TCP SYN (p0f)
4:49+15:0:1420:65535,8:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-07-19 22:07 · last seen 2026-09-05 12:49 · 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 | 49+15 |
| Options length | 0 |
| MSS | 1420 |
| Window size | 65535 |
| Window scale | 8 |
| 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 |
|---|---|
t13d4412h1_fd39b124ee10_58ed7828516f | 3 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 1 |
t13d1516h1_8daaf6152771_1a63afa7c478 | 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. | 3 |
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 2 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
65535_2-4-8-1-3_1420_8 | 5 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
PK · Pakistan | 2 |
KZ · Kazakhstan | 1 |
ML · Mali | 1 |
VN · Vietnam | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS21299 · Kar-Tel LLC | 1 |
AS30985 · Orange Mali SA | 1 |
AS150750 · IN CABLE INTERNET (PRIVATE) LIMITED | 1 |
AS7552 · Viettel Group | 1 |
AS138590 · Prime Networks | 1 |