TCP SYN (JA4T)

64680_2-1-3-4-0-0_1318_5

first seen 2026-08-27 08:47 · last seen 2026-09-09 15:01 · 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 window64680
Option kinds2-1-3-4-0-0
MSS1318
Window scale5

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
t13d1515h1_8daaf6152771_de4a06bb82e31
t13d2913h1_723694b0fccc_5671b5df50291
t13d1515h1_8daaf6152771_0a20fe35d3a51

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_0000000000001
ge11nr11enus_835281d8e5d9_000000000000_0000000000001
ge11nn14enus_4a2973d235de_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:51+13:0:1318:64680,5:mss,nop,ws,sok,eol+1::01
4:112+16:0:1318:64680,5:mss,nop,ws,sok,eol+1::01
4:46+18:0:1318:64680,5:mss,nop,ws,sok,eol+1::01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.361
Mozilla/5.0 (iPhone; CPU iPhone OS 16_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.7 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
US · United States3

Network (ASN)

fingerprintco-occurrences
AS7155 · ViaSat,Inc.3