TCP SYN (p0f)

4:52+12:0:1420:mss*44,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-23 19:21 · last seen 2026-09-01 06:56 · JSON

Distinct clients per day (last 30 days, peak 2/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 TTL52+12
Options length0
MSS1420
Window sizemss*44
Window scale7
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
t13d4412h1_fd39b124ee10_58ed7828516f5
t13d1515h1_8daaf6152771_de4a06bb82e33

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.5
ge11nn13enus_9db22d02e17a_000000000000_0000000000003

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1420_78

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.361
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.361
Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2224.3 Safari/537.361
Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.819 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.361

Country

fingerprintco-occurrences
MX · Mexico2
CI · Côte d’Ivoire2
DE · Germany1
BR · Brazil1
PL · Poland1
AM · Armenia1

Network (ASN)

fingerprintco-occurrences
AS29571 · Orange Côte d'Ivoire2
AS265594 · Television Internacional, S.A. de C.V.2
AS9141 · P4 Sp. z o.o.1
AS3209 · Vodafone GmbH1
AS28343 · UNIFIQUE TELECOMUNICACOES S/A1
AS49800 · GNC-Alfa CJSC1