TCP SYN (p0f)

6:39+25:0:1440:mss*30,11:mss,sok,ts,nop,ws:flow:0

first seen 2026-10-30 09:54 · last seen 2026-10-30 09:54 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 1/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

IP version6
Initial TTL39+25
Options length0
MSS1440
Window sizemss*30
Window scale11
Options layoutmss,sok,ts,nop,ws
Quirksflow
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
t13d5212h1_b262b3658495_8e6e362c5eac Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.21.0, node-fetch 24.19.0, node-fetch 22.23.1, +8 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn07en00_131b6413da1e_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
43200_2-4-8-1-3_1440_111

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; nomoat-seed/0.1; +https://nomoat.app)1

Country

fingerprintco-occurrences
AT · Austria1

Network (ASN)

fingerprintco-occurrences
AS197540 · netcup GmbH1

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,001e,0018,0019,0100,0101 Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.22.1, python-httpx 0.28.1, python-requests 2.34.2, +2 more.The fingerprint page shows the full measured match list. More on the catalog.1