User-Agent

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:125.0) Gecko/20100101 Firefox/125.0

first seen 2026-06-11 11:52 · last seen 2026-08-29 14:09 · JSON

Distinct clients per day (last 30 days, peak 1/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 125.0
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
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.5
q13d0311h3_55b375c5d22e_653d80c3fe9d Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 149.0.7827.102, +52 more.The fingerprint page shows the full measured match list. More on the catalog.4
t13d131100_f57a46bbacb6_e5728521abd42
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.1
t12d180700_4b22cbed5bed_2dae41c691ec1
t12d130600_2d7513195f68_e51b7354d87f1
t13d251100_b78ed14e2fd0_ab7e3b40a6771
t13d491200_bd868743f55c_7c76daad20ec1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr10enus_cce7300f883b_000000000000_0000000000003
ge11nn030000_0db47b7d240d_000000000000_0000000000002
ge30nr10enus_cce7300f883b_000000000000_0000000000001
ge30nn11enus_92169c7c2c73_000000000000_0000000000001
ge20nr09enus_d05bf764aa1e_000000000000_0000000000001
ge30nr09enus_d05bf764aa1e_000000000000_0000000000001
ge11nr11enus_85fe49c621a2_000000000000_0000000000001
ge11nr050000_cac2c496544b_000000000000_0000000000001
ge20nn11enus_92169c7c2c73_000000000000_0000000000001
ge11nr040000_88d30a62b7ad_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 149.0.7827.102, +59 more.The fingerprint page shows the full measured match list. More on the catalog.4
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, +43 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
4:52+12:0:1420:mss*30,7:mss,sok,ts,nop,ws:df,id+:03
4:114+14:0:1440:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:118+10:0:1460:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:49+15:0:1440:mss*44,10:mss,sok,ts,nop,ws:df,id+:01
4:54+10:0:1420:mss*30,7:mss,sok,ts,nop,ws:df,id+:01
4:45+19:0:1460:mss*29,9:mss,nop,ws:df,id+:01
4:57+7:0:1420:mss*30,7:mss,sok,ts,nop,ws:df,id+:01
4:45+19:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:38+26:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:01
4:44+20:0:1360:mss*44,7:mss,sok,ts,nop,ws::01

TCP SYN (JA4T)

fingerprintco-occurrences
42600_2-4-8-1-3_1420_71
65535_2-4-8-1-3_1460_61
64240_2-4-8-1-3_1360_71

QUIC transport params

fingerprintco-occurrences
q12_97eeb91f9c98 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, +41 more.The fingerprint page shows the full measured match list. More on the catalog.2
q13_313ab9afcaf5 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, edge 149.0.4022.52, +6 more.The fingerprint page shows the full measured match list. More on the catalog.2

Country

fingerprintco-occurrences
US · United States13
NL · Netherlands1
ID · Indonesia1
IL · Israel1

Network (ASN)

fingerprintco-occurrences
AS396982 · Google LLC9
AS8075 · Microsoft Corporation2
AS16509 · Amazon.com, Inc.1
AS6939 · Hurricane Electric LLC1
AS55688 · PT. Beon Intermedia1
AS202412 · Omegatech LTD1
AS12849 · Hot-Net internet services Ltd.1

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
q13d0311h3_55b375c5d22e_653d80c3fe9d2
t13d1516h2_8daaf6152771_d8a2da3f94cd2