TCP SYN (JA4T)
65535_2-4-8-1-3_1412_9
first seen 2026-07-03 04:07 · last seen 2026-09-15 12:39 · JSON
Last 7 days (4 observations)
Distinct clients per day (last 30 days, peak 10/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 | 9 |
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 | 64 |
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 32 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 27 |
t13d1516h2_8daaf6152771_e5627efa2ab1 | 2 |
t13d1512h2_8daaf6152771_ef7df7f74e48 | 2 |
t13d1513h2_8daaf6152771_eca864cca44a | 1 |
t13d431200_c7886603b240_d339722ba4af | 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 |
t13d1516h1_8daaf6152771_1a63afa7c478 | 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 |
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. | 65 |
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 38 |
ge11nn14enus_4a2973d235de_000000000000_000000000000 | 22 |
ge20nn12enus_60f823d07c94_000000000000_000000000000 | 2 |
ge20nn010000_379fadc6c8b7_000000000000_000000000000 | 2 |
ge20nn030000_80b089f68b8e_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 |
ge20nn14zhcn_80da16e8057b_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, +43 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
1:65536;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p | 2 |
1:65536;2:0;4:6291456;6:262144|15663105|1:0:0:256|m,a,s,p | 2 |
4:16777216|16711681|0|m,p,a,s | 1 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
PK · Pakistan | 55 |
ZA · South Africa | 13 |
NP · Nepal | 13 |
KE · Kenya | 7 |
CN · China | 6 |
MA · Morocco | 5 |
TG · Togo | 4 |
EG · Egypt | 3 |
BD · Bangladesh | 2 |
QA · Qatar | 2 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS9541 · Cyber Internet Services (Pvt) Ltd. | 16 |
AS17501 · WorldLink Communications Pvt Ltd | 7 |
AS17557 · Pakistan Telecommunication Company Limited | 6 |
AS33771 · Safaricom Limited | 5 |
AS36924 · GVA Cote d'Ivoire SAS | 5 |
AS138655 · Trans World Enterprise Services (Private) Limited | 5 |
AS9808 · China Mobile Communications Group Co., Ltd. | 4 |
AS37049 · SADV (Pty) Ltd | 4 |
AS20011 · Dimension Data | 3 |
AS139922 · DISH MEDIA NETWORK PUBLIC LIMITED | 3 |