TCP SYN (JA4T)
64240_2-1-1-4-1-3_1460_9
first seen 2026-07-01 16:33 · last seen 2026-11-01 07:51 · JSON
Last 7 days (1 observations)
Distinct clients per day (last 30 days, peak 7/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 | 2-1-1-4-1-3 |
| MSS | 1460 |
| 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 |
|---|---|
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. | 60 |
t13d1512h2_8daaf6152771_cbb9361b6bf9 | 13 |
t13d4312h1_c7886603b240_b26ce05bbdd6 | 8 |
t13d1715h2_5b57614c22b0_a54fffd0eb61 | 7 |
t13d1516h2_8daaf6152771_e5627efa2ab1 | 7 |
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. | 4 |
t13d1510h2_8daaf6152771_560390466015 | 4 |
t13d1410h2_c284ddd5f53f_560390466015 | 3 |
t13d1717h2_5b57614c22b0_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 148.0.2, firefox 144.0.2, firefox 142.0.1, +6 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
t13d1513h2_8daaf6152771_748f4c70de1c | 2 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nn04enus_989c7cc05c9b_000000000000_000000000000 | 173 |
ge20nr12enus_54b4638ab28b_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 152.0.7977.83, chrome 151.0.7922.137, +61 more.The fingerprint page shows the full measured match list. More on the catalog. | 40 |
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, +39 more.The fingerprint page shows the full measured match list. More on the catalog. | 16 |
ge20nn12enus_60f823d07c94_000000000000_000000000000 | 9 |
ge20nr12enus_a72b71f519fc_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. | 6 |
ge20nn12enus_a72b71f519fc_000000000000_000000000000 | 3 |
ge20nn11enus_3901d4197baf_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 153.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
ge20nr130000_8b0ff7948a7d_000000000000_000000000000 | 2 |
ge11nr07*000_ac4db679fb33_000000000000_000000000000 | 2 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
1:65536;2:0;4:6291456;6:262144;4:1048576|15663105|1:0:0:256|m,a,s,p | 173 |
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. | 16 |
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. | 15 |
1:65536;2:0;4:6291456;6:262144|15663105|3:1:1:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.128, chrome 150.0.7871.115, chrome 154.0.8037.58, +8 more.The fingerprint page shows the full measured match list. More on the catalog. | 9 |
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. | 6 |
1:65536;2:0;4:6291456;6:262144|15663105|3:1:0:256|m,a,s,p | 5 |
1:65536;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p | 4 |
1:65536;2:0;4:6291456;6:262144|15663105|7:1:5:220|m,a,s,p | 4 |
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p | 3 |
1:65536;2:0;4:6291456;6:262144|15663105|9:1:0:220|m,a,s,p | 3 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
AT · Austria | 200 |
SG · Singapore | 55 |
US · United States | 6 |
DE · Germany | 3 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS208323 · Foundation for Applied Privacy | 199 |
AS213476 · Litlink UAB | 54 |
AS400072 · THUNDERBOX INC | 5 |
AS216050 · Lietparkas UAB | 3 |
AS215294 · Lumina broadband UAB | 2 |
AS13022 · Streams Telecommunicationsservices GmbH | 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. | 6 |
001d,0017,001e,0019,0018 | 1 |
0a0a,001d,0017,0018 | 1 |