TCP SYN (JA4T)

65535_2-1-3-1-1-8-4-0-0_1317_6

first seen 2026-09-24 11:41 · last seen 2026-09-24 11:41 · JSON

Decomposed attributes

TCP window65535
Option kinds2-1-3-1-1-8-4-0-0
MSS1317
Window scale6

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
t13d2013h1_a09f3c656075_7f0f34a4126d1

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
6:44+20:0:1317:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:flow:01

User-Agent

fingerprintco-occurrences
curl/8.21.01

Country

fingerprintco-occurrences
RU · Russia1

Network (ASN)

fingerprintco-occurrences
AS25159 · PJSC MegaFon1