TCP SYN (JA4T)

16060_2-4-8-1-3_1460_9

first seen 2026-08-13 07:37 · last seen 2026-10-30 21:35 · JSON

Last 7 days (2 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

TCP window16060
Option kinds2-4-8-1-3
MSS1460
Window scale9

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.

TLS ClientHello (JA4)

fingerprintco-occurrences
t13d1011h1_61a7ad8aa9b6_3fcd1a44f3e317
t13d3013h2_1d37bd780c83_8537cf56674e Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.18.0.The fingerprint page shows the full measured match list. More on the catalog.2
t13d1517h2_8daaf6152771_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 155.0.1, firefox 154.0, firefox 156.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.1
t13d1516h2_8daaf6152771_806a8c22fdea Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 151.0.7922.137, chromium 151.0.7922.34, +28 more.The fingerprint page shows the full measured match list. More on the catalog.1
t13d1517h2_8daaf6152771_cb7bf5808d99 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 152.0.7977.83, chrome 156.0.8078.48, chrome 154.0.8037.57, +27 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr05enus_20ffb2d95d94_000000000000_0000000000009
ge11nr040000_cf1edba2959c_000000000000_0000000000008
ge20nn030000_bf75ddd0bb29_000000000000_0000000000002
ge20nn13zhcn_9519c2577190_000000000000_0000000000001
ge20nr10encn_d353d425b0bb_000000000000_0000000000001
ge20nn13encn_0c2c1d640f3e_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
3:100;4:65536;2:0|1048510465|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, curl 8.18.0, curl 8.21.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.2
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +60 more.The fingerprint page shows the full measured match list. More on the catalog.2
1:4096;2:0;4:32768;5:16384|12517377|3:0:0:42|m,p,a,s1

TCP SYN (p0f)

fingerprintco-occurrences
4:51+13:0:1460:mss*11,9:mss,sok,ts,nop,ws:df,id+:07
4:50+14:0:1460:mss*11,9:mss,sok,ts,nop,ws:df,id+:03
4:55+9:0:1460:mss*11,9:mss,sok,ts,nop,ws:df,id+:02
4:47+17:0:1460:mss*11,9:mss,sok,ts,nop,ws:df,id+:02
4:52+12:0:1460:mss*11,9:mss,sok,ts,nop,ws:df,id+:02
4:58+6:0:1460:mss*11,9:mss,sok,ts,nop,ws:df,id+:02
4:56+8:0:1460:mss*11,9:mss,sok,ts,nop,ws:df,id+:02
4:57+7:0:1460:mss*11,9:mss,sok,ts,nop,ws:df,id+:02

User-Agent

fingerprintco-occurrences
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; SEOJuice-SearchBot/1.0; +https://seojuice.io/bot17
curl/8.14.12
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36 Edg/151.0.0.01
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/154.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (Android 12; Mobile; rv:158.0) Gecko/158.0 Firefox/158.01

Country

fingerprintco-occurrences
US · United States12
DE · Germany5
HK · Hong Kong SAR China2
LT · Lithuania2
KR · South Korea1

Network (ASN)

fingerprintco-occurrences
AS212238 · Datacamp Limited11
AS9009 · M247 Europe SRL3
AS9269 · Hong Kong Broadband Network Ltd.2
AS46450 · Pilot Fiber, Inc.2
AS37518 · Fiber Grid INC2
AS31898 · Oracle Corporation1
AS2914 · NTT America, Inc.1

TLS supported groups

fingerprintco-occurrences
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, winhttp 10.0.20348.1, +2 more.The fingerprint page shows the full measured match list. More on the catalog.13
11ec,001d,0017,001e,0018,0019,0100,0101 Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1, python-requests 2.34.2, curl 8.23.0, +4 more.The fingerprint page shows the full measured match list. More on the catalog.2
0a0a,11ec,001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 156.0.8078.48, edge 155.0.4283.62, chrome 156.0.8078.47, +11 more.The fingerprint page shows the full measured match list. More on the catalog.1
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.1