TCP SYN (JA4T)

65535_2-4-8-1-3_1456_6

first seen 2026-07-20 19:47 · last seen 2026-09-15 01:48 · JSON

Last 7 days (2 observations)

Distinct clients per day (last 30 days, peak 5/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

TCP window65535
Option kinds2-4-8-1-3
MSS1456
Window scale6

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_58ed7828516f16
t13d1515h1_8daaf6152771_de4a06bb82e313
t13d1515h1_8daaf6152771_0a20fe35d3a58
t13d1516h1_8daaf6152771_1a63afa7c4782

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_00000000000018
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.16
ge11nn14enus_4a2973d235de_000000000000_0000000000005

TCP SYN (p0f)

fingerprintco-occurrences
4:47+17:0:1456:65535,6:mss,sok,ts,nop,ws:df,id+:06
4:50+14:0:1456:65535,6:mss,sok,ts,nop,ws:df,id+:05
4:44+20:0:1456:65535,6:mss,sok,ts,nop,ws:df,id+:05
4:52+12:0:1456:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:45+19:0:1456:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:43+21:0:1456:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:42+22:0:1456:65535,6:mss,sok,ts,nop,ws:df,id+:02
4:48+16:0:1456:65535,6:mss,sok,ts,nop,ws:df,id+:02
4:46+18:0:1456:65535,6:mss,sok,ts,nop,ws:df,id+:02
4:36+28:0:1456:65535,6:mss,sok,ts,nop,ws:df,id+:02

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.44 Safari/537.362
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/120.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
UA · Ukraine14
VE · Venezuela10
RU · Russia5
AO · Angola3
CV · Cape Verde2
BR · Brazil1
KH · Cambodia1
KZ · Kazakhstan1
CO · Colombia1
CL · Chile1

Network (ASN)

fingerprintco-occurrences
AS61461 · Airtek Solutions C.A.6
AS37645 · Finstar - Sociedade de Investimento e Participacoes S.A3
AS6876 · TENET Scientific Production Enterprise LLC2
AS37517 · CABO VERDE TELECOM, S.A2
AS13188 · CONTENT DELIVERY NETWORK LTD1
AS27901 · Pacifico Cable SPA.1
AS264628 · CORPORACION FIBEX TELECOM, C.A.1
AS13489 · UNE EPM TELECOMUNICACIONES S.A.1
AS200590 · NLS Kazakhstan LLC1
AS21497 · PrJSC VF UKRAINE1