TCP SYN (p0f)
4:54+10:0:1440:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:0
first seen 2026-07-21 19:35 · last seen 2026-07-21 19:35 · JSON
Decomposed attributes
| IP version | 4 |
|---|
| Initial TTL | 54+10 |
|---|
| Options length | 0 |
|---|
| MSS | 1440 |
|---|
| Window size | 65535 |
|---|
| Window scale | 6 |
|---|
| Options layout | mss,nop,ws,nop,nop,ts,sok,eol+1 |
|---|
| Quirks | df |
|---|
| 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)
HTTP/2 frames (Akamai)
TCP SYN (JA4T)
User-Agent
Country
| fingerprint | co-occurrences |
|---|
BD · Bangladesh | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|
AS63969 · Race Online Limited | 1 |
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).