TLS ClientHello (JA4)

t13d131100_f57a46bbacb6_ab7e3b40a677

first seen 2026-06-11 02:18 · last seen 2026-11-02 07:38 · JSON

Last 7 days (3026 observations)

Distinct clients per day (last 30 days, peak 1877/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`
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`
JA4_o (sample)	`t13d131100_45672f90a73c_0a6381ba93d6`
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`

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
`ge11nn14enus_a86c1525b786_000000000000_000000000000`	3027
`ge11nn030000_cd680697de12_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.6, powershell 7.6.5, powershell 7.6.4, +11 more.The fingerprint page shows the full measured match list. More on the catalog.	359
`ge11nn020000_818f42cc3fd7_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: php-guzzle 8.2.0, php-guzzle 8.1.0, php-guzzle 8.3.1, +13 more.The fingerprint page shows the full measured match list. More on the catalog.	202
`ge11nr19frfr_4e9b73ab7510_000000000000_000000000000`	195
`ge11nr19engb_4e9b73ab7510_000000000000_000000000000`	185
`ge11nn040000_8391bea91fb6_000000000000_000000000000`	173
`ge11nr19enus_4e9b73ab7510_000000000000_000000000000`	169
`ge11nr19zhtw_4e9b73ab7510_000000000000_000000000000`	165
`ge11nr19zhcn_4e9b73ab7510_000000000000_000000000000`	159
`ge11nr19dede_4e9b73ab7510_000000000000_000000000000`	157

TCP SYN (p0f)

fingerprint	co-occurrences
`4:44+20:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1529
`4:43+21:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1420
`4:58+6:0:1420:mss*46,7:mss,sok,ts,nop,ws:df,id+:0`	655
`4:48+16:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	116
`4:116+12:0:1160:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0`	100
`4:49+15:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	94
`4:115+13:0:1160:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0`	87
`4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	48
`4:48+16:0:1460:mss*44,9:mss,sok,ts,nop,ws:df,id+:0`	44
`4:46+18:0:1440:65535,6:mss,sok,ts,nop,ws:df,id+:0`	44

TCP SYN (JA4T)

fingerprint	co-occurrences
`64240_2-4-8-1-3_1460_7`	3469
`65320_2-4-8-1-3_1420_7`	646
`65535_2-4-8-1-3_1412_6`	303
`65535_2-4-8-1-3_1460_6`	259
`65535_2-4-8-1-3_1440_6`	221
`64240_2-4-8-1-3_1412_7`	207
`65535_2-1-3-1-1-4_1160_8`	194
`65535_2-4-8-1-3_1452_6`	161
`64240_2-4-8-1-3_1440_7`	139
`65535_2-4-8-1-3_1412_8`	135

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36`	3058
`Hello from Palo Alto Networks, find out more about our scans in https://docs-cortex.paloaltonetworks.com/r/1/Cortex-Xpanse/Scanning-activity`	567
`Go-http-client/1.1`	401
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 Edg/121.0.0.0`	178
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 Edg/122.0.0.0`	152
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 Edg/121.0.0.0`	149
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.0`	135
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1 Safari/605.1.15`	130
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.0`	127
`Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.1`	125

Country

fingerprint	co-occurrences
`ZA` · South Africa	3189
`BR` · Brazil	802
`US` · United States	587
`NL` · Netherlands	306
`DE` · Germany	302
`AR` · Argentina	280
`BD` · Bangladesh	218
`CO` · Colombia	216
`PK` · Pakistan	164
`MA` · Morocco	127

Network (ASN)

fingerprint	co-occurrences
`AS37611` · AFRIHOST SP (PTY) LTD	3027
`AS396982` · Google LLC	687
`AS212238` · Datacamp Limited	221
`AS8075` · Microsoft Corporation	170
`AS48090` · TECHOFF SRV LIMITED	88
`AS28573` · Claro NXT Telecomunicacoes Ltda	85
`AS36903` · Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	59
`AS22927` · Telefonica de Argentina	58
`AS10620` · Telmex Colombia S.A.	51
`AS14618` · Amazon.com, Inc.	45

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.	3074
`11ec,11eb,11ed,001d,0017,0018,0019` Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.27.3, go-net/http 1.26.10.The fingerprint page shows the full measured match list. More on the catalog.	117
`001d,0017`	2