TCP SYN (JA4T)

64240_2-4-8-1-3_1414_10

first seen 2026-09-11 05:06 · last seen 2026-09-11 05:25 · JSON

Decomposed attributes

TCP window64240
Option kinds2-4-8-1-3
MSS1414
Window scale10

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
t13d3112h2_e8f1e7e78f70_b26ce05bbdd6 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.5.0, php-curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog.2

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.13.0, +11 more.The fingerprint page shows the full measured match list. More on the catalog.2

HTTP/2 frames (Akamai)

fingerprintco-occurrences
3:100;4:10485760;2:0|1048510465|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0.The fingerprint page shows the full measured match list. More on the catalog.2

TCP SYN (p0f)

fingerprintco-occurrences
4:47+17:0:1414:mss*44,10:mss,sok,ts,nop,ws::02

User-Agent

fingerprintco-occurrences
curl/8.5.02

Country

fingerprintco-occurrences
JP · Japan2

Network (ASN)

fingerprintco-occurrences
AS2497 · Internet Initiative Japan Inc.2