TCP SYN (p0f)

4:111+17:0:1346:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-07-04 14:53 · last seen 2026-07-04 14:53 · JSON

Decomposed attributes

IP version4
Initial TTL111+17
Options length0
MSS1346
Window sizemss*44
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
Quirksdf,id+,ecn
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
t13d141100_cbb2034c60b8_e5728521abd42

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn07enus_729fbad63700_000000000000_0000000000002

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1346_82

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/119.01

Country

fingerprintco-occurrences
DE · Germany2

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.2