TCP SYN (p0f)

6:46+18:0:1220:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:flow:0

first seen 2026-07-18 07:25 · last seen 2026-07-18 07:25 · JSON

Decomposed attributes

IP version6
Initial TTL46+18
Options length0
MSS1220
Window size65535
Window scale6
Options layoutmss,nop,ws,nop,nop,ts,sok,eol+1
Quirksflow
Payload class0

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
ge20nn05itit_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 (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-8-4-0-0_1220_61

User-Agent

fingerprintco-occurrences
feeeed/37 CFNetwork/3860.300.31 Darwin/25.2.01

Country

fingerprintco-occurrences
IT · Italy1

Network (ASN)

fingerprintco-occurrences
AS12874 · Fastweb SpA1