TCP SYN (p0f)

4:119+9:0:1380:mss*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-06-14 01:16 · last seen 2026-06-14 01:16 · JSON

Decomposed attributes

IP version4
Initial TTL119+9
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
t12d210700_76e208dd3e22_f28add8e7af03

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn020000_3ed38b250d3d_000000000000_0000000000001
po11nn030000_6240e96dc639_000000000000_0000000000001
ge11nn010000_4740ae6347b0_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: rust-hyper 1.11.0, rust-hyper 1.11.1, rust-hyper 1.10.1.The fingerprint page shows the full measured match list. More on the catalog.1

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Firefox/128.01

Country

fingerprintco-occurrences
US · United States3

Network (ASN)

fingerprintco-occurrences
AS14618 · Amazon.com, Inc.3