TCP SYN (p0f)
4:44+20:0:1404:65535,6:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-10-23 03:33 · last seen 2026-10-31 04:21 · JSON
Last 7 days (1 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
| IP version | 4 |
|---|---|
| Initial TTL | 44+20 |
| Options length | 0 |
| MSS | 1404 |
| Window size | 65535 |
| Window scale | 6 |
| 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_02713d6af862 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 134.0.6998.35, chromium 133.0.6943.16.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 1 |
ge20nr13enus_e2ac93ffb364_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. | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
65535_2-4-8-1-3_1404_6 | 2 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
BR · Brazil | 1 |
IR · Iran | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS58224 · Iran Telecommunication Company PJS | 1 |
AS28130 · CERTTO TELECOMUNICAÇÕES LTDA EPP. | 1 |
TLS supported groups
| fingerprint | co-occurrences |
|---|---|
0a0a,001d,0017,0018 | 2 |