TCP SYN (p0f)

4:54+10:0:1410:mss*30,13:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-29 23:16 · last seen 2026-06-29 23:16 · JSON

Decomposed attributes

IP version4
Initial TTL54+10
Options length0
MSS1410
Window sizemss*30
Window scale13
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_02713d6af862 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 134.0.6998.35, chromium 133.0.6943.16.The fingerprint page shows the full measured match list. More on the catalog.3

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr080000_0f371c09b546_000000000000_0000000000002
ge20nn100000_6fa0b34dd562_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144|15663105|7:1:0:220|m,a,s,p1
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
1:65536;2:0;4:6291456;6:262144|15663105|9:1:7:220|m,a,s,p1

TCP SYN (JA4T)

fingerprintco-occurrences
42300_2-4-8-1-3_1410_133

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.363

Country

fingerprintco-occurrences
NL · Netherlands3

Network (ASN)

fingerprintco-occurrences
AS202425 · IP Volume inc3

Cross-transport links

TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).

fingerprintlinked observations
q13d0311h3_55b375c5d22e_5a1f323ef56d2