User-Agent

Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0

first seen 2026-06-22 04:08 · last seen 2026-08-31 15:00 · 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 115.0
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
t13d311000_e8f1e7e78f70_518fb456ca5911
t13d1715h2_5b57614c22b0_3d5424432f573
t13d1713h2_5b57614c22b0_f81080dfc5573

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr09enus_a1ca5f23d14f_000000000000_00000000000010
ge20nn10ruru_d63c3be3d9d1_000000000000_0000000000003
ge20nn11enus_bd1a02c579a6_000000000000_0000000000003
ge11nn09enus_a1ca5f23d14f_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;4:131072;5:16384|12517377|3:0:0:201,5:0:0:101,7:0:0:1,9:0:7:1,11:0:3:1,13:0:0:241,15:0:13:42|m,p,a,s3
1:65536;4:131072;5:16384|12517377|3:0:0:201,5:0:0:101,7:0:0:1,9:0:7:1,11:0:3:1,13:0:0:241,17:0:13:42|m,p,a,s2
1:65536;4:131072;5:16384|12517377|3:0:0:201,5:0:0:101,7:0:0:1,9:0:7:1,11:0:3:1,13:0:0:241,19:0:13:42|m,p,a,s1

TCP SYN (p0f)

fingerprintco-occurrences
4:52+12:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:07
4:113+15:0:1460:65535,1:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:53+11:0:1460:mss*29,12:mss,sok,ts,nop,ws:df,id+:03
4:111+17:0:1460:8192,8:mss,nop,ws,nop,nop,sok:df,id+:02
4:113+15:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:55+9:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
42340_2-4-8-1-3_1460_123
8192_2-1-3-1-1-4_1460_82
64240_2-4-8-1-3_1460_71

Country

fingerprintco-occurrences
US · United States7
NL · Netherlands4
GB · United Kingdom4
RU · Russia2

Network (ASN)

fingerprintco-occurrences
AS6079 · RCN7
AS201579 · HOSTGNOME LTD4
AS49981 · WorldStream B.V.3
AS8402 · PJSC "Vimpelcom"2
AS40676 · Psychz Networks1