TCP SYN (JA4T)

64440_2-1-3-1-1-4_1432_8

first seen 2026-07-03 12:34 · last seen 2026-10-30 21:55 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 6/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 window64440
Option kinds2-1-3-1-1-4
MSS1432
Window scale8

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
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.10
t12d190800_d83cc789557e_7af1ed941c264
t13d1812h1_85036bcba153_b26ce05bbdd62
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
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
t13d1312h2_f57a46bbacb6_ab7e3b40a677 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, +7 more.The fingerprint page shows the full measured match list. More on the catalog.1
t13d201100_2b729b4bf6f3_9e7b989ebec81

HTTP request (JA4H)

fingerprintco-occurrences
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.12
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
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
po11nn07enus_7d361e250c48_000000000000_0000000000002
po11nn07enin_7d361e250c48_000000000000_0000000000001
po11nn07ptbr_7d361e250c48_000000000000_0000000000001
po11nn07trtr_7d361e250c48_000000000000_0000000000001
ge20nn13enus_4681660d051e_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
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.12
3:100;4:33554432;2:0|33488897|0|m,p,s,a Match?Exact match in Thumbprint's published controlled catalog captures: php-curl 7.88.1, curl 7.88.1.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.1

TCP SYN (p0f)

fingerprintco-occurrences
6:47+17:0:1432:mss*45,8:mss,nop,ws,nop,nop,sok:flow:04
6:55+9:0:1432:mss*45,8:mss,nop,ws,nop,nop,sok:flow:04
6:52+12:0:1432:mss*45,8:mss,nop,ws,nop,nop,sok:flow:03
6:46+18:0:1432:mss*45,8:mss,nop,ws,nop,nop,sok:flow:02
6:242+13:0:1432:mss*45,8:mss,nop,ws,nop,nop,sok:flow:02
6:44+20:0:1432:mss*45,8:mss,nop,ws,nop,nop,sok:flow:01
6:43+21:0:1432:mss*45,8:mss,nop,ws,nop,nop,sok:flow:01
6:42+22:0:1432:mss*45,8:mss,nop,ws,nop,nop,sok:flow:01
6:56+8:0:1432:mss*45,8:mss,nop,ws,nop,nop,sok:flow:01
6:45+19:0:1432:mss*45,8:mss,nop,ws,nop,nop,sok:flow:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.3611
python-requests/2.34.22
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
curl/7.88.12
WordPress.com; https://wordpress.com1
Mozilla/5.0 (Windows NT 10.0; x86) AppleWebKit/537.36 (KHTML, like Gecko) Firefox/95.0.0.0 Safari/537.361
Jetpack by WordPress.com (Jetpack 13.0; WordPress 6.2)1
Mozilla/5.0 (Windows NT 10.0; arm64) AppleWebKit/537.36 (KHTML, like Gecko) Edge/88.0.0.0 Safari/537.361
Jetpack by WordPress.com (Jetpack 12.1; WordPress 6.1)1

Country

fingerprintco-occurrences
BR · Brazil8
DE · Germany4
TR · Turkey4
MX · Mexico3
IN · India1
VN · Vietnam1
GR · Greece1

Network (ASN)

fingerprintco-occurrences
AS18881 · TELEFÔNICA BRASIL S.A5
AS47331 · TTNet A.S.4
AS3320 · Deutsche Telekom AG2
AS3209 · Vodafone GmbH2
AS8151 · Uninet S.A. de C.V.2
AS6799 · Ote SA (Hellenic Telecommunications Organisation)1
AS18403 · FPT Telecom Company1
AS9829 · National Internet Backbone1
AS17072 · TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. DE C.V.1
AS11706 · TELEFÔNICA BRASIL S.A1

TLS supported groups

fingerprintco-occurrences
0a0a,11ec,001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 156.0.8078.48, edge 155.0.4283.62, chrome 156.0.8078.47, +11 more.The fingerprint page shows the full measured match list. More on the catalog.2
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, winhttp 10.0.20348.1, +2 more.The fingerprint page shows the full measured match list. More on the catalog.1