User-Agent

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:134.0) Gecko/20100101 Firefox/134.0

first seen 2026-06-29 23:12 · last seen 2026-10-31 07:51 · JSON

Last 7 days (8 observations)

Distinct clients per day (last 30 days, peak 2/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 134.0
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.6
t13d131000_f57a46bbacb6_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog.4
q13d0315h3_55b375c5d22e_dc5437974b47 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 155.0.1, +25 more.The fingerprint page shows the full measured match list. More on the catalog.2
t13d191000_9dc949149365_e7c2852226512
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.2
t13d1714h2_5b57614c22b0_53a6d0ab1c421
t13d570900_eb0d7745fcfe_61a98bfc9c3f1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn130000_7f254152a55f_000000000000_0000000000006
ge11nr120000_310be72a5e7f_000000000000_0000000000003
ge11nr08enus_acc2f3543596_000000000000_0000000000002
ge11nn08enus_acc2f3543596_000000000000_0000000000002
ge30nn12enus_0783f28e35da_000000000000_0000000000001
ge30nr12enus_00399138758f_000000000000_0000000000001
ge20nr13enus_44e1f6d71293_000000000000_0000000000001
ge11nn05*000_41d3a8fc004e_000000000000_0000000000001
ge11nn120000_310be72a5e7f_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:22|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 155.0.1, +31 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
4:57+7:0:1460:mss*29,12:mss,sok,ts,nop,ws:df,id+:08
4:51+13:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:02
4:57+7:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:02
4:55+9:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:01
4:45+19:0:1260:mss*52,7:mss,sok,ts,nop,ws:df,id+:01
4:54+10:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:01
4:243+12:0:1460:26883,7:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
42340_2-4-8-1-3_1460_128
42340_2-4-8-1-3_1460_96
65520_2-4-8-1-3_1260_71
26883_2-4-8-1-3_1460_71

QUIC transport params

fingerprintco-occurrences
q12_022106b74856 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 154.0, +29 more.The fingerprint page shows the full measured match list. More on the catalog.2

Country

fingerprintco-occurrences
NL · Netherlands12
NO · Norway3
US · United States2
ES · Spain1

Network (ASN)

fingerprintco-occurrences
AS48090 · TECHOFF SRV LIMITED12
AS50304 · Blix Solutions AS3
AS16509 · Amazon.com, Inc.1
AS142430 · DIGI VPS1
AS150303 · SoloRDP1

TLS supported groups

fingerprintco-occurrences
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.6
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.4

Cross-transport links

TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).

fingerprintlinked observations
q13d0315h3_55b375c5d22e_dc5437974b471
t13d1714h2_5b57614c22b0_53a6d0ab1c421