TCP SYN (p0f)

4:52+12:0:1400:65535,9:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-30 14:51 · last seen 2026-09-04 20:45 · 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 TTL52+12
Options length0
MSS1400
Window size65535
Window scale9
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_de4a06bb82e32
t13d1714h1_ab0a1bf427ad_5ae85263eb3b1

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_0000000000002
ge11nn040000_5b1e8b5f4d2d_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1400_98

User-Agent

fingerprintco-occurrences
Mozilla/5.01
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.84 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 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 (Macintosh; Intel Mac OS X 11_1_0) AppleWebKit/537.36 (KHTML, like Gecko) Brave Chrome/87.0.4280.67 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.106 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.127 Safari/537.361

Country

fingerprintco-occurrences
QA · Qatar2
TN · Tunisia2
TR · Turkey1
IT · Italy1
MA · Morocco1
ET · Ethiopia1

Network (ASN)

fingerprintco-occurrences
AS8781 · Ooredoo Q.S.C.2
AS36884 · Wana Corporate1
AS24757 · Ethio Telecom1
AS2609 · Tunisia BackBone AS1
AS8612 · Smeraldo S.p.A.1
AS34296 · Millenicom Telekomunikasyon Hizmetleri Anonim Sirketi1
AS5438 · Agence Tunisienne d'Internet1