TCP SYN (JA4T)

32120_2-4-8-1-3_1460_9

first seen 2026-06-30 19:31 · last seen 2026-10-31 21:10 · JSON

Last 7 days (4 observations)

Distinct clients per day (last 30 days, peak 1/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 window32120
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
t12d290700_fc2078a0b8c0_8c06664c3ac58
t13d301200_1d37bd780c83_0b298858d6c15
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.5

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr06enus_09fb680966d5_000000000000_0000000000005
ge11nn040000_bfa5a9b89dd6_000000000000_0000000000005
ge11nn05en00_61812dc1cc58_000000000000_0000000000003
ge20nr13zhcn_5907f7c6644a_000000000000_0000000000002
ge20nn14zhcn_3fb598f484fb_000000000000_0000000000001
ge20nr14zhcn_3fb598f484fb_000000000000_0000000000001
ge20nn14zhcn_e7796bbdab6f_000000000000_0000000000001

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.2
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 152.0.7977.83, +81 more.The fingerprint page shows the full measured match list. More on the catalog.2
1:65536;2:0;4:6291456;6:262144|15663105|3:1:0:256|m,a,s,p1

TCP SYN (p0f)

fingerprintco-occurrences
4:52+12:0:1460:mss*22,9:mss,sok,ts,nop,ws:df,id+:05
4:47+17:0:1460:mss*22,9:mss,sok,ts,nop,ws::04
4:49+15:0:1460:mss*22,9:mss,sok,ts,nop,ws::03
4:56+8:0:1460:mss*22,9:mss,sok,ts,nop,ws:df,id+:02
4:57+7:0:1460:mss*22,9:mss,sok,ts,nop,ws:df,id+:02
4:54+10:0:1460:mss*22,9:mss,sok,ts,nop,ws::01
4:51+13:0:1460:mss*22,9:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)8
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/154.0.0.0 Safari/537.36 Edg/154.0.0.05
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.03
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Safari/605.1.151

Country

fingerprintco-occurrences
NO · Norway8
NL · Netherlands5
JP · Japan5

Network (ASN)

fingerprintco-occurrences
AS29695 · Lyse Tele AS8
AS48090 · TECHOFF SRV LIMITED5
AS216211 · CYBERVERSE LLC5

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, powershell 7.6.8, +1 more.The fingerprint page shows the full measured match list. More on the catalog.4
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, php-guzzle 8.3.1, curl 7.88.1, +10 more.The fingerprint page shows the full measured match list. More on the catalog.2