TCP SYN (p0f)

4:45+19:0:1460:65535,11:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-01 15:07 · last seen 2026-07-01 15:39 · JSON

Decomposed attributes

IP version4
Initial TTL45+19
Options length0
MSS1460
Window size65535
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
t13d591000_a33745022dd6_1f22a2ca17c42

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn07enus_71b742b5154a_000000000000_0000000000002

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1460_112

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; The Lounge IRC Client; +https://github.com/thelounge/thelounge) facebookexternalhit/1.1 Twitterbot/1.02

Country

fingerprintco-occurrences
FI · Finland2

Network (ASN)

fingerprintco-occurrences
AS24940 · Hetzner Online GmbH2