TCP SYN (JA4T)

64240_2-4-8-1-3_1310_7

first seen 2026-07-25 11:50 · last seen 2026-09-25 20:43 · JSON

Decomposed attributes

TCP window64240
Option kinds2-4-8-1-3
MSS1310
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
t13d131000_f57a46bbacb6_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog.2
t13d4312h1_c7886603b240_b26ce05bbdd61
t13d4412h1_fd39b124ee10_58ed7828516f1

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
ge11nn12enus_b4d101a026a2_000000000000_0000000000001
ge11nr12enus_b4d101a026a2_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:44+20:0:1310:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:47+17:0:1310:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:48+16:0:1310:mss*44,7: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/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/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/136.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.48 Safari/537.361

Country

fingerprintco-occurrences
SE · Sweden2
IT · Italy1
BD · Bangladesh1

Network (ASN)

fingerprintco-occurrences
AS212171 · Local NCC Ltd.2
AS30722 · Fastweb SpA1
AS138001 · Galaxy Net1