linux; Android 14; RMX3840) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.163 Mobile Safari/537.36`	1
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Edg/126.0.2592.68 Safari/537.36`	1
`Mozilla/5.0 (Linux; Android 14; V2318) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.144 Mobile Safari/537.36`	1
`Mozilla/5.0 (Macintosh; Intel Mac OS X 13_6_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.6312.124 Safari/537.36`	1
`Mozilla/5.0 (Linux; Android 14; CPH2581) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.101 Mobile Safari/537.36`	1

Country

fingerprint	co-occurrences
`SG` · Singapore	51
`CN` · China	5
`US` · United States	4
`VN` · Vietnam	2
`CZ` · Czechia	1
`BA` · Bosnia & Herzegovina	1

Network (ASN)

fingerprint	co-occurrences
`AS16509` · Amazon.com, Inc.	51
`AS4837` · CHINA UNICOM China169 Backbone	3
`AS7029` · Windstream Communications LLC	2
`AS45899` · VNPT Corp	2
`AS23724` · IDC, China Telecommunications Corporation	1
`AS7922` · Comcast Cable Communications, LLC	1
`AS42560` · Telemach BH d.o.o. Sarajevo	1
`AS16019` · Vodafone Czech Republic a.s.	1
`AS55960` · Beijing Guanghuan Xinwang Digital	1
`AS399861` · Mobite Network LLC	1