TCP SYN (JA4T)

29200_2-1-1-4-1-3_1460_9

first seen 2026-09-28 03:44 · last seen 2026-10-23 22:08 · JSON

Distinct clients per day (last 30 days, peak 104/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 window29200
Option kinds2-1-1-4-1-3
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
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.1195
t13d3013h2_1d37bd780c83_8537cf56674e2

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn13enus_0c2c1d640f3e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 151.0.7922.137, chrome 151.0.7922.170, chrome 151.0.7922.108, +36 more.The fingerprint page shows the full measured match list. More on the catalog.1195
ge20nn030000_bf75ddd0bb29_000000000000_0000000000002

HTTP/2 frames (Akamai)

fingerprintco-occurrences
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, +57 more.The fingerprint page shows the full measured match list. More on the catalog.1195
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

TCP SYN (p0f)

fingerprintco-occurrences
4:43+21:0:1460:mss*20,9:mss,nop,nop,sok,nop,ws:df,id+:0340
4:42+22:0:1460:mss*20,9:mss,nop,nop,sok,nop,ws:df,id+:0219
4:45+19:0:1460:mss*20,9:mss,nop,nop,sok,nop,ws:df,id+:0218
4:44+20:0:1460:mss*20,9:mss,nop,nop,sok,nop,ws:df,id+:0195
4:41+23:0:1460:mss*20,9:mss,nop,nop,sok,nop,ws:df,id+:0132
4:40+24:0:1460:mss*20,9:mss,nop,nop,sok,nop,ws:df,id+:061
4:38+26:0:1460:mss*20,9:mss,nop,nop,sok,nop,ws:df,id+:030
4:58+6:0:1460:mss*20,9:mss,nop,nop,sok,nop,ws:df,id+:01
4:57+7:0:1460:mss*20,9:mss,nop,nop,sok,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.361195
curl/8.14.12

Country

fingerprintco-occurrences
CN · China1195
US · United States1
CA · Canada1

Network (ASN)

fingerprintco-occurrences
AS58461 · CT HangZhou IDC407
AS58563 · CHINANET Hubei province network265
AS134238 · CHINANET Jiangx province IDC network171
AS4811 · China Telecom (Group)166
AS135089 · China Telecom143
AS58519 · Cloud Computing Corporation30
AS38283 · CHINANET SiChuan Telecom Internet Data Center13
AS63023 · GTHost1
AS62563 · GLOBALTELEHOST Corp.1

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,001e,0018,0019,0100,0101 Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.22.1, python-httpx 0.28.1, python-requests 2.34.2, +2 more.The fingerprint page shows the full measured match list. More on the catalog.2