TCP SYN (p0f)

6:56+8:0:1440:mss*30,10:mss,sok,ts,nop,ws:flow:0

first seen 2026-07-01 14:45 · last seen 2026-07-07 02:48 · JSON

Decomposed attributes

IP version	`6`
Initial TTL	`56+8`
Options length	`0`
MSS	`1440`
Window size	`mss*30`
Window scale	`10`
Options layout	`mss,sok,ts,nop,ws`
Quirks	`flow`
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
`t13d1712h1_ab0a1bf427ad_882d495ac381`	4
`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
`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.	4
`ge20nr09enus_d05bf764aa1e_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
`43200_2-4-8-1-3_1440_10`	5

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (compatible; SecurityScanner/1.0)`	3
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36`	1
`Mozilla/5.0 (compatible; SecurityScanner/1.0; +https://tokenfaucet.fun)`	1

Country

fingerprint	co-occurrences
`SG` · Singapore	5

Network (ASN)

fingerprint	co-occurrences
`AS20473` · The Constant Company, LLC	5

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
`q13d0311h3_55b375c5d22e_653d80c3fe9d`	1