User-Agent

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:126.0) Gecko/20100101 Firefox/126.0

first seen 2026-06-30 16:16 · last seen 2026-10-28 14:38 · JSON

Last 7 days (91 observations)

Distinct clients per day (last 30 days, peak 53/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 126.0
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.98
t13d151100_8daaf6152771_ab7e3b40a67752
t13d1812h1_85036bcba153_b26ce05bbdd62
t13d1312h2_a44d0ee8b3cc_e381dae6da6b2
t13d311100_e8f1e7e78f70_24695f2957a71
t13d1812h1_85036bcba153_d41ae481755e1
t13d3014h1_1d37bd780c83_5ae85263eb3b1
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
ge11nr16enus_3dfdba18536b_000000000000_00000000000013
ge11nr16dede_3dfdba18536b_000000000000_00000000000011
ge11nr16zhcn_3dfdba18536b_000000000000_00000000000010
ge11nr15enus_944d72baa157_000000000000_00000000000010
ge11nr15frfr_944d72baa157_000000000000_0000000000009
ge11nr16engb_3dfdba18536b_000000000000_0000000000009
ge11nr16zhtw_3dfdba18536b_000000000000_0000000000008
ge11nr16frfr_3dfdba18536b_000000000000_0000000000007
ge11nr15zhtw_944d72baa157_000000000000_0000000000006
ge11nr41dede_fd8eed19052c_000000000000_0000000000005

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;3:1;4:8388608;5:65536|8323073|0|m,s,a,p2

TCP SYN (p0f)

fingerprintco-occurrences
4:56+8:0:1460:mss*29,11:mss,sok,ts,nop,ws:df,id+:034
4:54+10:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:014
4:55+9:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:05
4:51+13:0:1452:65535,6:mss,sok,ts,nop,ws:df,id+:04
4:43+21:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:45+19:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:42+22:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:49+15:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:51+13:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:56+8:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:02

TCP SYN (JA4T)

fingerprintco-occurrences
42340_2-4-8-1-3_1460_1134
42340_2-4-8-1-3_1460_919
65535_2-4-8-1-3_1460_614
65535_2-4-8-1-3_1412_610
65535_2-4-8-1-3_1452_610
64240_2-4-8-1-3_1460_77
64240_2-4-8-1-3_1460_106
64240_2-4-8-1-3_1452_74
65535_2-4-8-1-3_1412_83
64240_2-4-8-1-3_1412_73

Country

fingerprintco-occurrences
NL · Netherlands35
US · United States24
BR · Brazil20
AR · Argentina10
PK · Pakistan10
BD · Bangladesh7
MA · Morocco7
MX · Mexico5
ZA · South Africa5
CO · Colombia5

Network (ASN)

fingerprintco-occurrences
AS48090 · TECHOFF SRV LIMITED34
AS150303 · SoloRDP13
AS142430 · DIGI VPS6
AS212238 · Datacamp Limited5
AS27747 · Telecentro S.A.5
AS36903 · Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM4
AS28573 · Claro NXT Telecomunicacoes Ltda3
AS36925 · MEDITELECOM3
AS8075 · Microsoft Corporation2
AS13335 · Cloudflare, Inc.2

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 158.0.1, firefox 157.0, firefox 157.0.1, +5 more.The fingerprint page shows the full measured match list. More on the catalog.91