TCP SYN (JA4T)

65535_2-4-8-1-3_1460_4

first seen 2026-07-19 02:34 · last seen 2026-10-26 16:08 · JSON

Last 7 days (6 observations)

Distinct clients per day (last 30 days, peak 61/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 window65535
Option kinds2-4-8-1-3
MSS1460
Window scale4

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)

fingerprintco-occurrences
t13d2013h1_2b729b4bf6f3_e24568c0d440677
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.385
t13d3013h2_1d37bd780c83_8537cf56674e77
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.48
t13d1517h2_8daaf6152771_cb7bf5808d99 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 152.0.7977.83, chrome 154.0.8037.57, chrome 152.0.7977.64, +24 more.The fingerprint page shows the full measured match list. More on the catalog.3
t13d1518h2_8daaf6152771_4980c97edce03
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.2
t13d1515h1_8daaf6152771_de4a06bb82e31

HTTP request (JA4H)

fingerprintco-occurrences
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.677
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.462
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, +58 more.The fingerprint page shows the full measured match list. More on the catalog.34
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.11
ge20nr13enus_0c2c1d640f3e_000000000000_0000000000004
ge20nr09enus_d05bf764aa1e_000000000000_0000000000002
ge20nr13enus_9519c2577190_000000000000_0000000000002
ge11nn13enus_9db22d02e17a_000000000000_0000000000001
ge20nn10enus_f7ad313dcc59_000000000000_0000000000001
ge20nr14enus_00c893c2b404_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
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.385
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.77
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.20
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.18
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.8
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.8
1:65536;2:0;4:6291456;6:262144|15663105|3:1:0:256|m,a,s,p2

TCP SYN (p0f)

fingerprintco-occurrences
4:51+13:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0206
4:52+12:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0187
4:50+14:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0178
4:49+15:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0135
4:48+16:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0115
4:53+11:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:0107
4:47+17:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:086
4:46+18:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:066
4:54+10:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:044
4:55+9:0:1460:65535,4:mss,sok,ts,nop,ws:df,id+:016

User-Agent

fingerprintco-occurrences
curl/8.21.0677
curl/8.5.0385
curl/8.14.177
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.3648
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/154.0.0.0 Safari/537.363
Mozilla/5.0 (iPhone; CPU iPhone OS 26_0_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/154.0.8037.41 Mobile/15E148 Safari/604.13
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
US · United States1193
CN · China2
DE · Germany1

Network (ASN)

fingerprintco-occurrences
AS7922 · Comcast Cable Communications, LLC333
AS7018 · AT&T Enterprises, LLC184
AS5650 · Verizon Business79
AS20115 · Charter Communications LLC55
AS701 · Verizon Business51
AS14593 · Space Exploration Technologies Corporation38
AS16591 · Google Fiber Inc.28
AS10796 · Charter Communications Inc28
AS11427 · Charter Communications Inc20
AS33363 · Charter Communications, Inc20

TLS supported groups

fingerprintco-occurrences
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.6