TCP SYN (p0f)

4:43+21:0:1460:65535,8:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-17 08:04 · last seen 2026-09-15 06:16 · JSON

Last 7 days (5 observations)

Distinct clients per day (last 30 days, peak 5/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 TTL43+21
Options length0
MSS1460
Window size65535
Window scale8
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_58ed7828516f20
t13d1515h1_8daaf6152771_0a20fe35d3a516
t13d1515h1_8daaf6152771_de4a06bb82e310
t13d1516h1_8daaf6152771_1a63afa7c4784

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_00000000000022
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.20
ge11nn14enus_4a2973d235de_000000000000_0000000000008

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1460_850

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.366
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.364
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.362

Country

fingerprintco-occurrences
US · United States7
PY · Paraguay4
MX · Mexico4
NG · Nigeria4
HN · Honduras4
GB · United Kingdom2
RU · Russia2
TT · Trinidad & Tobago2
AR · Argentina2
KE · Kenya2

Network (ASN)

fingerprintco-occurrences
AS14593 · Space Exploration Technologies Corporation5
AS23201 · Telecel S.A.4
AS7303 · Telecom Argentina S.A.2
AS273054 · TELEVISION POR CABLE VIA SATELITE CABLE YOJOA TV, SOCIEDAD DE RESPONSABILIDAD LIMITADA2
AS40749 · CLARKSVILLE DEPARTMENT OF ELECTRICITY2
AS25513 · PJSC Moscow city telephone network1
AS7922 · Comcast Cable Communications, LLC1
AS15830 · Equinix (EMEA) Acquisition Enterprises B.V.1
AS18403 · FPT Telecom Company1
AS8167 · V tal1