TCP SYN (p0f)

4:40+24:0:1460:62720,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-31 22:38 · last seen 2026-07-31 22:38 · JSON

Decomposed attributes

IP version4
Initial TTL40+24
Options length0
MSS1460
Window size62720
Window scale7
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

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_5ddb03fb9e99_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
62720_2-4-8-1-3_1460_71

User-Agent

fingerprintco-occurrences
understory/0.1 (CT research; https://github.com/0x4b) +contact-via-repo1

Country

fingerprintco-occurrences
AE · United Arab Emirates1

Network (ASN)

fingerprintco-occurrences
AS31898 · Oracle Corporation1