TCP SYN (JA4T)
65535_2-4-8-1-3_1388_6
first seen 2026-07-21 12:01 · last seen 2026-10-30 18:42 · JSON
Last 7 days (6 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 | 65535 |
|---|---|
| Option kinds | 2-4-8-1-3 |
| MSS | 1388 |
| Window scale | 6 |
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 |
|---|---|
t13d3112h2_e8f1e7e78f70_b26ce05bbdd6 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.5.0, php-curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog. | 15 |
t13d4312h1_c7886603b240_b26ce05bbdd6 | 13 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 7 |
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 5 |
t13d4412h1_fd39b124ee10_58ed7828516f | 3 |
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 |
t13d1516h2_8daaf6152771_02713d6af862 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 134.0.6998.35, chromium 133.0.6943.16.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
t13d4907h2_0d8feac7bc37_7395dae3b2f3 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
t13d1517h2_8daaf6152771_b1ff8ab2d16f | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.13.0, +11 more.The fingerprint page shows the full measured match list. More on the catalog. | 16 |
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 |
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 11 |
ge20nn12enus_60f823d07c94_000000000000_000000000000 | 1 |
ge20nn13enus_0c2c1d640f3e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 151.0.7922.137, chrome 151.0.7922.170, chrome 151.0.7922.108, +36 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
ge20nr13enus_e2ac93ffb364_000000000000_000000000000 | 1 |
ge11nn14enus_4a2973d235de_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
3:100;4:10485760;2:0|1048510465|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0.The fingerprint page shows the full measured match list. More on the catalog. | 16 |
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, +57 more.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 31 |
BR · Brazil | 6 |
PH · Philippines | 2 |
AZ · Azerbaijan | 2 |
CO · Colombia | 1 |
CL · Chile | 1 |
UY · Uruguay | 1 |
AM · Armenia | 1 |
DO · Dominican Republic | 1 |
MZ · Mozambique | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS6167 · Verizon Business | 30 |
AS272436 · TERCIO FELIPE LOURENCO PEREIRA | 3 |
AS28126 · BRISANET SERVICOS DE TELECOMUNICACOES S.A | 2 |
AS4775 · Globe Telecoms | 2 |
AS196961 · Teleport LLC | 2 |
AS28573 · Claro NXT Telecomunicacoes Ltda | 1 |
AS21928 · T-Mobile USA, Inc. | 1 |
AS27901 · Pacifico Cable SPA. | 1 |
AS6057 · Administracion Nacional de Telecomunicaciones | 1 |
AS6400 · Compañía Dominicana de Teléfonos S. A. | 1 |
TLS supported groups
| fingerprint | co-occurrences |
|---|---|
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, php-guzzle 8.3.1, curl 7.88.1, +10 more.The fingerprint page shows the full measured match list. More on the catalog. | 12 |
0a0a,001d,0017,0018 | 1 |
001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13.The fingerprint page shows the full measured match list. More on the catalog. | 1 |