TCP SYN (JA4T)

65535_2-1-3-1-1-8-4-0-0_1255_6

first seen 2026-07-02 06:58 · last seen 2026-07-02 06:58 · JSON

Decomposed attributes

TCP window65535
Option kinds2-1-3-1-1-8-4-0-0
MSS1255
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
t13d2013h2_a09f3c656075_7f0f34a4126d Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.4, safari 26.6.2, +2 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn05enin_3f99bc624e90_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:2097152;3:100;9:1|10485760|0|m,s,p,a1

TCP SYN (p0f)

fingerprintco-occurrences
6:51+13:0:1255:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:ecn,flow:01

User-Agent

fingerprintco-occurrences
HackerNews/1566 CFNetwork/3860.100.1 Darwin/25.0.01

Country

fingerprintco-occurrences
IN · India1

Network (ASN)

fingerprintco-occurrences
AS45609 · Bharti Airtel Ltd. AS for GPRS Service1