TCP SYN (p0f)

4:51+13:0:1452:mss*44,8:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-16 03:40 · last seen 2026-07-16 03:40 · JSON

Decomposed attributes

IP version4
Initial TTL51+13
Options length0
MSS1452
Window sizemss*44
Window scale8
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
t13d3013h1_1d37bd780c83_ecd0401ec68b1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_66d37a417839_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1452_81

User-Agent

fingerprintco-occurrences
Python/3.13 aiohttp/3.14.11

Country

fingerprintco-occurrences
ES · Spain1

Network (ASN)

fingerprintco-occurrences
AS3352 · TELEFONICA DE ESPANA S.A.U.1