TCP SYN (p0f)

4:52+12:0:1410:mss*46,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-01 14:35 · last seen 2026-08-18 07:28 · 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 TTL52+12
Options length0
MSS1410
Window sizemss*46
Window scale7
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
t13d3012h1_1d37bd780c83_882d495ac3811
t13d1516h2_8daaf6152771_e5627efa2ab11

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn030000_0d34275228c4_000000000000_0000000000001
ge20nn12enus_60f823d07c94_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p1

TCP SYN (JA4T)

fingerprintco-occurrences
64860_2-4-8-1-3_1410_72

User-Agent

fingerprintco-occurrences
LinkAce/2 (https://github.com/Kovah/LinkAce)1
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.3 Safari/537.361

Country

fingerprintco-occurrences
US · United States1
CH · Switzerland1

Network (ASN)

fingerprintco-occurrences
AS53667 · FranTech Solutions1
AS40676 · Psychz Networks1