TCP SYN (p0f)
6:50+14:0:1390:65535,8:mss,nop,ws,nop,nop,sok:flow:0
first seen 2026-10-28 16:06 · last seen 2026-10-28 16:06 · 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 | 6 |
|---|---|
| Initial TTL | 50+14 |
| Options length | 0 |
| MSS | 1390 |
| Window size | 65535 |
| Window scale | 8 |
| Options layout | mss,nop,ws,nop,nop,sok |
| Quirks | flow |
| 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 |
|---|---|
t13d201200_2b729b4bf6f3_e24568c0d440 | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
po11nn07enus_7d361e250c48_000000000000_000000000000 | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
65535_2-1-3-1-1-4_1390_8 | 1 |
User-Agent
| fingerprint | co-occurrences |
|---|---|
Mozilla/5.0 (Windows NT 6.3; x64) AppleWebKit/537.36 (KHTML, like Gecko) Firefox/90.0.0.0 Safari/537.36 | 1 |
Country
| fingerprint | co-occurrences |
|---|---|
VN · Vietnam | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS18403 · FPT Telecom Company | 1 |
TLS supported groups
| fingerprint | co-occurrences |
|---|---|
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, powershell 7.6.8, +1 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |