TCP SYN (p0f)

4:51+13:0:1460:mss*44,11:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-13 09:24 · last seen 2026-06-18 11:03 · JSON

Decomposed attributes

IP version4
Initial TTL51+13
Options length0
MSS1460
Window sizemss*44
Window scale11
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
t13d311000_8ae6a2f5ac15_5ac7197df9d230

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_c3abebcf3d28_000000000000_00000000000030

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; SemrushBot/7~bl; +http://www.semrush.com/bot.html)30

Country

fingerprintco-occurrences
US · United States30

Network (ASN)

fingerprintco-occurrences
AS209366 · SEMrush CY LTD30