TCP SYN (p0f)

4:117+11:0:1460:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-06-22 08:23 · last seen 2026-08-28 03:31 · JSON

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 version4
Initial TTL117+11
Options length0
MSS1460
Window size65535
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
Quirksdf,id+,ecn
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_d41ae481755e4

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_88d30a62b7ad_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.25.0.The fingerprint page shows the full measured match list. More on the catalog.2
ge11nn07enus_1602cc5cc04c_000000000000_0000000000001
ge11nn050000_444220f7ef68_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1460_82

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.361
Mozilla/5.0 (X11; Debian; Linux x86_64; rv:145.0) Gecko/20100101 Firefox/145.01
Python/3.13 aiohttp/3.14.31

Country

fingerprintco-occurrences
PL · Poland2
FR · France1
IN · India1

Network (ASN)

fingerprintco-occurrences
AS210558 · 1337 Services GmbH2
AS51167 · Contabo GmbH1
AS31898 · Oracle Corporation1