User-Agent

Mozilla/5.0 (Windows NT 5.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

first seen 2026-07-16 17:45 · last seen 2026-07-25 23:23 · JSON

Decomposed attributes

Browser / clientFirefox 9.0.1
Operating systemWindows 5.1
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
t12d860600_e18388e7f3a3_a1e9356827952

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn05enus_dff23709e538_000000000000_0000000000002

TCP SYN (p0f)

fingerprintco-occurrences
4:120+8:0:1360:mss*48,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:110+18:0:1352:65535,8:mss,nop,ws,nop,nop,sok:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
65280_2-1-3-1-1-4_1360_81
65535_2-1-3-1-1-4_1352_81

Country

fingerprintco-occurrences
NL · Netherlands1
BG · Bulgaria1

Network (ASN)

fingerprintco-occurrences
AS213790 · Limited Network LTD1
AS62323 · DragoNET - Lyuba Pesheva1