TCP SYN (p0f)

4:119+9:0:1340:mss*48,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-09-03 16:05 · last seen 2026-09-03 16:05 · 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 TTL119+9
Options length0
MSS1340
Window sizemss*48
Window scale8
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
t13d181000_5d04281c6031_78e6aca7449b2

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn060000_87a4db4732ec_000000000000_0000000000001
ge11nn050000_4f425be83c57_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64320_2-1-3-1-1-4_1340_82

User-Agent

fingerprintco-occurrences
PostmanRuntime/7.51.11

Country

fingerprintco-occurrences
SE · Sweden2

Network (ASN)

fingerprintco-occurrences
AS212238 · Datacamp Limited2