TCP SYN (p0f)

4:55+9:0:1460:mss*29,11:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-21 01:49 · last seen 2026-08-12 07:08 · JSON

Decomposed attributes

IP version4
Initial TTL55+9
Options length0
MSS1460
Window sizemss*29
Window scale11
Options layoutmss,sok,ts,nop,ws
Quirksdf,id+
Payload class0

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)

fingerprintco-occurrences
t13d131100_f57a46bbacb6_ab7e3b40a677 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.5, go-net/http 1.26.4.The fingerprint page shows the full measured match list. More on the catalog.1
t13d311100_e8f1e7e78f70_d41ae481755e Match?Exact match in Thumbprint's published controlled catalog captures: rust-hyper 1.11.0, rust-hyper 1.11.1, rust-hyper 1.10.1.The fingerprint page shows the full measured match list. More on the catalog.1
t13d191100_9dc949149365_e5728521abd41

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_845398f9f2c0_000000000000_0000000000001
ge11nr060000_c1c771e2649b_000000000000_0000000000001
ge11nn040000_08e7224bf8c7_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
42340_2-4-8-1-3_1460_113

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/120.0.0.0 Safari/537.361
vuln_scanner/3.1.0 (CVE-2026-4020)1

Country

fingerprintco-occurrences
US · United States2
RO · Romania1

Network (ASN)

fingerprintco-occurrences
AS47890 · UNMANAGED LTD1
AS140947 · SnTHostings1
AS142430 · DIGI VPS1