TCP SYN (JA4T)

65535_2-4-8-1-3_1398_8

first seen 2026-07-27 00:10 · last seen 2026-09-07 22:33 · JSON

Decomposed attributes

TCP window65535
Option kinds2-4-8-1-3
MSS1398
Window scale8

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
t13d4412h1_fd39b124ee10_58ed7828516f2
t13d1515h1_8daaf6152771_de4a06bb82e31

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
ge11nn13enus_9db22d02e17a_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:48+16:0:1398:65535,8:mss,sok,ts,nop,ws:df,id+:01
4:43+21:0:1398:65535,8:mss,sok,ts,nop,ws:df,id+:01
4:44+20:0:1398:65535,8:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.122 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.361

Country

fingerprintco-occurrences
VN · Vietnam2
MK · Macedonia1

Network (ASN)

fingerprintco-occurrences
AS18403 · FPT Telecom Company1
AS43612 · Company for communications services A1 Makedonija DOOEL Skopje1
AS24086 · Viettel Corporation1