TCP SYN (p0f)

4:45+19:0:1420:mss*44,1:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-09-04 05:42 · last seen 2026-09-09 15:03 · JSON

Decomposed attributes

IP version4
Initial TTL45+19
Options length0
MSS1420
Window sizemss*44
Window scale1
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_0a20fe35d3a51
t13d1515h1_8daaf6152771_de4a06bb82e31

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_0000000000002

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1420_12

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 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
BR · Brazil1
PE · Peru1

Network (ASN)

fingerprintco-occurrences
AS270068 · DESARROLLO DE INFRAESTRUCTURA DE TELECOMUNICACIONES PERU S.A.C. (INFRATEL)1
AS274798 · 1 CLICK TELECOM LTDA1