TCP SYN (p0f)

6:50+14:0:1412:mss*46,10:mss,sok,ts,nop,ws:flow:0

first seen 2026-09-06 08:42 · last seen 2026-09-06 09:03 · 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 version6
Initial TTL50+14
Options length0
MSS1412
Window sizemss*46
Window scale10
Options layoutmss,sok,ts,nop,ws
Quirksflow
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
t12d290700_fc2078a0b8c0_8c06664c3ac53

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn06en00_3011d71998e2_000000000000_0000000000002
ge11nn040000_bfa5a9b89dd6_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64952_2-4-8-1-3_1412_103

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)3

Country

fingerprintco-occurrences
SG · Singapore3

Network (ASN)

fingerprintco-occurrences
AS6939 · Hurricane Electric LLC3