TCP SYN (p0f)

4:117+11:0:1460:mss*44,6:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-08 04:42 · last seen 2026-09-07 11:55 · JSON

Distinct clients per day (last 30 days, peak 1/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

IP version4
Initial TTL117+11
Options length0
MSS1460
Window sizemss*44
Window scale6
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
t13d531000_ed6c8d7875f9_518fb456ca5912

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr06enus_936fae08049d_000000000000_0000000000006
ge11nn06enus_936fae08049d_000000000000_0000000000006

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_612

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.3612

Country

fingerprintco-occurrences
US · United States12

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.12