TCP SYN (p0f)

4:43+21:0:1440:mss*5,3:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-09 09:58 · last seen 2026-07-09 09:58 · JSON

Decomposed attributes

IP version4
Initial TTL43+21
Options length0
MSS1440
Window sizemss*5
Window scale3
Options layoutmss,sok,ts,nop,ws
Quirksdf,id+
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
t13d1516h2_8daaf6152771_d8a2da3f94cd Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn14enus_9b3a7e4e216b_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +43 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (JA4T)

fingerprintco-occurrences
7300_2-4-8-1-3_1440_31

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
ZA · South Africa1

Network (ASN)

fingerprintco-occurrences
AS328471 · HERO TELECOMS (PTY) LTD1