TCP SYN (JA4T)
65535_2-1-3-1-1-8-4-0-0_1410_6
first seen 2026-07-02 06:03 · last seen 2026-10-24 18:15 · JSON
Distinct clients per day (last 30 days, peak 1/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 | 2-1-3-1-1-8-4-0-0 |
| MSS | 1410 |
| 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 |
|---|---|
t13d2013h2_a09f3c656075_7f0f34a4126d Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.6.2, safari 26.4, +2 more.The fingerprint page shows the full measured match list. More on the catalog. | 11 |
t13d4312h1_c7886603b240_b26ce05bbdd6 | 2 |
t13d1516h2_8daaf6152771_e5627efa2ab1 | 1 |
t13d3112h1_e8f1e7e78f70_8d633dac7124 Match?Exact match in Thumbprint's published controlled catalog captures: curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
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. | 1 |
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, +28 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. | 2 |
ge20nn08engb_b65a39d4559c_000000000000_000000000000 | 2 |
ge20nn05engb_730e0cd04a06_000000000000_000000000000 | 2 |
ge20nr09ru00_5ad46a65401a_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 |
ge20nr12engb_54b4638ab28b_000000000000_000000000000 | 1 |
ge20nn12enus_60f823d07c94_000000000000_000000000000 | 1 |
ge11nn030000_fe444ad14866_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0, curl 7.88.1, curl 8.21.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
ge20nr08engb_1945e0741196_000000000000_000000000000 | 1 |
ge20nr09engb_5ad46a65401a_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
2:0;3:100;4:2097152;9:1|10420225|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.6.2, safari 26.5, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 11 |
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, +85 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p | 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 |
|---|---|
ES · Spain | 4 |
PT · Portugal | 4 |
US · United States | 3 |
VN · Vietnam | 2 |
DE · Germany | 1 |
SG · Singapore | 1 |
TW · Taiwan | 1 |
DK · Denmark | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS2860 · NOS COMUNICACOES, S.A. | 4 |
AS12430 · VODAFONE ESPANA S.A.U. | 4 |
AS11351 · Charter Communications Inc | 3 |
AS7552 · Viettel Group | 2 |
AS3209 · Vodafone GmbH | 1 |
AS9158 · Telenor A/S | 1 |
AS45143 · SINGTEL MOBILE INTERNET SERVICE PROVIDER Singapore | 1 |
AS9674 · Far EastTone Telecommunication Co., Ltd. | 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. | 2 |
Cross-transport links
TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).
| fingerprint | linked observations |
|---|---|
q13d0311h3_55b375c5d22e_f2a83c8e78ae | 2 |
q13d0311h3_55b375c5d22e_653d80c3fe9d | 1 |