TCP SYN (p0f)

4:38+26:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-13 20:37 · last seen 2026-09-09 21:24 · JSON

Last 7 days (1 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

IP version4
Initial TTL38+26
Options length0
MSS1460
Window size65535
Window scale6
Options layoutmss,sok,ts,nop,ws
Quirksdf,id+
Payload class0

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_58ed7828516f15
t13d1515h1_8daaf6152771_de4a06bb82e311
t13d1515h1_8daaf6152771_0a20fe35d3a510
t13d491200_bd868743f55c_7c76daad20ec1

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.15
ge11nn13enus_9db22d02e17a_000000000000_00000000000014
ge11nn14enus_4a2973d235de_000000000000_0000000000007
ge11nn13zhcn_a6e3cced9a2c_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1460_637

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.364
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 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 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:125.0) Gecko/20100101 Firefox/125.01
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
IL · Israel12
VE · Venezuela6
AR · Argentina5
BR · Brazil4
CO · Colombia3
MX · Mexico2
RU · Russia2
UZ · Uzbekistan2
LY · Libya1

Network (ASN)

fingerprintco-occurrences
AS12849 · Hot-Net internet services Ltd.12
AS264628 · CORPORACION FIBEX TELECOM, C.A.4
AS28126 · BRISANET SERVICOS DE TELECOMUNICACOES S.A3
AS59668 · Turon Media XK2
AS271957 · SOMOS NETWORKS COLOMBIA S.A.S. BIC2
AS27813 · Teledifusora S.A.2
AS14593 · Space Exploration Technologies Corporation1
AS13999 · Mega Cable, S.A. de C.V.1
AS28548 · Cablevisión, S.A. de C.V.1
AS13489 · UNE EPM TELECOMUNICACIONES S.A.1