User-Agent

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Firefox/128.0

first seen 2026-06-14 01:16 · last seen 2026-10-30 21:30 · JSON

Last 7 days (98 observations)

Distinct clients per day (last 30 days, peak 65/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

Browser / clientFirefox 128.0
Operating systemWindows 10.0
Device classdesktop
Noteinferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above

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
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.103
t13d1516h2_8daaf6152771_33a51b5ad3c516
t13d1812h1_85036bcba153_d41ae481755e11
t13d311100_e8f1e7e78f70_d41ae481755e Match?Exact match in Thumbprint's published controlled catalog captures: rust-hyper 1.11.1, rust-hyper 1.11.0, rust-hyper 1.12.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.5
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
t12d130600_2d7513195f68_e51b7354d87f3
t13d3612h1_018971650b2c_58ed7828516f2
t12d210700_76e208dd3e22_f28add8e7af01
t12d1814h2_29a2cd9e9f10_d267a5f792d41
t13d131100_f57a46bbacb6_f50d94e863eb Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.27.1, go-net/http 1.27.3, go-net/http 1.27.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr16frfr_3dfdba18536b_000000000000_00000000000015
ge11nr16zhtw_3dfdba18536b_000000000000_00000000000014
ge11nr16engb_3dfdba18536b_000000000000_00000000000013
ge11nr16zhcn_3dfdba18536b_000000000000_00000000000013
ge11nr16enus_3dfdba18536b_000000000000_00000000000012
ge11nr15frfr_944d72baa157_000000000000_0000000000007
ge20nn10enus_d353d425b0bb_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 152.0.1.The fingerprint page shows the full measured match list. More on the catalog.6
ge11nn050000_3658ef221638_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.21.4, wget 1.25.0, wget 1.21.3.The fingerprint page shows the full measured match list. More on the catalog.6
ge11nr16dede_3dfdba18536b_000000000000_0000000000006
ge11nr040000_177aea7101ae_000000000000_0000000000005

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:131072;5:16384|12517377|0|m,p,a,s16
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,p,a,s3
1:65536;4:131072;5:16384|12517377|3:0:0:201,5:0:0:101,7:0:0:1,9:0:7:1,11:0:3:1,13:0:0:241|m,p,a,s1
1:65536;2:0;4:6291456;6:262144|15663105|0|m,p,a,s1

TCP SYN (p0f)

fingerprintco-occurrences
4:47+17:0:1460:65535,3:mss,sok,ts,nop,ws:df,id+:013
4:47+17:0:1460:1152,0:mss,sok,ts,nop,ws:df,id+:07
4:118+10:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:07
4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:04
6:53+11:0:1440:mss*30,9:mss,nop,ws:flow:03
4:45+19:0:1440:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:45+19:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:50+14:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:47+17:0:1440:65535,6:mss,sok,ts,nop,ws:df,id+:02
4:43+21:0:1412:65535,6:mss,sok,ts,nop,ws:df,id+:02

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_714
65535_2-4-8-1-3_1460_614
65535_2-4-8-1-3_1460_313
65535_2-4-8-1-3_1440_610
62720_2-1-3-1-1-4_1460_89
65535_2-4-8-1-3_1412_68
65535_2-4-8-1-3_1452_68
1152_2-4-8-1-3_1460_007
65535_2-4-8-1-3_1412_86
65535_2-4-8-1-3_1440_84

Country

fingerprintco-occurrences
BR · Brazil29
NL · Netherlands20
AR · Argentina10
US · United States8
CO · Colombia8
AU · Australia7
PK · Pakistan7
SG · Singapore6
BD · Bangladesh5
MX · Mexico4

Network (ASN)

fingerprintco-occurrences
AS197170 · TechTies Inc.20
AS31898 · Oracle Corporation9
AS28573 · Claro NXT Telecomunicacoes Ltda6
AS45102 · Alibaba (US) Technology Co., Ltd.5
AS6939 · Hurricane Electric LLC3
AS14618 · Amazon.com, Inc.3
AS8075 · Microsoft Corporation2
AS11664 · Techtel LMDS Comunicaciones Interactivas S.A.2
AS14593 · Space Exploration Technologies Corporation2
AS47583 · Hostinger International Limited2

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 157.0.1, firefox-esr 153.5.1esr, firefox 158.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.97
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: php-guzzle 8.3.1, curl 7.88.1, curl 8.13.0, +10 more.The fingerprint page shows the full measured match list. More on the catalog.10