TCP SYN (JA4T)
64240_2-4-8-1-3_1460_6
first seen 2026-07-02 00:05 · last seen 2026-10-24 18:32 · JSON
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 | 64240 |
|---|---|
| Option kinds | 2-4-8-1-3 |
| MSS | 1460 |
| 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 |
t13d531000_ed6c8d7875f9_518fb456ca59 | 15 |
t13i170900_5b57614c22b0_78e6aca7449b | 4 |
t13d4907h2_0d8feac7bc37_7395dae3b2f3 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
t13d3013h2_1d37bd780c83_8537cf56674e Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.18.0.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
t13d1517h2_8daaf6152771_cb7bf5808d99 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 152.0.7977.83, chrome 156.0.8078.48, chrome 154.0.8037.57, +27 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
t13d4412h1_fd39b124ee10_89b78339ac4c | 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. | 16 |
ge11nn06enus_936fae08049d_000000000000_000000000000 | 9 |
ge11nr06enus_936fae08049d_000000000000_000000000000 | 6 |
ge20nn030000_bf75ddd0bb29_000000000000_000000000000 | 2 |
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.13.0, +11 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
ge20nn13zhcn_9519c2577190_000000000000_000000000000 | 1 |
ge20nn030000_e057572924c3_000000000000_000000000000 | 1 |
ge20nn14zhcn_00c893c2b404_000000000000_000000000000 | 1 |
ge11nn070000_ca40d4d1460e_000000000000_000000000000 | 1 |
ge11nn050000_889622e8388c_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
3:100;4:65536;2:0|1048510465|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, curl 8.18.0, curl 8.21.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
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, +60 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
3:100;4:10485760;2:0|1048510465|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 19 |
FR · France | 10 |
VN · Vietnam | 4 |
HK · Hong Kong SAR China | 3 |
RU · Russia | 2 |
KR · South Korea | 1 |
BG · Bulgaria | 1 |
GB · United Kingdom | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS16509 · Amazon.com, Inc. | 17 |
AS3215 · Orange S.A. | 6 |
AS150895 · EZ TECHNOLOGY COMPANY LIMITED | 4 |
AS12322 · Free SAS | 3 |
AS51659 · LLC Baxet | 2 |
AS12198 · JSMSR Network | 2 |
AS62240 · Clouvider | 1 |
AS7018 · AT&T Enterprises, LLC | 1 |
AS7922 · Comcast Cable Communications, LLC | 1 |
AS15557 · Societe Francaise Du Radiotelephone - SFR SA | 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. | 14 |
0a0a,11ec,001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 156.0.8078.48, edge 155.0.4283.62, chrome 156.0.8078.47, +11 more.The fingerprint page shows the full measured match list. More on the catalog. | 6 |
001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13, curl 8.7.1.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
11ec,001d,0017,001e,0018,0019,0100,0101 Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1, python-requests 2.34.2, curl 8.23.0, +4 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |