TCP SYN (p0f)

4:51+13:0:1400:mss*20,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-23 19:49 · last seen 2026-08-07 02:29 · JSON

Decomposed attributes

IP version4
Initial TTL51+13
Options length0
MSS1400
Window sizemss*20
Window scale7
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
t13d4312h1_c7886603b240_b26ce05bbdd65
t13d190900_9dc949149365_97f8aa674fd91

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.5
ge11nn060000_04b3596173ac_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
29200_2-4-8-1-3_1400_76

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome/120.0.0.05
Go-http-client/1.11

Country

fingerprintco-occurrences
CN · China6

Network (ASN)

fingerprintco-occurrences
AS4134 · CHINANET BACKBONE5
AS137266 · CHINATELECOM Hubei province Wuhan 5G network1