TCP SYN (p0f)
4:49+15:0:1460:mss*44,11:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-06-11 00:13 · last seen 2026-09-08 02:02 · 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 | 49+15 |
| Options length | 0 |
| MSS | 1460 |
| Window size | mss*44 |
| Window scale | 11 |
| 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 |
|---|---|
t13d1516h2_8daaf6152771_d8a2da3f94cd Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog. | 37 |
t13d1616h2_86a278354501_eeeea6562960 | 28 |
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, +24 more.The fingerprint page shows the full measured match list. More on the catalog. | 13 |
t13d1516h2_8daaf6152771_eeeea6562960 | 9 |
t13d311000_8ae6a2f5ac15_5ac7197df9d2 | 3 |
t13d1715h2_5b57614c22b0_a54fffd0eb61 | 1 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 1 |
HTTP request (JA4H)
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, +43 more.The fingerprint page shows the full measured match list. More on the catalog. | 19 |
1:4096;2:0;4:32768;5:16384|12517377|3:0:0:42|m,p,a,s | 16 |
1:4096;2:0;4:32768;5:16384|12517377|5:0:0:22|m,p,a,s | 9 |
1:65536;2:0;4:6291456;6:262144|15663105|5:1:0:256|m,a,s,p | 6 |
1:65536;2:0;4:6291456;6:262144|15663105|3:1:0:256|m,a,s,p | 5 |
1:4096;2:0;4:32768;5:16384|12517377|3:0:0:22|m,p,a,s | 5 |
1:65536;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p | 4 |
1:4096;2:0;4:32768;5:16384|12517377|9:0:0:22|m,p,a,s | 4 |
1:65536;2:0;4:6291456;6:262144|15663105|3:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 151.0.7922.34, chromium 147.0.7727.15, chromium 145.0.7632.6, +21 more.The fingerprint page shows the full measured match list. More on the catalog. | 4 |
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 149.0.7827.102, +59 more.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
64240_2-4-8-1-3_1460_11 | 91 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
ID · Indonesia | 87 |
US · United States | 3 |
NO · Norway | 1 |
NL · Netherlands | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS45102 · Alibaba (US) Technology Co., Ltd. | 87 |
AS209366 · SEMrush CY LTD | 3 |
AS56655 · Gigahost AS | 1 |
AS43350 · NForce Entertainment B.V. | 1 |