TCP SYN (p0f)

4:48+16:0:1412:65535,10:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-22 13:53 · last seen 2026-09-05 07:20 · 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 TTL48+16
Options length0
MSS1412
Window size65535
Window scale10
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_58ed7828516f8
t13d1515h1_8daaf6152771_de4a06bb82e32
t13d1515h1_8daaf6152771_0a20fe35d3a51

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.8
ge11nn13enus_9db22d02e17a_000000000000_0000000000003

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1412_1011

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 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 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Brave Chrome/79.0.3945.88 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.361
Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Brave Chrome/86.0.4240.111 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Brave Chrome/84.0.4147.135 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.123 Safari/537.361
Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.107 Safari/537.361

Country

fingerprintco-occurrences
PK · Pakistan6
MU · Mauritius3
EG · Egypt1
SN · Senegal1

Network (ASN)

fingerprintco-occurrences
AS23889 · Mauritius Telecom Ltd3
AS8452 · TE-AS1
AS23674 · Nayatel (Pvt) Ltd1
AS141342 · FIBERISH (PVT) LTD1
AS37649 · SAGA AFRICA HOLDINGS LIMITED1
AS141361 · Bliss Communication Network (Pvt) Ltd1
AS136384 · Optix Pakistan (Pvt.) Limited1
AS147302 · FALCON BROADBAND (PRIVATE) LIMITED1
AS140210 · ConnectX1