User-Agent
Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0
first seen 2026-06-20 21:53 · last seen 2026-09-14 14:33 · JSON
Last 7 days (11 observations)
Distinct clients per day (last 30 days, peak 2/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 | Linux x86_64 |
| 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. | 158 |
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. | 80 |
t13d1615h2_86a278354501_a54fffd0eb61 | 30 |
q13d0315h3_55b375c5d22e_bb76f32061e3 | 23 |
t13d1517h2_8daaf6152771_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 154.0.1, firefox 155.0.1, +1 more.The fingerprint page shows the full measured match list. More on the catalog. | 22 |
t13d1617h2_86a278354501_3e9721a6796e | 16 |
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. | 13 |
t13d1614h2_86a278354501_53a6d0ab1c42 | 7 |
t13d1615h2_86a278354501_ccb9c18a2635 | 7 |
t13d1516h2_8daaf6152771_0c27189014cf Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 155.0.1, firefox 154.0.1.The fingerprint page shows the full measured match list. More on the catalog. | 7 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
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. | 55 |
ge20nr12enus_979a40433f82_000000000000_000000000000 | 33 |
ge20nr11enus_3901d4197baf_000000000000_000000000000 | 32 |
ge20nr12enus_a72b71f519fc_000000000000_000000000000 | 29 |
ge20nn11enus_3901d4197baf_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 153.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 23 |
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. | 17 |
ge20nr11enus_187a9385d229_000000000000_000000000000 | 11 |
ge30nr10enus_d6360b5be5ba_000000000000_000000000000 | 10 |
ge20nr12enus_1204b4dfdccd_000000000000_000000000000 | 9 |
ge30nr11enus_7eaa533deebc_000000000000_000000000000 | 8 |
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. | 81 |
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. | 58 |
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. | 23 |
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. | 15 |
1:65536;2:0;4:131072;5:16384|12517377|5:0:0:42|m,p,a,s | 10 |
1:65536;2:0;4:131072;5:16384|12517377|9:0:0:42|m,p,a,s | 9 |
1:65536;2:0;4:131072;5:16384|12517377|7:0:0:42|m,p,a,s | 7 |
1:65536;2:0;4:131072;5:16384|12517377|11:0:0:42|m,p,a,s | 7 |
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|1:0:0:42|m,p,a,s | 5 |
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. | 107 |
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. | 4 |
Country
| fingerprint | co-occurrences |
|---|---|
AU · Australia | 94 |
US · United States | 42 |
MU · Mauritius | 42 |
DE · Germany | 39 |
CA · Canada | 32 |
IE · Ireland | 26 |
FR · France | 15 |
CH · Switzerland | 12 |
ID · Indonesia | 12 |
IT · Italy | 11 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS38195 · Superloop | 61 |
AS23889 · Mauritius Telecom Ltd | 42 |
AS134090 · Leaptel | 27 |
AS701 · Verizon Business | 25 |
AS5466 · Eircom Limited | 21 |
AS62336 · PURtel.com GmbH | 18 |
AS1403 · EBOX | 14 |
AS11878 · tzulo, inc. | 13 |
AS23693 · PT. Telekomunikasi Selular | 12 |
AS5410 · Bouygues Telecom SA | 12 |
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).