User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0
first seen 2026-06-20 07:55 · last seen 2026-09-14 14:35 · JSON
Last 7 days (8 observations)
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 / client | Firefox 152.0 |
|---|---|
| Operating system | Windows 10.0 |
| Device class | desktop |
| 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)
| fingerprint | co-occurrences |
|---|---|
t13d1617h2_86a278354501_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 152.0.3, +10 more.The fingerprint page shows the full measured match list. More on the catalog. | 78 |
q13d0315h3_55b375c5d22e_dc5437974b47 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 154.0, +18 more.The fingerprint page shows the full measured match list. More on the catalog. | 75 |
t13d1616h2_86a278354501_0c27189014cf Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 152.0.6, +10 more.The fingerprint page shows the full measured match list. More on the catalog. | 28 |
t13d0916h2_f91f431d341e_0c27189014cf | 25 |
t13d0917h2_f91f431d341e_3cbfd9057e0d | 14 |
t13d1610h2_86a278354501_1b18b669d02d | 7 |
t13d1615h2_86a278354501_a54fffd0eb61 | 7 |
t13d1614h2_86a278354501_53a6d0ab1c42 | 5 |
t13d1716h2_6e7903f2cb1b_0c27189014cf | 4 |
t13d1714h2_5b57614c22b0_53a6d0ab1c42 | 4 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nr13enus_016d87568c43_000000000000_000000000000 | 26 |
ge20nr10enus_b3034183f430_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 154.0, +21 more.The fingerprint page shows the full measured match list. More on the catalog. | 26 |
ge20nr12enus_979a40433f82_000000000000_000000000000 | 17 |
ge20nr10ruru_b3034183f430_000000000000_000000000000 | 12 |
ge30nr09enus_a060b6642c5e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 154.0, +22 more.The fingerprint page shows the full measured match list. More on the catalog. | 12 |
ge20nr11enus_187a9385d229_000000000000_000000000000 | 10 |
ge20nn11ruru_3901d4197baf_000000000000_000000000000 | 10 |
ge20nn030000_ff50983941c1_000000000000_000000000000 | 8 |
ge20nr10engb_b3034183f430_000000000000_000000000000 | 7 |
ge20nr11ruru_3901d4197baf_000000000000_000000000000 | 6 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:22|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 154.0, +25 more.The fingerprint page shows the full measured match list. More on the catalog. | 75 |
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:42|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 152.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 38 |
1:65536;2:0;4:131072;5:16384|12517377|5:0:0:22|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0.3, firefox 154.0, firefox 153.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog. | 12 |
1:65536;2:0;4:131072;5:16384|12517377|7:0:0:22|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0.3, firefox 155.0, firefox 154.0, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 10 |
1:65536;2:0;4:131072;5:16384|12517377|1:0:0:22|m,p,a,s | 6 |
1:65536;2:0;4:131072;5:16384|12517377|11:0:0:42|m,p,a,s | 5 |
1:65536;2:0;4:131072;5:16384|12517377|5:0:0:42|m,p,a,s | 3 |
1:65536;2:0;4:131072;5:16384|12517377|15:0:0:42|m,p,a,s | 3 |
1:65536;2:0;4:131072;5:16384|12517377|13:0:0:42|m,p,a,s | 3 |
1:65536;2:0;4:131072;5:16384|12517377|9:0:0:42|m,p,a,s | 3 |
TCP SYN (p0f)
TCP SYN (JA4T)
QUIC transport params
| fingerprint | co-occurrences |
|---|---|
q12_022106b74856 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 154.0, +25 more.The fingerprint page shows the full measured match list. More on the catalog. | 71 |
q13_29150affcbde Match?Exact match in Thumbprint's published controlled catalog captures: firefox 151.0.3, firefox 132.0, firefox 151.0.4, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 6 |
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 51 |
FR · France | 51 |
RU · Russia | 30 |
FI · Finland | 13 |
IT · Italy | 12 |
GB · United Kingdom | 11 |
SE · Sweden | 11 |
BR · Brazil | 10 |
RO · Romania | 9 |
CA · Canada | 8 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS15557 · Societe Francaise Du Radiotelephone - SFR SA | 47 |
AS28840 · PJSC TATTELECOM | 16 |
AS7018 · AT&T Enterprises, LLC | 13 |
AS215730 · H2NEXUS LTD | 13 |
AS39351 · 31173 Services AB | 12 |
AS50190 · HOSTINGBIT SRL | 9 |
AS57169 · EDIS GmbH | 8 |
AS5089 · Virgin Media Limited | 7 |
AS10796 · Charter Communications Inc | 7 |
AS3269 · Telecom Italia S.p.A. | 7 |
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).