TCP SYN (p0f)

4:54+10:0:1460:62727,8:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-11 23:07 · last seen 2026-06-17 10:23 · JSON

Decomposed attributes

IP version4
Initial TTL54+10
Options length0
MSS1460
Window size62727
Window scale8
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.2

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr13enus_82d96efe40c3_000000000000_0000000000002

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144;47626:581226723|15663105|1:1:0:220|m,a,s,p1
1:65536;2:0;4:6291456;6:262144;10906:220130183|15663105|1:1:0:220|m,a,s,p1

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/129.0.0.0 Safari/537.362

Country

fingerprintco-occurrences
US · United States2

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.2

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_653d80c3fe9d2