TCP SYN (p0f)

4:56+8:0:1360:mss*48,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-09-02 03:22 · last seen 2026-09-09 08:23 · JSON

Last 7 days (3 observations)

Distinct clients per day (last 30 days, peak 3/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 TTL56+8
Options length0
MSS1360
Window sizemss*48
Window scale7
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
t13d191000_9dc949149365_e7c2852226518

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr050000_a1c329e38462_000000000000_0000000000008

TCP SYN (JA4T)

fingerprintco-occurrences
65280_2-4-8-1-3_1360_78

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.368

Country

fingerprintco-occurrences
NL · Netherlands7
DE · Germany1

Network (ASN)

fingerprintco-occurrences
AS213790 · Limited Network LTD7
AS208137 · Feo Prest SRL1