TCP SYN (JA4T)

28200_2-4-8-1-3_1410_12

first seen 2026-07-13 22:24 · last seen 2026-07-13 22:24 · JSON

Decomposed attributes

TCP window28200
Option kinds2-4-8-1-3
MSS1410
Window scale12

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
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.1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr040000_e1d2031bdfea_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:48+16:0:1410:mss*20,12:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0 Safari/537.361

Country

fingerprintco-occurrences
CN · China1

Network (ASN)

fingerprintco-occurrences
AS141679 · China Telecom Beijing Tianjin Hebei Big Data Industry Park Branch1