TCP SYN (p0f)
6:52+12:0:1390:65535,8:mss,nop,ws,nop,nop,sok:flow:0
first seen 2026-09-01 11:22 · last seen 2026-10-09 20:33 · JSON
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 | 52+12 |
| 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 |
|---|---|
t13d1312h2_f57a46bbacb6_ab7e3b40a677 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.10, go-net/http 1.26.9, +7 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
t13d201200_2b729b4bf6f3_e24568c0d440 | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
po11nn07trtr_7d361e250c48_000000000000_000000000000 | 1 |
ge20nn13enus_c5e6d82ad0d9_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
2:0;4:4194304;5:16384;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.10, go-net/http 1.26.9, +8 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
65535_2-1-3-1-1-4_1390_8 | 2 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
BR · Brazil | 1 |
TR · Turkey | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS28573 · Claro NXT Telecomunicacoes Ltda | 1 |
AS16135 · Turkcell A.S. | 1 |