TCP SYN (p0f)
4:119+9:0:1280:mss*51,8:mss,nop,ws,nop,nop,sok:df,id+:0
first seen 2026-07-19 10:25 · last seen 2026-07-19 10:25 · JSON
Decomposed attributes
| IP version | 4 |
|---|
| Initial TTL | 119+9 |
|---|
| Options length | 0 |
|---|
| MSS | 1280 |
|---|
| Window size | mss*51 |
|---|
| Window scale | 8 |
|---|
| Options layout | mss,nop,ws,nop,nop,sok |
|---|
| 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_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. | 1 |
HTTP request (JA4H)
HTTP/2 frames (Akamai)
TCP SYN (JA4T)
User-Agent
Country
| fingerprint | co-occurrences |
|---|
US · United States | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|
AS402506 · Zenixcloud Inc | 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).