TCP SYN (JA4T)

59080_2-4-8_8440_00

first seen 2026-06-29 22:35 · last seen 2026-09-16 07:18 · JSON

Last 7 days (100 observations)

Distinct clients per day (last 30 days, peak 21/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 window59080
Option kinds2-4-8
MSS8440
Window scale00

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
t12i130500_2d7513195f68_e51b7354d87f1899

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr040000_e1d2031bdfea_000000000000_0000000000001899

TCP SYN (p0f)

fingerprintco-occurrences
6:51+13:0:8440:mss*7,0:mss,sok,ts:flow:0756
6:48+16:0:8440:mss*7,0:mss,sok,ts:flow:0600
6:52+12:0:8440:mss*7,0:mss,sok,ts:flow:0241
6:53+11:0:8440:mss*7,0:mss,sok,ts:flow:0120
6:54+10:0:8440:mss*7,0:mss,sok,ts:flow:069
6:49+15:0:8440:mss*7,0:mss,sok,ts:flow:055
6:47+17:0:8440:mss*7,0:mss,sok,ts:flow:048
6:46+18:0:8440:mss*7,0:mss,sok,ts:flow:08
6:50+14:0:8440:mss*7,0:mss,sok,ts:flow:02

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 13_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.361899

Country

fingerprintco-occurrences
US · United States1899

Network (ASN)

fingerprintco-occurrences
AS63949 · Akamai Connected Cloud1899