TCP SYN (p0f)

4:41+23:0:1400:65535,6:mss,sok,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,ws:df:0

first seen 2026-09-22 08:45 · last seen 2026-09-22 08:45 · JSON

Decomposed attributes

IP version4
Initial TTL41+23
Options length0
MSS1400
Window size65535
Window scale6
Options layoutmss,sok,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,nop,ws
Quirksdf
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
t13d231000_770569c23601_1f22a2ca17c41

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn020000_818f42cc3fd7_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: php-guzzle 8.2.0, php-guzzle 8.1.0, php-guzzle 8.3.1, +13 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-1-1-1-1-1-1-1-1-1-1-1-3_1400_61

User-Agent

fingerprintco-occurrences
uclient-fetch1

Country

fingerprintco-occurrences
CN · China1

Network (ASN)

fingerprintco-occurrences
AS56046 · China Mobile communications corporation1