TCP SYN (JA4T)

65535_2-4-8-1-3_1220_10

first seen 2026-07-01 20:57 · last seen 2026-09-01 05:27 · JSON

Decomposed attributes

TCP window65535
Option kinds2-4-8-1-3
MSS1220
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
t13d1513h2_8daaf6152771_eca864cca44a2
t13d1515h1_8daaf6152771_0a20fe35d3a51

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn030000_80b089f68b8e_000000000000_0000000000002
ge11nn13enus_9db22d02e17a_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
4:16777216|16711681|0|m,p,a,s2

TCP SYN (p0f)

fingerprintco-occurrences
6:242+13:0:1220:65535,10:mss,sok,ts,nop,ws:flow:02
4:45+19:0:1220:65535,10:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Harmonic-HN-Android/3.0.1/release2
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
DE · Germany2
NP · Nepal1

Network (ASN)

fingerprintco-occurrences
AS3320 · Deutsche Telekom AG2
AS38565 · Ncell Pvt. Ltd.1