TCP SYN (p0f)
4:50+14:0:1276:mss*34,12:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-07-01 16:00 · last seen 2026-07-02 06:00 · JSON
Decomposed attributes
| IP version | 4 |
|---|---|
| Initial TTL | 50+14 |
| Options length | 0 |
| MSS | 1276 |
| Window size | mss*34 |
| Window scale | 12 |
| 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 |
|---|---|
t13d3614h1_bcee18a5b459_5ae85263eb3b | 1 |
t13d1517h2_8daaf6152771_dcad5a053991 | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nr09enus_755f4c16f575_000000000000_000000000000 | 1 |
ge11nn050000_be0d0b335e46_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
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 149.0.7827.102, +59 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
43384_2-4-8-1-3_1276_12 | 2 |
User-Agent
| fingerprint | co-occurrences |
|---|---|
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36 | 1 |
product-scout-bot/1.0 | 1 |
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 2 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS400940 · Railway | 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).
| fingerprint | linked observations |
|---|---|
q13d0312h3_55b375c5d22e_178839b6cec1 | 1 |