User-Agent

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:142.0) Gecko/20100101 Firefox/142.0

first seen 2026-08-18 12:56 · last seen 2026-10-21 18:21 · 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 142.0
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
t13d201100_2b729b4bf6f3_36bf25f296df1
t13d251100_b78ed14e2fd0_ab7e3b40a6771

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_cabeb744284e_000000000000_0000000000001
ge11nn050000_57c5e92682a8_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:53+11:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:50+14:0:1460:65535,10:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_71
65535_2-4-8-1-3_1460_101

Country

fingerprintco-occurrences
SG · Singapore1
PL · Poland1

Network (ASN)

fingerprintco-occurrences
AS41378 · Kirino LLC1
AS218785 · TC DATACENTER LIMITED1

TLS supported groups

fingerprintco-occurrences
11ec,11eb,11ed,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.27.3, go-net/http 1.26.10.The fingerprint page shows the full measured match list. More on the catalog.1