TCP SYN (p0f)
4:49+15:0:1424:59220,7:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-09-06 09:50 · last seen 2026-09-12 16:00 · JSON
Last 7 days (2 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 | 4 |
|---|---|
| Initial TTL | 49+15 |
| Options length | 0 |
| MSS | 1424 |
| Window size | 59220 |
| 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 |
|---|---|
t13i170900_5b57614c22b0_78e6aca7449b | 2 |
t13d1516h2_8daaf6152771_d8a2da3f94cd Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nn15enus_a80081d13d36_000000000000_000000000000 | 1 |
ge11nn070000_f395b2c4bb38_000000000000_000000000000 | 1 |
ge11nn050000_e81ae831f766_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +43 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
59220_2-4-8-1-3_1424_7 | 3 |
User-Agent
| fingerprint | co-occurrences |
|---|---|
libredtail-http | 2 |
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36 | 1 |
Country
| fingerprint | co-occurrences |
|---|---|
JP · Japan | 2 |
HK · Hong Kong SAR China | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS132203 · Tencent Building, Kejizhongyi Avenue | 3 |