TLS ClientHello (JA4)

t13d131100_f57a46bbacb6_e5728521abd4

first seen 2026-06-11 02:32 · last seen 2026-11-01 19:42 · JSON

Last 7 days (660 observations)

Distinct clients per day (last 30 days, peak 109/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	`11`
ALPN	`00`
Ciphers	`1301, 1302, 1303, c009, c00a, c013, c014, c02b, c02c, c02f, c030, cca8, cca9`
Extensions	`0005, 000a, 000b, 000d, 0012, 0017, 002b, 0032, 0033, ff01`
Signature algorithms	`0804, 0403, 0807, 0805, 0806, 0401, 0501, 0601, 0503, 0603, 0201, 0203`
JA4_r	`t13d131100_1301,1302,1303,c009,c00a,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0012,0017,002b,0032,0033,ff01_0804,0403,0807,0805,0806,0401,0501,0601,0503,0603,0201,0203`
JA4_o (sample)	`t13d131100_45672f90a73c_c5834fa9d55a`
JA4_ro (sample)	`t13d131100_c02b,c02f,c02c,c030,cca9,cca8,c009,c013,c00a,c014,1301,1302,1303_0000,000b,ff01,0017,0012,0005,000a,000d,0032,002b,0033_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
`ge11nn10zhcn_9c0cf7475f83_000000000000_000000000000`	7080
`ge11nr10zhcn_9c0cf7475f83_000000000000_000000000000`	1972
`ge11nn08zhcn_bd35aedc6348_000000000000_000000000000`	168
`ge11nr08zhcn_bd35aedc6348_000000000000_000000000000`	145
`ge11nn10zhcn_986c3fb09fa9_000000000000_000000000000`	64
`ge11nr07enus_b23b8373b424_000000000000_000000000000`	61
`ge11nr10zhcn_986c3fb09fa9_000000000000_000000000000`	31
`ge11nr16enus_73e9eec732a9_000000000000_000000000000`	26
`ge11nr030000_cd680697de12_000000000000_000000000000`	19
`ge11nr17enus_9f4f72c36cf0_000000000000_000000000000`	16

TCP SYN (p0f)

fingerprint	co-occurrences
`4:50+14:0:1424:mss*20,7:mss,sok,ts,nop,ws:df,id+:0`	2558
`4:47+17:0:1424:mss*20,7:mss,sok,ts,nop,ws:df,id+:0`	1598
`4:49+15:0:1424:mss*20,7:mss,sok,ts,nop,ws:df,id+:0`	1110
`4:53+11:0:1424:mss*20,7:mss,sok,ts,nop,ws:df,id+:0`	985
`4:46+18:0:1424:mss*20,7:mss,sok,ts,nop,ws:df,id+:0`	480
`4:45+19:0:1424:mss*20,7:mss,sok,ts,nop,ws:df,id+:0`	365
`4:52+12:0:1424:mss*20,7:mss,sok,ts,nop,ws:df,id+:0`	311
`4:48+16:0:1424:mss*20,7:mss,sok,ts,nop,ws:df,id+:0`	287
`4:49+15:0:1424:25380,7:mss,sok,ts,nop,ws:df,id+:0`	244
`4:44+20:0:1424:mss*20,7:mss,sok,ts,nop,ws:df,id+:0`	206

TCP SYN (JA4T)

fingerprint	co-occurrences
`29200_2-4-8-1-3_1424_7`	7952
`25380_2-4-8-1-3_1424_7`	998
`32120_2-4-8-1-3_1460_7`	91
`64240_2-4-8-1-3_1460_9`	51
`64240_2-4-8-1-3_1460_7`	34
`64240_2-1-3-1-1-4_1460_8`	19
`64240_2-4-8-1-3_1360_7`	19
`64240_2-4-8-1-3_1436_7`	13
`64800_2-4-8-1-3_1440_7`	8
`64800_2-4-8-1-3_1440_10`	5

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1`	9460
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36`	19
`Go-http-client/1.1`	16
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36`	12
`Mozilla/5.0 (iPhone; CPU iPhone OS 17_1_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1.2 Mobile/15E148 Safari/604`	9
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 Agency/93.8.2357.5`	9
`Mozilla/5.0 (Linux; Android 12; SAMSUNG SM-A415F) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/23.0 Chrome/115.0.0.0 Mobile Safari/537.3`	6
`Mozilla/5.0 (l9scan/2.0.16a3a316a313a316568366a323036323; +https://leakix.net)`	6
`Mozilla/5.0 (Linux; Android 14; SM-S901B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.280 Mobile Safari/537.36 OPR/80.4.4244.7786`	6
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123`	5

Country

fingerprint	co-occurrences
`US` · United States	3465
`SG` · Singapore	1795
`DE` · Germany	823
`BR` · Brazil	777
`KR` · South Korea	669
`HK` · Hong Kong SAR China	662
`JP` · Japan	540
`CN` · China	335
`ID` · Indonesia	217
`TH` · Thailand	205

Network (ASN)

fingerprint	co-occurrences
`AS132203` · Tencent Building, Kejizhongyi Avenue	9052
`AS45090` · Shenzhen Tencent Computer Systems Company Limited	318
`AS45102` · Alibaba (US) Technology Co., Ltd.	75
`AS202412` · Omegatech LTD	42
`AS51747` · Internet Vikings International AB	33
`AS12552` · GlobalConnect AB	19
`AS213388` · IIC RAIL LIMITED	19
`AS14061` · DigitalOcean, LLC	17
`AS37963` · Hangzhou Alibaba Advertising Co.,Ltd.	17
`AS201814` · MEVSPACE sp. z o.o.	14

TLS supported groups

fingerprint	co-occurrences
`11ec,001d,0017,0018,0019` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 158.0.1, firefox 157.0, firefox 157.0.1, +5 more.The fingerprint page shows the full measured match list. More on the catalog.	1654
`001d,0017,0018,0019` Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13, curl 8.7.1.The fingerprint page shows the full measured match list. More on the catalog.	22