TCP SYN (p0f)

4:44+20:0:1440:mss*44,9:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-14 13:20 · last seen 2026-07-31 12:44 · JSON

Decomposed attributes

IP version4
Initial TTL44+20
Options length0
MSS1440
Window sizemss*44
Window scale9
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
t13d1812h1_85036bcba153_d41ae481755e3

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn05enus_16a7191cb35b_000000000000_0000000000002
ge11nn040000_e1d2031bdfea_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1440_93

User-Agent

fingerprintco-occurrences
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; AzureAI-SearchBot/1.0;3

Country

fingerprintco-occurrences
US · United States3

Network (ASN)

fingerprintco-occurrences
AS8075 · Microsoft Corporation3