TCP SYN (JA4T)
64240_2-4-8-1-3_1420_1
first seen 2026-08-19 12:39 · last seen 2026-09-10 03:14 · JSON
Last 7 days (1 observations)
Distinct clients per day (last 30 days, peak 3/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 window | 64240 |
|---|---|
| Option kinds | 2-4-8-1-3 |
| MSS | 1420 |
| Window scale | 1 |
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)
| fingerprint | co-occurrences |
|---|---|
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 5 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 5 |
t13d1517h2_8daaf6152771_b1ff8ab2d16f | 1 |
t13d1516h2_8daaf6152771_d8a2da3f94cd Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
HTTP request (JA4H)
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +43 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 149.0.7827.102, +59 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
BR · Brazil | 6 |
PE · Peru | 3 |
IN · India | 2 |
SA · Saudi Arabia | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS270068 · DESARROLLO DE INFRAESTRUCTURA DE TELECOMUNICACIONES PERU S.A.C. (INFRATEL) | 3 |
AS25019 · Saudi Telecom Company JSC | 1 |
AS9829 · National Internet Backbone | 1 |
AS268872 · ELIAS F PINTO COMUNICAÇÕES LTDA - ME | 1 |
AS269462 · FIBRANETBR TECNOLOGIA LTDA | 1 |
AS52872 · Voafibra Comunicacao | 1 |
AS274798 · 1 CLICK TELECOM LTDA | 1 |
AS262573 · GILMAR DOS SANTOS & CIA. LTDA. | 1 |
AS268479 · Antonio Marcos dos Santos-ME | 1 |
AS134913 · JETWAY BROADBAND INDIA PVT LTD | 1 |