TCP SYN (p0f)

4:116+12:0:1410:mss*44,8:mss,nop,ws,nop,nop,sok::0

first seen 2026-08-28 18:16 · last seen 2026-08-28 18:16 · 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 TTL116+12
Options length0
MSS1410
Window sizemss*44
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
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_5671b5df50291

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr11frch_835281d8e5d9_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1410_81

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 17_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
CH · Switzerland1

Network (ASN)

fingerprintco-occurrences
AS6730 · Sunrise GmbH1