TCP SYN (JA4T)

64240_2-4-8-1-3_1318_7

first seen 2026-08-10 18:40 · last seen 2026-08-10 18:40 · JSON

Decomposed attributes

TCP window64240
Option kinds2-4-8-1-3
MSS1318
Window scale7

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
t13d2012h1_2b729b4bf6f3_9e7b989ebec81

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn030000_fe444ad14866_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0, curl 7.88.1, curl 8.21.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
4:46+18:0:1318:mss*44,7:mss,sok,ts,nop,ws::01

User-Agent

fingerprintco-occurrences
curl/8.8.01

Country

fingerprintco-occurrences
JP · Japan1

Network (ASN)

fingerprintco-occurrences
AS17676 · SoftBank Corp.1