TCP SYN (JA4T)

64240_2-4-8-1-3_1396_7

first seen 2026-06-30 18:46 · last seen 2026-07-30 08:21 · JSON

Decomposed attributes

TCP window64240
Option kinds2-4-8-1-3
MSS1396
Window scale7

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_b26ce05bbdd63
t13d4412h1_fd39b124ee10_58ed7828516f1

HTTP request (JA4H)

fingerprintco-occurrences
he11nn06ja00_fb4afd1f380a_000000000000_0000000000002
ge11nn06ja00_fb4afd1f380a_000000000000_0000000000001
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 (p0f)

fingerprintco-occurrences
4:47+17:0:1396:mss*44,7:mss,sok,ts,nop,ws:df,id+:03
4:45+19:0:1396:mss*44,7:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 16_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Mobile/15E148 Safari/604.12
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.361

Country

fingerprintco-occurrences
JP · Japan3
LB · Lebanon1

Network (ASN)

fingerprintco-occurrences
AS2516 · KDDI CORPORATION3
AS43019 · Farah Net S.a.r.l.1