TCP SYN (JA4T)

64240_2-4-8_1460_00

first seen 2026-06-30 19:44 · last seen 2026-09-16 07:54 · JSON

Last 7 days (25 observations)

Distinct clients per day (last 30 days, peak 7/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 window64240
Option kinds2-4-8
MSS1460
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_e51b7354d87f235
t13d751100_479067518aa3_d41ae481755e4

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr040000_e1d2031bdfea_000000000000_000000000000235
po11nn090000_4d3d8809f05c_000000000000_0000000000001
he11nn080000_ee272586b522_000000000000_0000000000001
he11nn080000_5007db124bf6_000000000000_0000000000001
po11nn090000_38493e555996_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:53+11:0:1460:mss*44,0:mss,sok,ts:df,id+:093
4:49+15:0:1460:mss*44,0:mss,sok,ts:df,id+:057
4:50+14:0:1460:mss*44,0:mss,sok,ts:df,id+:047
4:51+13:0:1460:mss*44,0:mss,sok,ts:df,id+:033
4:56+8:0:1460:mss*44,0:mss,sok,ts:df,id+:07
4:48+16:0:1460:mss*44,0:mss,sok,ts:df,id+:01
4:52+12:0:1460:mss*44,0:mss,sok,ts:df,id+:01

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/537.36235
AnyConnect Darwin_i386 3.1.051604

Country

fingerprintco-occurrences
US · United States239

Network (ASN)

fingerprintco-occurrences
AS63949 · Akamai Connected Cloud239