TCP SYN (JA4T)
64952_2-4-8-1-3_1412_7
first seen 2026-07-03 07:29 · last seen 2026-11-01 15:47 · JSON
Last 7 days (9 observations)
Distinct clients per day (last 30 days, peak 17/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 | 64952 |
|---|---|
| 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 |
|---|---|
t13d191000_9dc949149365_e7c285222651 | 80 |
t13d251000_b78ed14e2fd0_e7c285222651 | 65 |
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. | 48 |
t13i170900_5b57614c22b0_78e6aca7449b | 16 |
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. | 15 |
t13d1911h2_9dc949149365_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13.The fingerprint page shows the full measured match list. More on the catalog. | 10 |
t13d1812h1_85036bcba153_b26ce05bbdd6 | 9 |
t12d290700_fc2078a0b8c0_8c06664c3ac5 | 3 |
t13d2013h1_2b729b4bf6f3_e24568c0d440 | 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 |
HTTP request (JA4H)
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. | 15 |
2:0;4:4194304;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13, go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog. | 10 |
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. | 1 |
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. | 1 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 90 |
HK · Hong Kong SAR China | 62 |
TH · Thailand | 24 |
CN · China | 20 |
JP · Japan | 15 |
SG · Singapore | 8 |
GB · United Kingdom | 7 |
RU · Russia | 6 |
DE · Germany | 5 |
TW · Taiwan | 5 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS135377 · UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | 205 |
AS63473 · HostHatch, LLC | 14 |
AS23724 · IDC, China Telecommunications Corporation | 10 |
AS58466 · CHINANET Guangdong province network | 10 |
AS6939 · Hurricane Electric LLC | 3 |
AS2914 · NTT America, Inc. | 3 |
AS142002 · Scloud Pte Ltd | 3 |
AS7018 · AT&T Enterprises, LLC | 1 |
AS8708 · DIGI ROMANIA S.A. | 1 |
TLS supported groups
| fingerprint | co-occurrences |
|---|---|
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. | 15 |
11ec,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 158.0.1, firefox 157.0, firefox 157.0.1, +5 more.The fingerprint page shows the full measured match list. More on the catalog. | 14 |
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 |
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. | 4 |
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, winhttp 10.0.20348.1, +2 more.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
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. | 3 |