TCP SYN (p0f)
4:52+12:0:1460:mss*22,9:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-06-11 02:26 · last seen 2026-10-06 06:41 · 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
| IP version | 4 |
|---|---|
| Initial TTL | 52+12 |
| Options length | 0 |
| MSS | 1460 |
| Window size | mss*22 |
| Window scale | 9 |
| Options layout | mss,sok,ts,nop,ws |
| Quirks | df,id+ |
| Payload class | 0 |
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 |
|---|---|
t13i131000_f57a46bbacb6_ab7e3b40a677 | 9 |
t13d1516h2_8daaf6152771_806a8c22fdea Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 151.0.7922.137, chromium 151.0.7922.34, +28 more.The fingerprint page shows the full measured match list. More on the catalog. | 5 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge11nn030000_0db47b7d240d_000000000000_000000000000 | 2 |
co11nn020000_3ed38b250d3d_000000000000_000000000000 | 2 |
ge20nr13zhcn_5907f7c6644a_000000000000_000000000000 | 2 |
ge11nn040000_88d30a62b7ad_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.25.0.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
pr11nn060000_ac4c34c89fad_000000000000_000000000000 | 1 |
op11nn030000_0db47b7d240d_000000000000_000000000000 | 1 |
po11nn050000_b4ba55311b46_000000000000_000000000000 | 1 |
ge11nn040000_91d9e55fb80a_000000000000_000000000000 | 1 |
ge20nn14zhcn_3fb598f484fb_000000000000_000000000000 | 1 |
ge20nr14zhcn_3fb598f484fb_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +57 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 152.0.7977.83, +81 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
1:65536;2:0;4:6291456;6:262144|15663105|3:1:0:256|m,a,s,p | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
32120_2-4-8-1-3_1460_9 | 5 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
CH · Switzerland | 9 |
JP · Japan | 5 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS51852 · Private Layer INC | 9 |
AS216211 · CYBERVERSE LLC | 5 |