TCP SYN (JA4T)
65535_2-4-8-1-3_1460_12
first seen 2026-06-30 01:51 · last seen 2026-10-31 17:46 · JSON
Last 7 days (7 observations)
Distinct clients per day (last 30 days, peak 77/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 | 1460 |
| Window scale | 12 |
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 |
|---|---|
t13d351300_bfa337485184_c266ffd845cb | 255 |
t13d3013h2_1d37bd780c83_8537cf56674e | 89 |
t13d1312h1_f57a46bbacb6_ab7e3b40a677 | 7 |
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. | 3 |
t13d4312h1_c7886603b240_b26ce05bbdd6 | 2 |
t12d290700_fc2078a0b8c0_8c06664c3ac5 | 2 |
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. | 1 |
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 |
t13d2013h1_2b729b4bf6f3_e24568c0d440 | 1 |
t13d160900_1711a4c0508c_c06d14d7e8f6 | 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. | 257 |
ge20nn030000_bf75ddd0bb29_000000000000_000000000000 | 89 |
ge11nr05enus_900748f1e0f3_000000000000_000000000000 | 6 |
ge11nr040000_e1d2031bdfea_000000000000_000000000000 | 2 |
ge11nr030000_cd680697de12_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 |
ge11nn040000_bfa5a9b89dd6_000000000000_000000000000 | 1 |
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 |
ge11nr15engb_fb9994e70428_000000000000_000000000000 | 1 |
ge11nn030000_dd98166e0881_000000000000_000000000000 | 1 |
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. | 89 |
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. | 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 |
|---|---|
FR · France | 256 |
DE · Germany | 89 |
US · United States | 10 |
NL · Netherlands | 3 |
HU · Hungary | 2 |
AU · Australia | 1 |
CA · Canada | 1 |
CN · China | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS16276 · OVH SAS | 255 |
AS138997 · Eons Data Communications Limited | 85 |
AS142430 · DIGI VPS | 9 |
AS216253 · Interhive OU | 3 |
AS211619 · MAXKO d.o.o. | 2 |
AS3209 · Vodafone GmbH | 2 |
AS6128 · Cablevision Systems Corp. | 1 |
AS9983 · Australian Bureau of Statistics. | 1 |
AS395965 · Carrytel | 1 |
AS38365 · Beijing Baidu Netcom Science and Technology Co., Ltd. | 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: 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. | 89 |
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. | 7 |
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 |