TCP SYN (p0f)

4:115+13:0:1284:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-31 14:54 · last seen 2026-08-31 14:54 · JSON

Decomposed attributes

IP version4
Initial TTL115+13
Options length0
MSS1284
Window sizemss*44
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
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
t13d1613h2_1711a4c0508c_65df7edfe3b31

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn13ruru_9519c2577190_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
4:33554432;1:65536;2:0;4:33554432;6:262144|33488897|1:1:0:256|m,a,s,p1

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1284_81

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
EE · Estonia1

Network (ASN)

fingerprintco-occurrences
AS209693 · OC NETWORKS LIMITED1