TCP SYN (p0f)
4:53+11:0:1360:mss*44,7:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-07-30 08:23 · last seen 2026-09-06 00:22 · 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 | 53+11 |
| Options length | 0 |
| MSS | 1360 |
| Window size | mss*44 |
| 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 |
|---|---|
t13d4412h1_fd39b124ee10_58ed7828516f | 1 |
t13d2013h1_2b729b4bf6f3_e24568c0d440 | 1 |
t13d181100_85036bcba153_d41ae481755e | 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 |
ge11nn030000_fe444ad14866_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
ge11nn040000_e1d2031bdfea_000000000000_000000000000 | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
64240_2-4-8-1-3_1360_7 | 3 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 2 |
BD · Bangladesh | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS9009 · M247 Europe SRL | 1 |
AS7922 · Comcast Cable Communications, LLC | 1 |
AS149287 · Mynet Technologies | 1 |