TCP SYN (p0f)

4:47+17:0:1360:mss*44,9:mss,nop,nop,sok,nop,ws:df,id+:0

first seen 2026-07-07 12:52 · last seen 2026-07-07 12:52 · JSON

Decomposed attributes

IP version4
Initial TTL47+17
Options length0
MSS1360
Window sizemss*44
Window scale9
Options layoutmss,nop,nop,sok,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
t13d1617h2_86a278354501_3e9721a6796e1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr13enus_dee81a311bfc_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:42|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 152.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-1-4-1-3_1360_91

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.01

Country

fingerprintco-occurrences
IE · Ireland1

Network (ASN)

fingerprintco-occurrences
AS9009 · M247 Europe SRL1