TCP SYN (JA4T)
65535_2-4-8-1-3_1456_6
first seen 2026-07-20 19:47 · last seen 2026-10-30 18:31 · JSON
Last 7 days (4 observations)
Distinct clients per day (last 30 days, peak 4/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 | 1456 |
| 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 |
|---|---|
t13d1515h1_8daaf6152771_de4a06bb82e3 | 17 |
t13d4412h1_fd39b124ee10_58ed7828516f | 16 |
t13d4312h1_c7886603b240_b26ce05bbdd6 | 12 |
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 11 |
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. | 2 |
t13d1516h1_8daaf6152771_1a63afa7c478 | 2 |
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 |
HTTP request (JA4H)
| fingerprint | co-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. | 28 |
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 24 |
ge11nn14enus_4a2973d235de_000000000000_000000000000 | 6 |
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. | 2 |
ge20nr13enus_e2ac93ffb364_000000000000_000000000000 | 1 |
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, +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 |
|---|---|
UA · Ukraine | 18 |
VE · Venezuela | 17 |
RU · Russia | 6 |
AO · Angola | 4 |
KZ · Kazakhstan | 3 |
CV · Cape Verde | 3 |
PA · Panama | 2 |
BR · Brazil | 1 |
FR · France | 1 |
TW · Taiwan | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS61461 · Airtek Solutions C.A. | 9 |
AS37645 · Finstar - Sociedade de Investimento e Participacoes S.A | 4 |
AS37517 · CABO VERDE TELECOM, S.A | 3 |
AS21826 · Corporación Telemic C.A. | 2 |
AS272809 · THUNDERNET, C.A. | 2 |
AS6876 · TENET Scientific Production Enterprise LLC | 2 |
AS3215 · Orange S.A. | 1 |
AS3462 · Data Communication Business Group | 1 |
AS13188 · CONTENT DELIVERY NETWORK LTD | 1 |
AS18809 · Cable Onda | 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. | 9 |
0a0a,001d,0017,0018 | 3 |
0a0a,11ec,001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 155.0.8059.40, chrome 156.0.8078.73, chromium 156.0.8078.47, +8 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |