TCP SYN (JA4T)

42300_2-4-8-1-3_1410_8

first seen 2026-09-19 14:44 · last seen 2026-10-01 04:41 · JSON

Decomposed attributes

TCP window42300
Option kinds2-4-8-1-3
MSS1410
Window scale8

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
t13d1212h1_a538d02d76d5_f6eeaf393d2e140
t13d131100_f57a46bbacb6_ab7e3b40a677 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.5, go-net/http 1.26.4.The fingerprint page shows the full measured match list. More on the catalog.3

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn06*000_9faab82a4eea_000000000000_000000000000140
ge11nr060000_ee3b7ca6bc39_000000000000_0000000000002
ge11nn060000_b3f646fa8c66_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:43+21:0:1410:mss*30,8:mss,sok,ts,nop,ws:df,id+:0140
4:45+19:0:1410:mss*30,8:mss,sok,ts,nop,ws::01
4:44+20:0:1410:mss*30,8:mss,sok,ts,nop,ws::01
4:46+18:0:1410:mss*30,8:mss,sok,ts,nop,ws::01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; DataForSeoBot/1.0; +https://dataforseo.com/dataforseo-bot)140
Mozilla/5.0 (compatible; YandexUserproxy; robot; +http://yandex.com/bots)3

Country

fingerprintco-occurrences
DE · Germany140
RU · Russia3

Network (ASN)

fingerprintco-occurrences
AS24940 · Hetzner Online GmbH140
AS13238 · YANDEX LLC3