TCP SYN (p0f)

4:239+16:0:1412:mss*44,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-08-08 00:23 · last seen 2026-08-30 16:12 · JSON

Decomposed attributes

IP version4
Initial TTL239+16
Options length0
MSS1412
Window sizemss*44
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
t13d1515h1_8daaf6152771_de4a06bb82e33
t13d1515h1_8daaf6152771_0a20fe35d3a51

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_0000000000004

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1412_74

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.361

Country

fingerprintco-occurrences
HR · Croatia2
SE · Sweden1
PE · Peru1

Network (ASN)

fingerprintco-occurrences
AS205714 · Telemach Hrvatska d.o.o.2
AS265691 · WI-NET TELECOM S.A.C.1
AS29518 · Bredband2 AB1