TCP SYN (p0f)

4:111+17:0:1460:65535,8:mss,nop,ws,sok,ts:df,id+:0

first seen 2026-11-02 10:38 · last seen 2026-11-02 11:33 · JSON

Last 7 days (3 observations)

Decomposed attributes

IP version	`4`
Initial TTL	`111+17`
Options length	`0`
MSS	`1460`
Window size	`65535`
Window scale	`8`
Options layout	`mss,nop,ws,sok,ts`
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
`t12d2109h1_76e208dd3e22_7af1ed941c26`	3

HTTP request (JA4H)

fingerprint	co-occurrences
`ge11nn030000_fe444ad14866_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0, curl 7.88.1, curl 8.21.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.	3

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-1-3-4-8_1460_8`	3

User-Agent

fingerprint	co-occurrences
`zde-proxy-syn-check/1`	3

Country

fingerprint	co-occurrences
`RU` · Russia	3

Network (ASN)

fingerprint	co-occurrences
`AS31257` · Orion Telecom LLC	2
`AS47626` · Timer, LLC	1

TLS supported groups

fingerprint	co-occurrences
`001d,0017,0018` Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, winhttp 10.0.20348.1, +2 more.The fingerprint page shows the full measured match list. More on the catalog.	3