TCP SYN (p0f)
4:44+20:0:1460:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0
first seen 2026-10-17 21:55 · last seen 2026-10-18 11:20 · 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 | 4 |
|---|---|
| Initial TTL | 44+20 |
| Options length | 0 |
| MSS | 1460 |
| Window size | 65535 |
| 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 |
|---|---|
t13d4312h1_c7886603b240_b26ce05bbdd6 | 1 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
65535_2-1-3-1-1-4_1460_8 | 2 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
RU · Russia | 1 |
PH · Philippines | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS39927 · E-Light-Telecom Ltd. | 1 |
AS56262 · Dagupan Urban Satellite Vision Inc. | 1 |
TLS supported groups
| fingerprint | co-occurrences |
|---|---|
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, php-guzzle 8.3.1, curl 7.88.1, +10 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
0a0a,001d,0017,0018 | 1 |