TCP SYN (p0f)

4:109+19:0:1440:8192,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-30 11:10 · last seen 2026-09-26 00:29 · JSON

Decomposed attributes

IP version4
Initial TTL109+19
Options length0
MSS1440
Window size8192
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
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_b26ce05bbdd62
t13d2913h1_723694b0fccc_5671b5df50291

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.2
ge11nr11soso_835281d8e5d9_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
8192_2-1-3-1-1-4_1440_83

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.361
Mozilla/5.0 (iPhone; CPU iPhone OS 16_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
TW · Taiwan2
BD · Bangladesh1

Network (ASN)

fingerprintco-occurrences
AS3462 · Data Communication Business Group2
AS23956 · AmberIT Limited1