User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0
first seen 2026-06-23 06:37 · last seen 2026-07-31 13:25 · JSON
Decomposed attributes
| Browser / client | Firefox 109.0 |
|---|
| Operating system | Windows 10.0 |
|---|
| Device class | desktop |
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| Note | inferred 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)
HTTP request (JA4H)
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|
1:65536;2:0;4:6291456;6:262144;6890:287753361|15663105|1:1:0:220|m,a,s,p | 1 |
1:65536;2:0;4:6291456;6:262144;47642:2092069761|15663105|1:1:0:220|m,a,s,p | 1 |
1:65536;2:0;4:6291456;6:262144;39546:3875415964|15663105|1:1:0:220|m,a,s,p | 1 |
1:65536;2:0;4:6291456;6:262144;10874:1438424279|15663105|1:1:0:220|m,a,s,p | 1 |
1:65536;2:0;4:6291456;6:262144;39514:3962517072|15663105|1:1:0:220|m,a,s,p | 1 |
TCP SYN (p0f)
| fingerprint | co-occurrences |
|---|
4:58+6:0:1460:62727,10:mss,sok,ts,nop,ws:df,id+:0 | 4 |
4:56+8:0:1460:62727,10:mss,sok,ts,nop,ws:df,id+:0 | 1 |
4:45+19:0:1460:mss*29,9:mss,nop,ws:df,id+:0 | 1 |
TCP SYN (JA4T)
QUIC transport params
| fingerprint | co-occurrences |
|---|
q12_4b72b12b46e7 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 133.0.6943.16, chromium 131.0.6778.33.The fingerprint page shows the full measured match list. More on the catalog. | 9 |
q13_382365a2166d Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
Country
| fingerprint | co-occurrences |
|---|
US · United States | 17 |
Network (ASN)
| fingerprint | co-occurrences |
|---|
AS16509 · Amazon.com, Inc. | 16 |
AS6939 · Hurricane Electric LLC | 1 |
Cross-transport links
TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).