TCP SYN (p0f)

4:110+18:0:1460:mss*29,13:mss,nop,nop,sok,nop,ws:df,id+:0

first seen 2026-09-21 13:48 · last seen 2026-09-21 13:48 · JSON

Decomposed attributes

IP version4
Initial TTL110+18
Options length0
MSS1460
Window sizemss*29
Window scale13
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
t13d1717h2_5b57614c22b0_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 148.0.2, firefox 144.0.2, firefox 142.0.1, +6 more.The fingerprint page shows the full measured match list. More on the catalog.2

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn13fr00_1da09922fa5e_000000000000_0000000000001
ge20nn12fr00_c05a64b9078b_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:22|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 155.0.1, +31 more.The fingerprint page shows the full measured match list. More on the catalog.1
1:65536;2:0;4:131072;5:16384|12517377|5:0:0:42|m,p,a,s1

TCP SYN (JA4T)

fingerprintco-occurrences
42340_2-1-1-4-1-3_1460_132

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.02

Country

fingerprintco-occurrences
FI · Finland2

Network (ASN)

fingerprintco-occurrences
AS59651 · AS QualityNetwork2