TCP SYN (p0f)
4:112+16:0:1400:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0
first seen 2026-08-29 16:32 · last seen 2026-08-29 16:32 · JSON
Decomposed attributes
| IP version | 4 |
|---|
| Initial TTL | 112+16 |
|---|
| Options length | 0 |
|---|
| MSS | 1400 |
|---|
| Window size | mss*44 |
|---|
| Window scale | 8 |
|---|
| Options layout | mss,nop,ws,nop,nop,sok |
|---|
| Quirks | df,id+,ecn |
|---|
| 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_02713d6af862 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 134.0.6998.35, chromium 133.0.6943.16.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
HTTP request (JA4H)
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, +60 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 152.0.7977.83, +85 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (JA4T)
User-Agent
Country
| fingerprint | co-occurrences |
|---|
CN · China | 2 |
Network (ASN)
| fingerprint | co-occurrences |
|---|
AS4837 · CHINA UNICOM China169 Backbone | 2 |
Cross-transport links
TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).