TCP SYN (JA4T)
65535_2-4-8-1-3_1380_9
first seen 2026-07-22 10:33 · last seen 2026-10-30 17:22 · JSON
Last 7 days (7 observations)
Distinct clients per day (last 30 days, peak 3/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 | 1380 |
| 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 |
|---|---|
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 9 |
t13d4312h1_c7886603b240_b26ce05bbdd6 | 7 |
t13d3113h2_e8f1e7e78f70_1b3407e2c936 | 6 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 6 |
t13d131100_f57a46bbacb6_ab7e3b40a677 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.5, go-net/http 1.26.4.The fingerprint page shows the full measured match list. More on the catalog. | 4 |
t13d4412h1_fd39b124ee10_58ed7828516f | 3 |
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 |
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. | 1 |
t13d1517h2_8daaf6152771_cb7bf5808d99 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 152.0.7977.83, chrome 154.0.8037.57, chrome 152.0.7977.64, +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. | 10 |
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 8 |
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. | 7 |
ge11nn14enus_4a2973d235de_000000000000_000000000000 | 7 |
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, +36 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
ge20nn13dede_0c2c1d640f3e_000000000000_000000000000 | 1 |
ge20nn14zhcn_8763d6297277_000000000000_000000000000 | 1 |
ge11nr16enus_3dfdba18536b_000000000000_000000000000 | 1 |
ge11nr16zhcn_3dfdba18536b_000000000000_000000000000 | 1 |
ge11nr17zhcn_021c223ca66c_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
3:100;4:33554432;2:0|33488897|0|m,p,s,a Match?Exact match in Thumbprint's published controlled catalog captures: php-curl 7.88.1, curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog. | 7 |
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, +57 more.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
RU · Russia | 7 |
MA · Morocco | 3 |
KE · Kenya | 3 |
NG · Nigeria | 3 |
AE · United Arab Emirates | 3 |
TN · Tunisia | 3 |
US · United States | 2 |
ZA · South Africa | 2 |
QA · Qatar | 2 |
DZ · Algeria | 2 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS35807 · SkyNet Ltd. | 3 |
AS36884 · Wana Corporate | 3 |
AS37693 · OOREDOO TUNISIE SA | 3 |
AS29465 · MTN NIGERIA Communication limited | 3 |
AS29226 · JSC Mastertel | 3 |
AS33771 · Safaricom Limited | 2 |
AS15802 · Emirates Integrated Telecommunications Company PJSC | 2 |
AS8781 · Ooredoo Q.S.C. | 2 |
AS327931 · Optimum Telecom Algeria | 2 |
AS701 · Verizon Business | 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. | 5 |
11ec,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 157.0.1, firefox-esr 153.5.1esr, firefox 158.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 4 |
0a0a,11ec,001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 155.0.8059.40, chrome 156.0.8078.73, chromium 156.0.8078.47, +8 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
0a0a,001d,0017,0018 | 1 |