TCP SYN (p0f)

6:48+16:0:1440:mss*45,11:mss,sok,ts,nop,ws:flow:0

first seen 2026-07-01 18:29 · last seen 2026-07-01 18:29 · JSON

Decomposed attributes

IP version6
Initial TTL48+16
Options length0
MSS1440
Window sizemss*45
Window scale11
Options layoutmss,sok,ts,nop,ws
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
t13d1715h2_5b57614c22b0_a54fffd0eb611

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn13enus_7e820a765fe5_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:42|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 152.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (JA4T)

fingerprintco-occurrences
64800_2-4-8-1-3_1440_111

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:140.0) Gecko/20100101 Firefox/140.01

Country

fingerprintco-occurrences
NO · Norway1

Network (ASN)

fingerprintco-occurrences
AS56655 · Gigahost AS1