TCP SYN (p0f)
4:55+9:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-07-02 03:30 · last seen 2026-09-04 09:58 · JSON
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
| IP version | 4 |
|---|---|
| Initial TTL | 55+9 |
| Options length | 0 |
| MSS | 1460 |
| Window size | mss*20 |
| Window scale | 7 |
| 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)
HTTP request (JA4H)
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
29200_2-4-8-1-3_1460_7 | 11 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
RO · Romania | 6 |
NL · Netherlands | 3 |
US · United States | 1 |
GB · United Kingdom | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS47890 · UNMANAGED LTD | 6 |
AS49870 · Alsycon B.V. | 3 |
AS31898 · Oracle Corporation | 1 |
AS53850 · GorillaServers, Inc. | 1 |