TCP SYN (JA4T)
32120_2-4-8-1-3_1460_7
first seen 2026-06-30 09:18 · last seen 2026-10-23 22:44 · JSON
Distinct clients per day (last 30 days, peak 18/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 | 32120 |
|---|---|
| Option kinds | 2-4-8-1-3 |
| MSS | 1460 |
| 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 |
|---|---|
t13d131100_f57a46bbacb6_e5728521abd4 | 91 |
t13d3013h2_1d37bd780c83_8537cf56674e | 17 |
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. | 10 |
t13d190900_9dc949149365_97f8aa674fd9 | 10 |
t13i170900_5b57614c22b0_78e6aca7449b | 6 |
t13d1517h2_8daaf6152771_dcad5a053991 | 5 |
t13d4312h1_c7886603b240_b26ce05bbdd6 | 3 |
t13i1909h2_9dc949149365_97f8aa674fd9 | 2 |
t13d1812h1_85036bcba153_b26ce05bbdd6 | 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. | 2 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge11nn10zhcn_9c0cf7475f83_000000000000_000000000000 | 57 |
ge11nr10zhcn_9c0cf7475f83_000000000000_000000000000 | 33 |
ge20nn030000_bf75ddd0bb29_000000000000_000000000000 | 17 |
ge11nn050000_57c5e92682a8_000000000000_000000000000 | 10 |
ge11nr030000_cd680697de12_000000000000_000000000000 | 6 |
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. | 5 |
ge11nr040000_8391bea91fb6_000000000000_000000000000 | 4 |
ge20nr12zhcn_54b4638ab28b_000000000000_000000000000 | 4 |
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. | 2 |
ge20nr030000_80b089f68b8e_000000000000_000000000000 | 2 |
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. | 17 |
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. | 2 |
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 152.0.7977.83, +81 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
2:0;4:4194304;5:16384;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.10, go-net/http 1.26.9, +8 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 |
1:65536;2:0;4:6291456;6:262144|15663105|3:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 151.0.7922.34, chromium 147.0.7727.15, chromium 145.0.7632.6, +26 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
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 156.0.8078.48, chrome 150.0.7871.128, +3 more.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 | 83 |
CN · China | 17 |
RO · Romania | 11 |
NL · Netherlands | 10 |
HK · Hong Kong SAR China | 5 |
FR · France | 4 |
VN · Vietnam | 4 |
BG · Bulgaria | 3 |
AU · Australia | 2 |
SG · Singapore | 2 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS45102 · Alibaba (US) Technology Co., Ltd. | 73 |
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd. | 17 |
AS47890 · UNMANAGED LTD | 10 |
AS16276 · OVH SAS | 6 |
AS211486 · Alferov Aleksey Aleksandrovich | 6 |
AS4760 · HKT Limited | 5 |
AS215311 · Regxa Company for Information Technology Ltd | 5 |
AS150862 · VPSTTT COMPUTER COMPANY LIMITED | 4 |
AS51167 · Contabo GmbH | 3 |
AS36352 · HostPapa | 3 |
TLS supported groups
| fingerprint | co-occurrences |
|---|---|
11ec,001d,0017,001e,0018,0019,0100,0101 Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.22.1, python-httpx 0.28.1, python-requests 2.34.2, +2 more.The fingerprint page shows the full measured match list. More on the catalog. | 17 |
001d,0017,0018,0019 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. | 2 |
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: php-guzzle 8.3.1, curl 7.88.1, curl 8.13.0, +10 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
6399,001d,0017,0018,0019 | 1 |