TCP SYN (p0f)

4:47+17:0:1460:65535,6:mss,nop,ws,sok,ts:df,id+:0

first seen 2026-08-21 18:49 · last seen 2026-08-21 18:49 · 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 TTL47+17
Options length0
MSS1460
Window size65535
Window scale6
Options layoutmss,nop,ws,sok,ts
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
t13d260900_6d1bcf7a4624_188c7f576dcd1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr14engb_d9d4fb46dcb1_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-4-8_1460_61

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
AE · United Arab Emirates1

Network (ASN)

fingerprintco-occurrences
AS62044 · Zscaler Switzerland GmbH1