User-Agent

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0

first seen 2026-06-18 02:22 · last seen 2026-07-13 13:37 · JSON

Decomposed attributes

Browser / clientFirefox 53.0
Operating systemWindows 6.1
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
t13d2413h2_df98b6d6dfe4_1b3407e2c9363
t13d3113h1_e8f1e7e78f70_1b3407e2c9361

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr04zhcn_21fb322ed28d_000000000000_0000000000002
ge11nn05zhcn_504771be86ae_000000000000_0000000000001
ge20nr05zhcn_8565061f331f_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
3:100;4:1073741824;2:0|1073676289|0|m,p,s,a3

TCP SYN (p0f)

fingerprintco-occurrences
4:48+16:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:03
4:46+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_72

Country

fingerprintco-occurrences
JP · Japan2
HK · Hong Kong SAR China2

Network (ASN)

fingerprintco-occurrences
AS45102 · Alibaba (US) Technology Co., Ltd.4