TCP SYN (JA4T)
65535_2-4-8-1-3_1384_6
first seen 2026-07-22 05:41 · last seen 2026-10-27 19:06 · 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 | 65535 |
|---|---|
| Option kinds | 2-4-8-1-3 |
| MSS | 1384 |
| 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 |
|---|---|
t13d4312h1_c7886603b240_b26ce05bbdd6 | 15 |
t13d4412h1_fd39b124ee10_58ed7828516f | 7 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 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 |
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 1 |
t13d1516h1_8daaf6152771_1a63afa7c478 | 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. | 22 |
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 4 |
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 |
ge11nn14enus_4a2973d235de_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. | 1 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
KE · Kenya | 10 |
SA · Saudi Arabia | 5 |
MX · Mexico | 4 |
CL · Chile | 3 |
MA · Morocco | 2 |
PR · Puerto Rico | 2 |
AU · Australia | 1 |
BR · Brazil | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS36926 · Airtel Networks Kenya Limited | 10 |
AS39891 · Saudi Telecom Company JSC | 5 |
AS28403 · RadioMovil Dipsa, S.A. de C.V. | 4 |
AS6535 · Telmex Servicios Empresariales S.A. | 3 |
AS14638 · Liberty Communications of Puerto Rico LLC | 2 |
AS36903 · Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM | 1 |
AS268976 · Weclix Telecom S/A | 1 |
AS6713 · Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM | 1 |
AS1221 · Telstra Limited | 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. | 11 |
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. | 1 |