TCP SYN (p0f)

4:45+19:0:1460:8192,2:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-11-01 16:27 · last seen 2026-11-01 16:27 · JSON

Last 7 days (2 observations)

Decomposed attributes

IP version4
Initial TTL45+19
Options length0
MSS1460
Window size8192
Window scale2
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
t12d1508h1_0707305c9f76_dabdd7d2b0fa2

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn030000_fe444ad14866_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0, curl 7.88.1, curl 8.21.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.2

TCP SYN (JA4T)

fingerprintco-occurrences
8192_2-1-3-1-1-4_1460_22

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/156.0.0.0 Mobile Safari/537.362

Country

fingerprintco-occurrences
RU · Russia2

Network (ASN)

fingerprintco-occurrences
AS40995 · Sibirskie Seti Ltd.2

TLS supported groups

fingerprintco-occurrences
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, winhttp 10.0.20348.1, +2 more.The fingerprint page shows the full measured match list. More on the catalog.2