TCP SYN (JA4T)

64800_2-1-3-1-1-4_1392_8

first seen 2026-08-06 08:12 · last seen 2026-08-25 06:08 · 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 window64800
Option kinds2-1-3-1-1-4
MSS1392
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
t12d190800_d83cc789557e_7af1ed941c261
t13d1312h2_f57a46bbacb6_ab7e3b40a677 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.8, go-net/http 1.26.7, +5 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
po11nn07enid_7d361e250c48_000000000000_0000000000001
ge20nn13enus_21630b3f9490_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:4194304;5:16384;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.8, go-net/http 1.26.7, +6 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
6:47+17:0:1392:mss*45,8:mss,nop,ws,nop,nop,sok:flow:01
6:46+18:0:1392:mss*45,8:mss,nop,ws,nop,nop,sok:flow:01

User-Agent

fingerprintco-occurrences
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
Jetpack/12.0; WordPress/6.1; http://site62653127.com1

Country

fingerprintco-occurrences
BR · Brazil1
ID · Indonesia1

Network (ASN)

fingerprintco-occurrences
AS8167 · V tal1
AS63859 · PT. Eka Mas Republik1