TCP SYN (JA4T)

65535_2-4-8-1-3_1448_6

first seen 2026-07-20 06:21 · last seen 2026-09-11 18:02 · JSON

Last 7 days (2 observations)

Distinct clients per day (last 30 days, peak 10/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
MSS1448
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_58ed7828516f30
t13d1515h1_8daaf6152771_0a20fe35d3a525
t13d1515h1_8daaf6152771_de4a06bb82e313
t13d1516h1_8daaf6152771_1a63afa7c4783

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.30
ge11nn13enus_9db22d02e17a_000000000000_00000000000024
ge11nn14enus_4a2973d235de_000000000000_00000000000017

TCP SYN (p0f)

fingerprintco-occurrences
4:51+13:0:1448:65535,6:mss,sok,ts,nop,ws:df,id+:012
4:43+21:0:1448:65535,6:mss,sok,ts,nop,ws:df,id+:06
4:44+20:0:1448:65535,6:mss,sok,ts,nop,ws:df,id+:06
4:48+16:0:1448:65535,6:mss,sok,ts,nop,ws:df,id+:05
4:45+19:0:1448:65535,6:mss,sok,ts,nop,ws:df,id+:05
4:42+22:0:1448:65535,6:mss,sok,ts,nop,ws:df,id+:05
4:47+17:0:1448:65535,6:mss,sok,ts,nop,ws:df,id+:05
4:52+12:0:1448:65535,6:mss,sok,ts,nop,ws:df,id+:05
4:49+15:0:1448:65535,6:mss,sok,ts,nop,ws:df,id+:04
4:46+18:0:1448:65535,6:mss,sok,ts,nop,ws:df,id+:04

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/537.365
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.365
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.364
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.364
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.364
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.364
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.363

Country

fingerprintco-occurrences
VN · Vietnam25
PS · Palestinian Territories19
BR · Brazil15
MX · Mexico3
NI · Nicaragua2
ID · Indonesia1
RU · Russia1
AR · Argentina1
BD · Bangladesh1
KE · Kenya1

Network (ASN)

fingerprintco-occurrences
AS18403 · FPT Telecom Company24
AS12975 · PALTEL Autonomous System19
AS267340 · ONDATURBO LTDA - ME3
AS28509 · Cablemas Telecomunicaciones SA de CV2
AS263765 · XINWEI INTELCOM.NIC, S.A.2
AS264589 · AGRESTE LINK2
AS266608 · Ola Fibra Telecomunicacoes LTDA1
AS45899 · VNPT Corp1
AS11888 · Television Internacional, S.A. de C.V.1
AS268916 · Inffotreini Provedores e Informatica LTDA - ME1