TCP SYN (JA4T)

65535_2-1-3-1-1-8-4-0-0_1370_6

first seen 2026-07-29 15:00 · last seen 2026-09-28 13:39 · JSON

Decomposed attributes

TCP window65535
Option kinds2-1-3-1-1-8-4-0-0
MSS1370
Window scale6

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
t13d1813h1_85036bcba153_8d4036f0cf4a2
t13d3112h2_e8f1e7e78f70_b26ce05bbdd6 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.5.0, php-curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_be0d0b335e46_000000000000_0000000000002
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.13.0, +11 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP/2 frames (Akamai)

fingerprintco-occurrences
3:100;4:33554432;2:0|33488897|0|m,p,s,a Match?Exact match in Thumbprint's published controlled catalog captures: php-curl 7.88.1, curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
6:46+18:0:1370:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:flow:02
6:54+10:0:1370:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:flow:01

User-Agent

fingerprintco-occurrences
StartupRadarBot/0.1 (research; krbl1985@gmail.com)2
curl/7.88.11

Country

fingerprintco-occurrences
US · United States2
RU · Russia1

Network (ASN)

fingerprintco-occurrences
AS7018 · AT&T Enterprises, LLC2
AS12389 · PJSC Rostelecom1