TCP SYN (p0f)

4:47+17:0:1452:mss*44,1:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-08-26 01:10 · last seen 2026-09-08 08:21 · JSON

Distinct clients per day (last 30 days, peak 6/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 TTL47+17
Options length0
MSS1452
Window sizemss*44
Window scale1
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
t13d1515h1_8daaf6152771_0a20fe35d3a55
t13d1515h1_8daaf6152771_de4a06bb82e35

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_0000000000006
ge11nn14enus_4a2973d235de_000000000000_0000000000004

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1452_110

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.361

Country

fingerprintco-occurrences
BR · Brazil5
PE · Peru2
IT · Italy1
CO · Colombia1
EC · Ecuador1

Network (ASN)

fingerprintco-occurrences
AS6147 · INTEGRATEL PERÚ S.A.A.2
AS1267 · WIND TRE S.P.A.1
AS28006 · CORPORACION NACIONAL DE TELECOMUNICACIONES - CNT EP1
AS28649 · Desktop Sigmanet Comunicação Multimídia SA1
AS270313 · WN Tellecom1
AS262450 · NORTENET TELECOMUNICACOES DO BRASIL LTDA - EPP1
AS264796 · CABLEMAS SAS1
AS272505 · VAMOSNET TELECOMUNICAÇÕES LTDA1
AS266914 · Lary Net1