TCP SYN (p0f)

4:47+17:0:1436:65535,2:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-09-17 18:31 · last seen 2026-09-17 18:31 · JSON

Decomposed attributes

IP version4
Initial TTL47+17
Options length0
MSS1436
Window size65535
Window scale2
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
t13d2013h1_2b729b4bf6f3_e24568c0d4401

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.1

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1436_21

User-Agent

fingerprintco-occurrences
curl/8.21.01

Country

fingerprintco-occurrences
US · United States1

Network (ASN)

fingerprintco-occurrences
AS11976 · Fidelity Communication International Inc.1