TCP SYN (p0f)

4:47+17:0:1460:mss*29,13:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-08-05 12:02 · last seen 2026-09-10 09:16 · JSON

Last 7 days (1 observations)

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 sizemss*29
Window scale13
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
t12d130600_2d7513195f68_e51b7354d87f2

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr050000_57c5e92682a8_000000000000_0000000000001
ge11nn050000_57c5e92682a8_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
42340_2-4-8-1-3_1460_132

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3.1 Safari/605.1.11
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:121.0) Gecko/20100101 Firefox/121.01

Country

fingerprintco-occurrences
US · United States2

Network (ASN)

fingerprintco-occurrences
AS36352 · HostPapa2