TCP SYN (p0f)

4:73+?:0:1380:65535,8:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-13 08:49 · last seen 2026-06-21 19:43 · JSON

Decomposed attributes

IP version4
Initial TTL73+?
Options length0
MSS1380
Window size65535
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
t13d2212h1_3522af84f765_8d633dac71241
t13d3111h2_e8f1e7e78f70_5ac7197df9d21

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_6381de1c7315_000000000000_0000000000001
ge20nn040000_8ab5aeda5c38_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:4096;2:0;5:16384;6:131072;3:100;4:65536|26148865|0|m,s,p,a1

User-Agent

fingerprintco-occurrences
facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)2

Country

fingerprintco-occurrences
US · United States2

Network (ASN)

fingerprintco-occurrences
AS32934 · Facebook, Inc.2