TCP SYN (JA4T)

65535_2-1-3-1-1-4_1160_8

first seen 2026-07-06 10:12 · last seen 2026-11-01 08:03 · JSON

Last 7 days (6 observations)

Distinct clients per day (last 30 days, peak 9/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

TCP window65535
Option kinds2-1-3-1-1-4
MSS1160
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
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.194

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_8391bea91fb6_000000000000_000000000000152
ge11nr040000_8391bea91fb6_000000000000_00000000000042

TCP SYN (p0f)

fingerprintco-occurrences
4:116+12:0:1160:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0100
4:115+13:0:1160:65535,8:mss,nop,ws,nop,nop,sok:df,id+:087
4:109+19:0:1160:65535,8:mss,nop,ws,nop,nop,sok:df,id+:05
4:110+18:0:1160:65535,8:mss,nop,ws,nop,nop,sok:df,id+:02

User-Agent

fingerprintco-occurrences
Go-http-client/1.1194

Country

fingerprintco-occurrences
DE · Germany194

Network (ASN)

fingerprintco-occurrences
AS212238 · Datacamp Limited194

TLS supported groups

fingerprintco-occurrences
11ec,11eb,11ed,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.27.3, go-net/http 1.26.10.The fingerprint page shows the full measured match list. More on the catalog.12