TCP SYN (p0f)

4:241+14:0:1460:65535,0:mss:df,id+:0

first seen 2026-09-01 06:45 · last seen 2026-09-08 11:32 · 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 TTL241+14
Options length0
MSS1460
Window size65535
Window scale0
Options layoutmss
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
t13d2014h2_a09f3c656075_a5b99884f7f52

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn05zhcn_eff5d0107a3f_000000000000_0000000000002

HTTP/2 frames (Akamai)

fingerprintco-occurrences
4:2097152;3:100|10485760|0|m,s,p,a2

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2_1460_002

User-Agent

fingerprintco-occurrences
Good2

Country

fingerprintco-occurrences
SG · Singapore2

Network (ASN)

fingerprintco-occurrences
AS141389 · GOIP Telecom (Asia Pacific) Pte. Ltd.2