TCP SYN (p0f)

6:45+19:0:1440:mss*30,9:mss,sok,ts,nop,ws:flow:0

first seen 2026-08-15 13:23 · last seen 2026-08-15 13:23 · JSON

Decomposed attributes

IP version6
Initial TTL45+19
Options length0
MSS1440
Window sizemss*30
Window scale9
Options layoutmss,sok,ts,nop,ws
Quirksflow
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
t13d1713h1_ab0a1bf427ad_89ab6efea7732

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_ea6f06182064_000000000000_0000000000001
ge11nn06en00_98e697c2fa06_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
43200_2-4-8-1-3_1440_92

User-Agent

fingerprintco-occurrences
TopicResearchCollector/0.1 (academic-topic-research)2

Country

fingerprintco-occurrences
JP · Japan2

Network (ASN)

fingerprintco-occurrences
AS63949 · Akamai Connected Cloud2