TCP SYN (JA4T)

65535_2-1-1-4-1-3_1414_8

first seen 2026-08-29 03:32 · last seen 2026-08-29 03:32 · 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

TCP window65535
Option kinds2-1-1-4-1-3
MSS1414
Window scale8

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
t13d2913h1_723694b0fccc_5671b5df50292

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr11jajp_835281d8e5d9_000000000000_0000000000002

TCP SYN (p0f)

fingerprintco-occurrences
4:113+15:0:1414:65535,8:mss,nop,nop,sok,nop,ws::01
4:114+14:0:1414:65535,8:mss,nop,nop,sok,nop,ws::01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.12

Country

fingerprintco-occurrences
JP · Japan2

Network (ASN)

fingerprintco-occurrences
AS4713 · NTT DOCOMO BUSINESS,Inc.2