TCP SYN (p0f)
4:45+19:0:1260:mss*52,7:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-06-29 23:12 · last seen 2026-06-29 23:12 · JSON
Decomposed attributes
| IP version | 4 |
|---|---|
| Initial TTL | 45+19 |
| Options length | 0 |
| MSS | 1260 |
| Window size | mss*52 |
| 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)
| fingerprint | co-occurrences |
|---|---|
t13d1714h2_5b57614c22b0_53a6d0ab1c42 | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nr13enus_44e1f6d71293_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:22|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 154.0, +25 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
65520_2-4-8-1-3_1260_7 | 1 |
User-Agent
| fingerprint | co-occurrences |
|---|---|
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:134.0) Gecko/20100101 Firefox/134.0 | 1 |
Country
| fingerprint | co-occurrences |
|---|---|
NO · Norway | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS50304 · Blix Solutions AS | 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).
| fingerprint | linked observations |
|---|---|
q13d0315h3_55b375c5d22e_dc5437974b47 | 1 |