TCP SYN (JA4T)
65535_2-4-8-1-3_1370_6
first seen 2026-07-23 20:42 · last seen 2026-09-09 22:46 · JSON
Last 7 days (1 observations)
Distinct clients per day (last 30 days, peak 2/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 | 1370 |
| 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 |
|---|---|
t13d4412h1_fd39b124ee10_58ed7828516f | 3 |
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. | 3 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 3 |
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 |
t13d1516h1_8daaf6152771_1a63afa7c478 | 1 |
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 4 |
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. | 3 |
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.18.0, +9 more.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
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. | 3 |
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 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 4 |
BR · Brazil | 4 |
MX · Mexico | 1 |
IN · India | 1 |
TR · Turkey | 1 |
AR · Argentina | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS7018 · AT&T Enterprises, LLC | 3 |
AS264381 · VIBE PROVEDOR DE INTERNET LTDA | 3 |
AS55836 · Reliance Jio Infocomm Limited | 1 |
AS21928 · T-Mobile USA, Inc. | 1 |
AS20978 · TT Mobil Iletisim Hizmetleri A.S | 1 |
AS7438 · PEGASO PCS | 1 |
AS271922 · LEIRIA HUGO LEANDRO (GEO FIBER) | 1 |
AS4230 · CLARO S.A. | 1 |