TCP SYN (JA4T)
64240_2-1-1-4-1-3_1460_9
first seen 2026-07-01 16:33 · last seen 2026-09-14 17:11 · JSON
Last 7 days (1 observations)
Distinct clients per day (last 30 days, peak 15/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 | 64240 |
|---|---|
| Option kinds | 2-1-1-4-1-3 |
| MSS | 1460 |
| 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 |
|---|---|
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. | 58 |
t13d1512h2_8daaf6152771_cbb9361b6bf9 | 10 |
t13d1715h2_5b57614c22b0_a54fffd0eb61 | 7 |
t13d1516h2_8daaf6152771_e5627efa2ab1 | 6 |
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. | 3 |
t13d1310h2_081ac75c68c9_560390466015 | 2 |
t13d1410h2_15c1305fa4d5_560390466015 | 2 |
t13d1510h2_8daaf6152771_560390466015 | 2 |
t13d0910h2_dd0315a7a350_560390466015 | 2 |
t13d1410h2_8e2606995da7_560390466015 | 2 |
HTTP request (JA4H)
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
1:65536;2:0;4:6291456;6:262144;4:1048576|15663105|1:0:0:256|m,a,s,p | 139 |
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 149.0.7827.102, +59 more.The fingerprint page shows the full measured match list. More on the catalog. | 15 |
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. | 13 |
1:65536;2:0;4:6291456;6:262144|15663105|3:1:1:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.128, chrome 150.0.7871.115, chrome 151.0.7922.174, +7 more.The fingerprint page shows the full measured match list. More on the catalog. | 9 |
1:65536;2:0;4:6291456;6:262144|15663105|5:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 133.0.6943.16, chrome 150.0.7871.128, chromium 148.0.7778.96, +2 more.The fingerprint page shows the full measured match list. More on the catalog. | 6 |
1:65536;2:0;4:6291456;6:262144|15663105|3:1:0:256|m,a,s,p | 5 |
1:65536;2:0;4:6291456;6:262144|15663105|7:1:5:220|m,a,s,p | 4 |
1:65536;2:0;4:6291456;6:262144|15663105|11:1:9:220|m,a,s,p | 3 |
1:65536;2:0;4:6291456;6:262144|15663105|9:1:0:220|m,a,s,p | 3 |
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p | 3 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
AT · Austria | 158 |
SG · Singapore | 54 |
DE · Germany | 3 |
US · United States | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS208323 · Foundation for Applied Privacy | 158 |
AS213476 · Litlink UAB | 54 |
AS216050 · Lietparkas UAB | 3 |
AS215294 · Lumina broadband UAB | 1 |