User-Agent

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Firefox/121.0

first seen 2026-07-05 21:02 · last seen 2026-07-16 17:43 · JSON

Decomposed attributes

Browser / clientFirefox 121.0
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.18

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn030000_b0d6a43aa599_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: powershell 5.1.26100.33296, powershell 5.1.26100.33158, powershell 5.1.26100.32995.The fingerprint page shows the full measured match list. More on the catalog.18

TCP SYN (p0f)

fingerprintco-occurrences
4:58+6:0:1420:mss*46,7:mss,sok,ts,nop,ws:df,id+:018

TCP SYN (JA4T)

fingerprintco-occurrences
65320_2-4-8-1-3_1420_718

Country

fingerprintco-occurrences
NL · Netherlands18

Network (ASN)

fingerprintco-occurrences
AS396982 · Google LLC18