TCP SYN (p0f)

4:39+25:0:1380:mss*47,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-01 15:22 · last seen 2026-07-01 15:22 · JSON

Decomposed attributes

IP version4
Initial TTL39+25
Options length0
MSS1380
Window sizemss*47
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
t13d3013h1_1d37bd780c83_8537cf56674e1

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.1

TCP SYN (JA4T)

fingerprintco-occurrences
64860_2-4-8-1-3_1380_71

User-Agent

fingerprintco-occurrences
Mozilla/5.01

Country

fingerprintco-occurrences
AT · Austria1

Network (ASN)

fingerprintco-occurrences
AS8447 · A1 Telekom Austria AG1