TCP SYN (p0f)

4:111+17:0:1380:mss*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-06-19 09:27 · last seen 2026-06-23 14:12 · JSON

Decomposed attributes

IP version4
Initial TTL111+17
Options length0
MSS1380
Window sizemss*47
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
t12d860600_e18388e7f3a3_a1e9356827951
t12d200700_22c523c4c553_2dae41c691ec1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn05enus_a1be516b8e6e_000000000000_0000000000001
ge11nn040000_cf1edba2959c_000000000000_0000000000001

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; rv:143.0) Gecko/20100101 Firefox/143.01

Country

fingerprintco-occurrences
SG · Singapore1
AT · Austria1

Network (ASN)

fingerprintco-occurrences
AS9009 · M247 Europe SRL1
AS137409 · GSL Networks Pty LTD1