TCP SYN (p0f)

4:40+24:0:1460:42300,11:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-19 16:56 · last seen 2026-06-21 09:56 · JSON

Decomposed attributes

IP version4
Initial TTL40+24
Options length0
MSS1460
Window size42300
Window scale11
Options layoutmss,sok,ts,nop,ws
Quirksdf,id+
Payload class0

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
t13d1714h1_5b57614c22b0_43ade6aba3df1
t13d3012h1_1d37bd780c83_8e6e362c5eac1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_217776c81665_000000000000_0000000000002

User-Agent

fingerprintco-occurrences
curl/8.7.11
bun-fingerprint-check/1.01

Country

fingerprintco-occurrences
KR · South Korea2

Network (ASN)

fingerprintco-occurrences
AS45102 · Alibaba (US) Technology Co., Ltd.2