TCP SYN (p0f)
4:39+25:0:1460:42300,11:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-06-19 16:51 · last seen 2026-06-19 16:57 · JSON
Decomposed attributes
| IP version | 4 |
|---|---|
| Initial TTL | 39+25 |
| Options length | 0 |
| MSS | 1460 |
| Window size | 42300 |
| Window scale | 11 |
| 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 |
|---|---|
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. | 2 |
t13d1714h1_5b57614c22b0_43ade6aba3df | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nn15zhcn_eb14703c0579_000000000000_000000000000 | 1 |
ge20nn14zhcn_b627e55c4c56_000000000000_000000000000 | 1 |
ge11nn040000_217776c81665_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. | 2 |
User-Agent
| fingerprint | co-occurrences |
|---|---|
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36 | 2 |
curl/8.7.1 | 1 |
Country
| fingerprint | co-occurrences |
|---|---|
KR · South Korea | 3 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS45102 · Alibaba (US) Technology Co., Ltd. | 3 |