TCP SYN (JA4T)
65535_2-4-8-1-3_1412_10
first seen 2026-07-06 10:34 · last seen 2026-09-15 05:12 · JSON
Last 7 days (3 observations)
Distinct clients per day (last 30 days, peak 19/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 | 1412 |
| Window scale | 10 |
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 | 168 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 58 |
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 47 |
t13d1516h1_8daaf6152771_1a63afa7c478 | 10 |
t13d491200_bd868743f55c_7c76daad20ec | 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 |
t13d1516h2_8daaf6152771_806a8c22fdea Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 151.0.7922.137, chromium 151.0.7922.34, +24 more.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. | 168 |
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 87 |
ge11nn14enus_4a2973d235de_000000000000_000000000000 | 28 |
ge11nn040000_c41ada48459b_000000000000_000000000000 | 1 |
ge20nn15enus_28e542058e45_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, +23 more.The fingerprint page shows the full measured match list. More on the catalog. | 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, +43 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
ZA · South Africa | 95 |
PK · Pakistan | 65 |
KE · Kenya | 50 |
NP · Nepal | 16 |
TG · Togo | 7 |
MA · Morocco | 6 |
EG · Egypt | 6 |
CI · Côte d’Ivoire | 5 |
MU · Mauritius | 4 |
AE · United Arab Emirates | 3 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS33771 · Safaricom Limited | 31 |
AS20011 · Dimension Data | 22 |
AS9541 · Cyber Internet Services (Pvt) Ltd. | 20 |
AS37611 · AFRIHOST SP (PTY) LTD | 19 |
AS36924 · GVA Cote d'Ivoire SAS | 13 |
AS17557 · Pakistan Telecommunication Company Limited | 10 |
AS36994 · Vodacom | 10 |
AS37049 · SADV (Pty) Ltd | 9 |
AS328961 · NET99 (PTY) LTD | 8 |
AS11845 · Vox Telecom Ltd | 7 |