TCP SYN (p0f)

4:52+12:0:1399:mss*44,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-20 03:35 · last seen 2026-06-30 01:01 · JSON

Decomposed attributes

IP version4
Initial TTL52+12
Options length0
MSS1399
Window sizemss*44
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
t13d1812h1_85036bcba153_b26ce05bbdd61
t13d181100_85036bcba153_d41ae481755e1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_88d30a62b7ad_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.25.0.The fingerprint page shows the full measured match list. More on the catalog.1
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.1

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1399_71

User-Agent

fingerprintco-occurrences
python-requests/2.32.51
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Safari/537.361

Country

fingerprintco-occurrences
US · United States1
NL · Netherlands1

Network (ASN)

fingerprintco-occurrences
AS212238 · Datacamp Limited1
AS137409 · GSL Networks Pty LTD1