TCP SYN (p0f)

4:111+17:0:1460:8192,2:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-28 17:16 · last seen 2026-08-29 09:39 · 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 TTL111+17
Options length0
MSS1460
Window size8192
Window scale2
Options layoutmss,nop,ws,nop,nop,sok
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
t13d2913h1_723694b0fccc_5671b5df50293

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn11fifi_835281d8e5d9_000000000000_0000000000001
ge11nr11fifi_835281d8e5d9_000000000000_0000000000001
ge11nr11engb_835281d8e5d9_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
8192_2-1-3-1-1-4_1460_23

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 16_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Mobile/15E148 Safari/604.12
Mozilla/5.0 (iPhone; CPU iPhone OS 17_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
VE · Venezuela2
GB · United Kingdom1

Network (ASN)

fingerprintco-occurrences
AS267809 · 360NET C.A.2
AS5089 · Virgin Media Limited1