TCP SYN (JA4T)
64240_2-4-8-1-3_1412_7
first seen 2026-06-30 18:46 · last seen 2026-09-15 04:25 · JSON
Last 7 days (12 observations)
Distinct clients per day (last 30 days, peak 78/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 | 1412 |
| Window scale | 7 |
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 | 606 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 191 |
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 181 |
t13d1516h1_8daaf6152771_1a63afa7c478 | 26 |
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. | 15 |
t13d131000_f57a46bbacb6_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog. | 14 |
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. | 5 |
t13d2013h1_2b729b4bf6f3_e24568c0d440 | 3 |
t13d3112h2_e8f1e7e78f70_b26ce05bbdd6 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.5.0, php-curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
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. | 2 |
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. | 606 |
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 287 |
ge11nn14enus_4a2973d235de_000000000000_000000000000 | 111 |
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. | 15 |
ge11nr050000_3658ef221638_000000000000_000000000000 | 14 |
ge20nr13enus_e2ac93ffb364_000000000000_000000000000 | 5 |
ge11nn030000_fe444ad14866_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.18.0, +9 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
ge11nn06ja00_fb4afd1f380a_000000000000_000000000000 | 1 |
ge11nn040000_66d37a417839_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. | 22 |
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 |
|---|---|
BR · Brazil | 221 |
EC · Ecuador | 98 |
AR · Argentina | 96 |
CL · Chile | 68 |
MX · Mexico | 67 |
CO · Colombia | 40 |
VN · Vietnam | 29 |
VE · Venezuela | 29 |
DE · Germany | 27 |
ZA · South Africa | 25 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS7552 · Viettel Group | 27 |
AS8151 · Uninet S.A. de C.V. | 26 |
AS11664 · Techtel LMDS Comunicaciones Interactivas S.A. | 25 |
AS36947 · Telecom Algeria | 25 |
AS27947 · Telconet S.A | 24 |
AS17072 · TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. DE C.V. | 23 |
AS27651 · ENTEL CHILE S.A. | 23 |
AS7738 · V tal | 17 |
AS8193 · Uzbektelekom Joint Stock Company | 17 |
AS3209 · Vodafone GmbH | 16 |