TCP SYN (JA4T)

42625_2-4-8-1-3_1375_9

first seen 2026-08-04 15:13 · last seen 2026-08-04 15:13 · JSON

Decomposed attributes

TCP window42625
Option kinds2-4-8-1-3
MSS1375
Window scale9

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
t13d141000_cbb2034c60b8_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.22.12.The fingerprint page shows the full measured match list. More on the catalog.3

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn030000_cd680697de12_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.5, powershell 7.6.4, go-net/http 1.27.0, +7 more.The fingerprint page shows the full measured match list. More on the catalog.2
he11nn020000_818f42cc3fd7_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:49+15:0:1375:mss*31,9:mss,sok,ts,nop,ws:df,id+:02
4:48+16:0:1375:mss*31,9:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Go-http-client/1.13

Country

fingerprintco-occurrences
NL · Netherlands3

Network (ASN)

fingerprintco-occurrences
AS34343 · BIP Backbone ASN3