TCP SYN (p0f)

4:43+21:0:1460:mss*29,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-09-20 18:07 · last seen 2026-09-20 18:07 · JSON

Decomposed attributes

IP version4
Initial TTL43+21
Options length0
MSS1460
Window sizemss*29
Window scale7
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
t13d1313h2_f57a46bbacb6_9249cab70c771

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr020000_fb4f949fd323_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p1

TCP SYN (JA4T)

fingerprintco-occurrences
42340_2-4-8-1-3_1460_71

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_2 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Version/7.0 Mobile Safari/537.36 (compatible; Bytespider; https://bytedance.sg.larkoffice.com/docx/K5bxdypulop3IIxrJb0lOjLVgFe)1

Country

fingerprintco-occurrences
SG · Singapore1

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.1