User-Agent

Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:124.0) Gecko/20100101 Firefox/124.0

first seen 2026-10-24 11:34 · last seen 2026-10-30 00:06 · JSON

Last 7 days (85 observations)

Distinct clients per day (last 30 days, peak 56/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 124.0
Operating systemLinux x86_64
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.83
t13d191100_9dc949149365_e5728521abd41
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
ge11nr16zhcn_3dfdba18536b_000000000000_00000000000014
ge11nr16enus_3dfdba18536b_000000000000_00000000000011
ge11nr16zhtw_3dfdba18536b_000000000000_00000000000010
ge11nr16dede_3dfdba18536b_000000000000_0000000000008
ge11nr16engb_3dfdba18536b_000000000000_0000000000007
ge11nr15dede_944d72baa157_000000000000_0000000000006
ge11nr16frfr_3dfdba18536b_000000000000_0000000000006
ge11nr15zhcn_944d72baa157_000000000000_0000000000006
ge11nr15zhtw_944d72baa157_000000000000_0000000000005
ge11nr15frfr_944d72baa157_000000000000_0000000000004

TCP SYN (p0f)

fingerprintco-occurrences
4:46+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:03
4:46+18:0:1440:mss*44,7:mss,sok,ts,nop,ws:df,id+:03
4:46+18:0:1412:65535,8:mss,sok,ts,nop,ws:df,id+:03
4:45+19:0:1440:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:46+18:0:1412:65535,6:mss,sok,ts,nop,ws:df,id+:02
4:47+17:0:1452:65535,6:mss,sok,ts,nop,ws:df,id+:02
4:45+19:0:1440:65535,6:mss,sok,ts,nop,ws:df,id+:02
4:49+15:0:1412:65535,6:mss,sok,ts,nop,ws:df,id+:02
4:46+18:0:1440:65535,6:mss,sok,ts,nop,ws:df,id+:02

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1412_611
64240_2-4-8-1-3_1460_78
64240_2-4-8-1-3_1440_78
65535_2-4-8-1-3_1440_66
65535_2-4-8-1-3_1460_65
64240_2-4-8-1-3_1452_75
65535_2-4-8-1-3_1460_85
65535_2-4-8-1-3_1452_65
65535_2-4-8-1-3_1412_84
64240_2-4-8-1-3_1412_74

Country

fingerprintco-occurrences
BR · Brazil20
CO · Colombia8
AR · Argentina6
MA · Morocco6
PK · Pakistan5
BD · Bangladesh4
VE · Venezuela4
MX · Mexico3
UA · Ukraine3
IL · Israel3

Network (ASN)

fingerprintco-occurrences
AS13489 · UNE EPM TELECOMUNICACIONES S.A.4
AS28573 · Claro NXT Telecomunicacoes Ltda3
AS22927 · Telefonica de Argentina3
AS36925 · MEDITELECOM3
AS8048 · CANTV Servicios, Venezuela3
AS197170 · TechTies Inc.2
AS36903 · Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM2
AS11664 · Techtel LMDS Comunicaciones Interactivas S.A.2
AS8151 · Uninet S.A. de C.V.2
AS17557 · Pakistan Telecommunication Company 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.83
001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13.The fingerprint page shows the full measured match list. More on the catalog.1
11ec,11eb,11ed,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.27.3, go-net/http 1.26.10.The fingerprint page shows the full measured match list. More on the catalog.1